journalArticle Article A1 Giulia Rando aut author Silvia Sfameni aut author Jozefien Geltmeyer aut author 0000-0002-1281-2968 Alessandra Palella aut author Lorenzo Spadaro aut author Alberto Riminucci aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Maria Rosaria Plutino aut author eng This study explores the use of Spanish broom (Spartium junceum) to develop electrospun composite membranes, showcasing the potential of renewable plant waste for producing eco‐friendly, high‐value materials for innovative gravity‐driven water purification. In this sustainable approach, first of all, microcrystalline cellulose and biochar were successfully obtained from this natural source and functionalized using an easy, eco‐friendly, and one‐step synthesis by employing proper precursors and nanomaterials, that is, (3‐mercaptopropyl)trimethoxysilane, (3‐glycidyloxypropyl)trimethoxysilane, citric acid, β‐Cyclodextrins, and halloysite nanotubes, to prepare green, hybrid, and cross‐linked systems featuring tailored properties. The obtained derivatives were characterized and employed for the further development of eco‐friendly and sustainable poly(vinyl alcohol) nanofiber composites through the electrospinning technique on nonwoven glass microfiber support. After thermal treatment, the membranes displayed enhanced mechanical tensile properties and were tested in a dead‐end filtration cell for the removal of a methylene blue and methyl orange mixed solution, in particular demonstrating high retention and separation performances toward the cationic methylene blue dye. Among all, the PVA@MCC_GPTMS_HNT and PVA@MCC membranes achieved methylene blue retention rates of 93.4% and 79.9%, methylene blue/methyl orange separation efficiencies of 93.5% and 82.1%, and fluxes of 133.7 and 501.7 L m^−2  h^−1, respectively. Moreover, a biochar‐supported nano zero‐valent iron composite was obtained and tested for the removal of MB in batch experiments. The Langmuir adsorption isotherm model better describes its sorption behavior with a maximum sorption capacity of 305.65 mg g^1. Technology and Engineering biochar cyclodextrins electrospun nanofiber halloysite microcrystalline cellulose water filtration POLY(VINYL ALCOHOL) PVA METHYLENE-BLUE MICROCRYSTALLINE CELLULOSE REMOVAL ADSORPTION BIOCHAR NANOCRYSTALS KINETICS DYES NANOPARTICLES http://hdl.handle.net/1854/LU-01KMFZPAJRCBT6C4PPHQC68C4J 10.1002/eem2.70321 001718555100001 2575-0356 e70321 20 p.

2026 2575-0356 2026 2026 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) inpress https://biblio.ugent.be/publication/01KMFZPAJRCBT6C4PPHQC68C4J/file/01KMG00W15HB55PGPYZ6J4Q8SY application/pdf https://biblio.ugent.be/publication/01KMFZPAJRCBT6C4PPHQC68C4J/file/01KMG029HD8FFH16RH2HBRSKA5 application/pdf private ug 01KMFZPAJRCBT6C4PPHQC68C4J 2026-03-24T13:14:07Z 2026-03-31T05:35:24Z A1 VABB-1 journalArticle Article A1 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Muluneh G. Abebe aut author Jozefien Geltmeyer aut author 0000-0002-1281-2968 Timo Meireman aut author Özlem İpek Kalaoglu Altan aut author Joachim Van Guyse aut author Eric Khousakoun aut author Hayriye Gidik aut author Elham Mohsenzadeh aut author Driss Lahem aut author Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Björn Maes aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Smart textiles that passively regulate thermal comfort provide a sustainable alternative to energy-intensive climate control. A promising strategy involves modulating radiative heat transfer by dynamically adjusting surface emissivity, thereby facilitating reversible switching between heat-retentive and heat-dissipative states. Existing systems enable emissivity switching but often need external energy or lack dimensional stability when deformed, which limits wearable applications. Here, a fully passive, autonomously adaptive dynamic emissivity switch textile (DEST) based on a thermo- and humidity-responsive electrospun poly(N-isopropyl acrylamide) (PNIPAM) copolymer is introduced. To ensure robust functionality in humid or aqueous environments, a crosslinkable allyl-functionalized PNIPAM copolymer is synthesized via post-polymerization amidation of a P(NIPAM-co-methyl acrylate) copolymer and processed using a green water-ethanol-based electrospinning technique. Thiol-ene crosslinking produced water-stable, thermoresponsive nanofibers with a transition near skin temperature. For reversible macropore actuation, a dimensionally stable architecture is employed that avoids out-of-plane distortion, achieved through a honeycomb-shaped electrospinning collector and a tailored mechanical cutting pattern. A silver coating imparts the overall infrared (IR) reflectivity, facilitating radiative heat retention when the macropores are closed. The resulting DEST exhibits dual responsiveness to temperature and ambient humidity, enabling passive switching between emissive and reflective states without external energy input, with a approximate to 6 degrees C reversible thermal comfort window. Chemistry COATINGS RESISTANCE MEMBRANES IMPACT electrospinning emissivity metamaterial design shape-memory polymer thermoregulation http://hdl.handle.net/1854/LU-01KG1VVEYGZMCCKJN5MG894RH4 10.1002/adma.202517161 001619946100001 0935-9648 1521-4095 e17161 15 p. 2026 0935-9648 1521-4095 2026 38 22 2026 No license (in copyright) published https://biblio.ugent.be/publication/01KG1VVEYGZMCCKJN5MG894RH4/file/01KG1Z1NEXFMZ6QKM8E4M9NQ7E application/pdf private https://biblio.ugent.be/publication/01KG1VVEYGZMCCKJN5MG894RH4/file/01KHBS1P6DT04DH3CTV4NR7X4A application/pdf https://biblio.ugent.be/publication/01KG1VVEYGZMCCKJN5MG894RH4/file/01KPQMCFECWSC1M9NZQ1GDMBDV application/pdf restricted ug 01KG1VVEYGZMCCKJN5MG894RH4 2026-01-28T08:34:51Z 2026-04-22T00:00:14Z A1 VABB-1 journalArticle Article A1 Jessica Leigh Dobson aut author ug_WE11 Frane Babarović aut author ug_WE11 Wanjie Xie aut author ug_WE11 Michaël Nicolaï aut author ug_WE11 0000-0002-9570-0311 Gerben Debruyn aut author ug_WE11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Matthew Shawkey aut author ug_WE11 0000-0002-5131-8209 Liliana D'Alba Altamirano aut author ug_WE11 0000-0002-2478-3455 eng Melanin pigments are ubiquitous and serve diverse functions, including UV protection and colour production. In vertebrates, they are housed in organelles called melanosomes that typically vary in shape from spherical to rod-like, but can also adopt unusual morphologies, such as flatness or hollowness. For over 50 years, it was thought that melanosome hollowness occurred only in birds and always alongside elongation, where hollow rods or platelets form organized nanostructures that produce brilliant iridescent colours. Here, we present the first description of hollow, spherical melanosomes in mammals, from the hairs of the platypus (Monotremata: Ornithorhynchus anatinus). By contrast, we found no evidence of hollow melanosomes in the other two monotreme genera or in any other mammal so far examined (from a combined dataset of 126 species encompassing 103 genera). These spherical, hollow platypus melanosomes are unique among vertebrates and, surprisingly, only produce brown coloration, suggesting a potential function unrelated to colour or a non-adaptive origin. This finding provides exciting new avenues of research into mammal melanogenesis and the evolution of melanosomes. Biology and Life Sciences melanin hollow melanosomes mammal coloration platypus hair nanostructure EVOLUTION MELANIN PATTERNS http://hdl.handle.net/1854/LU-01KMZG561X37GQ17AX82D5SX3H 10.1098/rsbl.2025.0721 001716645900001 1744-9561 1744-957X 20250721 7 p. 2026 1744-9561 1744-957X 2026 22 3 2026 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01KMZG561X37GQ17AX82D5SX3H/file/01KMZG8CQ34M8W2ZC27TTQWPVM application/pdf ug 01KMZG561X37GQ17AX82D5SX3H 2026-03-30T13:50:27Z 2026-04-03T07:58:16Z A1 VABB-1 journalArticle Article A1 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Bianca Swanckaert aut author 0000-0001-6036-6512 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Efficient alcohol/water separation is crucial for industrial processes such as process intensification in CO2 hydrogenation but remains challenging due to the strong intermolecular interactions and miscibility between both components. Here, we show that temperature-resistant, stable hydrophobic organosilica nanofiber membranes combined with salting-out enable gravity-driven liquid-liquid separation without external pressure or energy input. We develop a fast pre-functionalization method by sol-gel synthesis of tetraethoxy silane (TEOS) with dimethyldiethoxy silane (DMDES), and compare the performance with a TEOS-based membrane post-functionalized with chloro-octyldimethylsilane (Cl-OdMS). Both membranes show long-term hydrophobic stability (water contact angle >110° for over three months when submerged in water) and robustness against high temperature and alkaline conditions. The membranes act as phase separators that reproduce equilibrium binodal compositions, rather than selective barriers. By exploiting the salting-out effect, the immiscibility window of alcohol/water mixtures was expanded, enabling separation even for fully miscible ethanol/water systems, with K2CO3 the most effective salt. Approximately 97% of added salt remained in the water-rich phase. Separation is also successful for ternary water/ethanol/alcohol mixtures, allowing construction of binodal solubility curves. This work demonstrates an energy-efficient, chemically and thermally robust membrane-based approach for alcohol/water separation in chemical processes. Technology and Engineering Chemistry Organosilica nanofiber membranes Functionalized membranes (ternary) alcohol/water separation Wettability Salting-out SALTING-OUT WATER OIL/WATER SILICA WETTABILITY POLYMERIZATION EXTRACTION MECHANISM SOLVENTS RECOVERY http://hdl.handle.net/1854/LU-01KAK0QTRC86HRW240M0K5SZN2 10.1016/j.seppur.2025.136093 001622964500001 1383-5866 1873-3794 136093 12 p. 2026 1383-5866 1873-3794 2026 382 5 2026 No license (in copyright) published https://biblio.ugent.be/publication/01KAK0QTRC86HRW240M0K5SZN2/file/01KCTYQB0XRZ0PDTBFPV2BJPH5 application/pdf https://biblio.ugent.be/publication/01KAK0QTRC86HRW240M0K5SZN2/file/01KCTYR4WEWMF6FC2N3S4J1W9H application/pdf restricted https://biblio.ugent.be/publication/01KAK0QTRC86HRW240M0K5SZN2/file/01KCTYRCY2YECABAWYMV7TBBNE application/pdf ug 01KAK0QTRC86HRW240M0K5SZN2 2025-11-21T10:53:10Z 2026-05-18T00:00:37Z A1 VABB-1 journalArticle Article A1 Gilles Van Eygen aut author Stijn Keuppens aut author Xander De Breuck aut author Bianca Swanckaert aut author 0000-0001-6036-6512 Patrik Boura aut author Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Juraj Kosek aut author Deepika Ramasamy aut author Fady Nahra aut author ug_WE06 0000-0002-1115-9725 Anita Buekenhoudt aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Bart Van der Bruggen aut author Patricia Luis aut author eng This study investigates the synthesis and performance of polymeric membranes for their potential application in supported liquid membranes (SLM), using the extraction of -methylbenzylamine (MBA), 1-methyl-3-phenylpropylamine (MPPA), and isopropyl amine (IPA) as a reference. Three synthesis methods — phase inversion, electrospinning, and stretching — were evaluated, each impacting the membrane morphology differently. The polymer selection influenced porosity, wettability, and surface free energy with PTFE exhibiting the highest hydrophobicity. Membrane wettability was assessed using the ionic liquid [P6,6,6,14][N(Tf)2] as the selective extractant, revealing that larger pore sizes enhanced the impregnation efficiency, while reducing the final SLM stability. Solute fluxes and selectivity were quantified; electrospun membranes exhibited higher fluxes, ranging from 1.0 to 1.2 g/(m2h) for MBA, 2.1 to 2.2 g/(m2h) for MPPA, and 0.8 to 1.2 g/(m2h) for IPA, along with a higher selectivity compared to phase inversion membranes, with fluxes ranging from 0.2 to 0.3 g/(m2h) for MBA, 0.2 g/(m2h) for MPPA, and 0.3 to 0.4 g/(m2h) for IPA. Stretched membranes demonstrated a comparable selectivity (MBA/IPA = 2.2, MPPA/IPA = 3.9), but reduced fluxes with increasing pore size, decreasing from 2.7 to 0.5 g/(m2h) for MBA, 4.9 to 0.9 g/(m2h) for MPPA, and 1.2 to 0.3 g/(m2h) for IPA, as the nominal pore size increased from 50 to 450 nm. This phenomenon likely resulted from the improved impregnation efficiency, coupled with a lower porosity and larger thickness in the membranes with larger pores. Overall, the membrane morphology significantly influenced the SLM performance and stability, with homogeneous, porous membranes possessing smaller pore sizes and high hydrophobicity exhibiting optimal characteristics. These findings underscore the critical role of membrane structure and properties in SLM applications. Technology and Engineering Polymers Supported liquid membranes Extraction technology IONIC LIQUID SEPARATION STABILITY http://hdl.handle.net/1854/LU-01HZEYNB2HRCKDYC2R1AR7QSJP 10.1016/j.seppur.2024.128192 001263491200001 1383-5866 1873-3794 128192 10 p. 2025 1383-5866 1873-3794 2025 352 2025 No license (in copyright) published https://biblio.ugent.be/publication/01HZEYNB2HRCKDYC2R1AR7QSJP/file/01HZEZ004MCSNDPSQWECJA4TDV application/pdf restricted https://biblio.ugent.be/publication/01HZEYNB2HRCKDYC2R1AR7QSJP/file/01HZH56HS807SKSQCKXT48JA1V application/pdf ug 01HZEYNB2HRCKDYC2R1AR7QSJP 2024-06-03T11:44:55Z 2026-03-31T14:48:31Z A1 VABB-1 journalArticle Article A1 Giulia Rando aut author Jozefien Geltmeyer aut author 0000-0002-1281-2968 Silvia Sfameni aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Maria Rosaria Plutino aut author eng Membrane-based approaches are an exciting alternative for the filtration and remediation of polluted water and for the removal of different traditional and emerging contaminants. This work focuses on the design and development of sustainable bio-polymeric blends based on polyamide 11 (PA11) employed to produce different Electrospun Nanofiber Membranes (ENMs) through the electrospinning process. Moreover, different eco-friendly functional nanofillers based on hybrid halloysite (HNT) derivatives were employed as dopant agents of the starting polymeric blends in a ratio of 1, 2 and 5 wt% of PA11 to achieve better mechanical and thermal features as well as retention performances of specific wastewater organic contaminants. Chemical-physical and structural-morphological characterizations, concerning all the nanofillers and the obtained sustainable membranes, are reported as well as the removal and separation studies of two selected anionic and cationic dyes, methyl orange (MO) and methylene blue (MB) in a dead-end filtration apparatus. The newly developed composite ENMs, compared to pristine PA11 ones, show good tensile mechanical and thermal properties, and increased MO and MB removal rates, modulated by the different HNT derivatives employed. Dead-end filtration experiments were performed using 1 and 3 layers of each type of ENM revealing, for 1-layer PA11 ENMs containing HNT modified with octadecylphosphonic acid and (3-aminopropyl)triethoxysilane (PA11@C18_HNT_NH2) and dimethyloctadecyl[3(trimethoxysilyl)propyl]ammoniumchloride (PA11@HNT_N + C18), a selectivity towards the removal of the cationic dye MB with a separation efficiency of 69.8 and 73.3 % respectively. Hence, 3-layer PA11 ENMs doped with HNT functionalized with (3-aminopropyl)triethoxysilane (PA11@HNT_NH2) display the highest retention rate for MO and MB respectively of 100 and 89.8 %. Technology and Engineering Hybrid nanomaterials Halloysite Sol-gel polyamide11 Electrospinning Filtration membranes Environmental remediation HALLOYSITE NANOTUBES NANOCOMPOSITES PROGRESS REMOVAL SOLVENT http://hdl.handle.net/1854/LU-01JSXVZBNGDM4GJ5XANRJESTKK 10.1016/j.susmat.2025.e01402 001482153600001 2214-9937 e01402 14 p. 2025 2214-9937 2025 44 2025 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/01JSXVZBNGDM4GJ5XANRJESTKK/file/01JSXX4GT1FAZX23WEN9CFCSE8 application/pdf ug 01JSXVZBNGDM4GJ5XANRJESTKK 2025-04-28T09:34:41Z 2026-03-31T05:15:46Z A1 VABB-1 conference C3 Yana Maudens aut author ug_TW11 0009-0004-7574-7309 Gerben Debruyn aut author ug_WE11 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Erica Savino aut author Cinzia Tonetti aut author Claudia Vineis aut author Alessio Varesano aut author Matthew Shawkey aut author ug_WE11 0000-0002-5131-8209 Liliana D'Alba Altamirano aut author ug_WE11 0000-0002-2478-3455 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 8th European Symposium on Electrohydrodynamic Atomization and Electrospinning 2025 eng Technology and Engineering http://hdl.handle.net/1854/LU-01JTFJMYP8FT6Z3R5G0RSM3RB0 2025 2025 13 13 2025 No license (in copyright) published https://biblio.ugent.be/publication/01JTFJMYP8FT6Z3R5G0RSM3RB0/file/01JTFK3ATANEW0G93SS8QT62X2 application/pdf restricted ug 01JTFJMYP8FT6Z3R5G0RSM3RB0 2025-05-05T06:38:03Z 2026-03-31T11:31:25Z C3 journalArticle Review A1 Mehrdad Seifali Abbasabadi aut author Brecht Tomme aut author ug_TW11 0000-0001-7765-3059 Bahman Goshayeshi aut author ug_TW11 0000-0001-8723-5045 Oleksii Mynko aut author ug_TW11 Yihan Wang aut author ug_TW11 0000-0003-1628-5736 Sangram Roy aut author ug_UGent Rohit Kumar Rohit Kumar aut author ug_UGent 0000-0002-9586-0542 Bhargav Baruah aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Steven De Meester aut author ug_LA24 0000-0002-5246-3918 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Kevin Van Geem aut author ug_TW11 0000-0003-4191-4960 eng The growing environmental impact of textile waste, fueled by the rapid rise in global fiber production, underscores the urgent need for sustainable end-of-life solutions. This review explores cutting-edge pathways for textile waste management, spotlighting innovations that reduce reliance on incineration and landfilling while driving material circularity. It highlights advancements in collection, sorting, and pretreatment technologies, as well as both established and emerging recycling methods. Smart collection systems utilizing tags and sensors show great promise in streamlining logistics by automating pick-up routes and transactions. For sorting, automated technologies like near-infrared and hyperspectral imaging lead the way in accurate and scalable fiber separation. Automated disassembly techniques are effective at removing problematic elements, though other pretreatments, such as color and finish removal, still need to be customized for specific waste streams. Mechanical fiber recycling is ideal for textiles with strong mechanical properties but has limitations, particularly with blended fabrics, and cannot be repeated endlessly. Polymer recycling—through melting or dissolving waste polymers—produces higher-quality recycled materials but comes with high energy and solvent demands. Chemical recycling, especially solvolysis and pyrolysis, excels at breaking down synthetic polymers like polyester, with the potential to yield virgin-quality monomers. Meanwhile, biological methods, though still in their infancy, show promise for recycling natural fibers like cotton and wool. When other methods are not viable, gasification can be used to convert waste into synthesis gas. The review concludes that the future of sustainable textile recycling hinges on integrating automated sorting systems and advancing solvent-based and chemical recycling technologies. These innovations, supported by eco-design principles, progressive policies, and industry collaboration, are essential to building a resilient, circular textile economy. Technology and Engineering textile waste end of life sustainability reuse mechanical recycling chemical recycling http://hdl.handle.net/1854/LU-01JYJZAKHK63JM8GSSH1WYG37F 10.3390/polym17050628 001442309100001 2073-4360 628 94 p. 2025 2073-4360 2025 17 5 2025 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01JYJZAKHK63JM8GSSH1WYG37F/file/01JYK02ADH0PVZKE6MWM9A0212 application/pdf ug 01JYJZAKHK63JM8GSSH1WYG37F 2025-06-25T07:20:06Z 2026-03-31T14:54:59Z A1 VABB-1 journalArticle Article A1 Yana Maudens aut author ug_TW11 0009-0004-7574-7309 Gerben Debruyn aut author ug_WE11 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Erica Savino aut author Cinzia Tonetti aut author Claudia Vineis aut author Alessio Varesano aut author Matthew Shawkey aut author ug_WE11 0000-0002-5131-8209 Liliana D'Alba Altamirano aut author ug_WE11 0000-0002-2478-3455 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Biomimicry, the replication of natural structures, is an emerging strategy in materials engineering for developing advanced functional materials. Reptile eggshells serve as compelling models for tunable bioinspired material design due to their diversity in forms and functions. This study presents a modular approach to designing keratin-based composites with customizable vapor sorption behavior. Inspired by reptile eggshells, four key biomimetic components were reconstructed: (1) electrospun keratin membranes resembling the fibrous shell membrane, (2) an egg protein matrix replicating the proteinaceous eggshell matrix, (3) calcium carbonate (CaCO3) particles introducing mineralization, and (4) a paraffin coating representing the lipid-rich cuticle layer. The modular accuracy of these biomimetic models was validated by comparison with representative reptile eggshells through Scanning Electron Microscopy analysis and Fourier-Transform Infrared Spectroscopy. Dynamic Vapor Sorption (DVS) analysis confirmed that varying the CaCO3 content allows precise control over the absorption profiles, ranging from low to high sorption values. Additionally, integrating the organic matrix and lipid coating enabled fine-tuning of the sorption properties. The resulting biomimetic composites exhibited sorption characteristics comparable to those of natural eggshells, including Caiman crocodilus (low absorption) and Pantherophis guttatus (high absorption), demonstrating the effectiveness of the modular design strategy. These findings establish a foundation for engineering advanced biocompatible materials with adaptable sorption behavior, offering potential applications in moisture-regulating wound dressings, tissue engineering scaffolds, sustainable packaging, and filtration systems. Technology and Engineering Modular biomimetic composites Protein nanofibers Keratin electrospinning Tunable vapor sorption Reptile eggshells CALCIUM-CARBONATE WATER RELATIONS CUTICLE NANOFIBERS ARAGONITE EXCHANGE LIZARD VAPOR http://hdl.handle.net/1854/LU-01JZHTVH49RDCBMYYFDVQK615P 10.1016/j.mtbio.2025.102032 001529217800001 2590-0064 102032 13 p. 2025 2590-0064 2025 33 2025 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/01JZHTVH49RDCBMYYFDVQK615P/file/01JZQ516RSFPM4E5GAASQRRBZ3 application/pdf ug 01JZHTVH49RDCBMYYFDVQK615P 2025-07-07T06:58:25Z 2026-03-31T05:21:05Z A1 VABB-1 journalArticle Article A1 Olivier Verschatse aut author 0000-0001-7732-6007 Mehdi Nikforooz aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 eng One of the important microscale properties that determine a composite's performance is the fiber-matrix interface strength. Research has primarily been focused on the interface strength under shear loading, while studies on interface strength under normal loading are limited. Nevertheless, normal loading is very relevant, for example to understand failure mechanisms in 90 degrees plies. Therefore, in this work, we modified a single fiber composite test to a cruciform shape with a thinned middle section to test glass fiber matrix interface properties under normal loading conditions. These specimens allow testing the interface up till the point of failure of the polymer matrix, thus improving over regular cruciform specimens. An in-house designed tensile stage enabled the use of in -situ transmission and reflection microscopy. Insights into the debonding process were obtained over a large fiber length (+/- 10 mm) via the use of a step-and-shoot method. The methodology is applied to a glass fiber with an epoxy compatible and incompatible sizing. It shows that the debonding process can be divided into two partially independent debonding processes (initiation and propagation). The obtained data enabled the construction of a descriptive function for the total debond length of a fiber-matrix interface. This showed that besides a high interface strength, a homogeneous application of the sizing should be aimed to decrease the chances of initiating debonding at lower stresses. Technology and Engineering Cruciform Fiber-matrix interaction Debonding Glass fiber POLYMER MATRIX PULL-OUT MECHANICAL-PROPERTIES EPOXY INTERFACE MICROBOND TEST STRENGTH TENSILE FRAGMENTATION STRESSES BEHAVIOR http://hdl.handle.net/1854/LU-01JS1WW95JRMG3FSS5TMFF9R9T 10.1016/j.compscitech.2025.111089 001425738300001 0266-3538 1879-1050 111089 12 p. 2025 0266-3538 1879-1050 2025 263 2025 No license (in copyright) published https://biblio.ugent.be/publication/01JS1WW95JRMG3FSS5TMFF9R9T/file/01JSHKJ973SSBAX2ED0GH44222 application/pdf https://biblio.ugent.be/publication/01JS1WW95JRMG3FSS5TMFF9R9T/file/01JT39AQCFFNBR7RKA5V25VHMD application/pdf restricted ug 01JS1WW95JRMG3FSS5TMFF9R9T 2025-04-17T12:51:45Z 2026-03-31T15:04:24Z A1 VABB-1 journalArticle Review A1 Donya Razzaghi aut author Milad Babazadeh-Mamaqani aut author Amin Babaie aut author Fatemeh Esmati aut author Hossein Roghani-Mamaqani aut author Mostafa Rezaei aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 eng Physical understanding and determination of different analytes without the need for advanced and additional equipment are highly important, which can be achieved by using stimuli-induced chromic materials. Physical and chemical incorporation of responsive chromophores into different polymers results in the fabrication of chromic polymers. Chromic electrospun nanofibers are prepared using the electrospinning technique, and their stimuli-responsivity is improved due to their high surface-to-volume ratio. This Perspective focuses on recent studies and developments on stimuli-induced chromic electrospun nanofibers. Within this Perspective, these nanofibers are divided into different classes of photochromic, thermochromic, electrochromic, mechanochromic, halochromic, solvatochromic, hydrochromic, and ionochromic according to the stimuli to which they respond. In addition, the preparation methods, chromic compounds, electrospinning conditions, response mechanisms, and different applications of chromic nanofibers will be discussed. The main applications of such chromic nanofibers are food packaging sensors, health monitoring sensors, anticounterfeiting materials, ink-free rewritable media, and smart clothing. Several new strategies are also proposed for different applications in future studies. The preparation of multiresponsive nanofibers that combine different chromic properties in a single system and also multifunctional nanofibers that merge stimuli-responsive chromic properties with other smart functionalities can be considered in the future. This Perspective aims to assist researchers and scientists in the preparation and development of new multifunctional chromic electrospun nanofibers for advanced applications, including multimode anticounterfeiting materials, multiresponsive sensors for food packaging, and shape memory-assisted dual-mode encryption of important data. Chemistry Smart materials Chromic polymers Electrospinning Chromic nanofibers Electrospun nanofibers Smart applications ELECTROCHROMIC PROPERTIES COLORIMETRIC SENSOR WO3 FIBERS FILMS MEMBRANES FABRICATION BEHAVIOR FACILE STRIPS http://hdl.handle.net/1854/LU-01JNZN61RAM5T1F38ZS3YXH2X6 10.1021/acsami.4c17105 001393335300001 1944-8244 1944-8252 2025 1944-8244 1944-8252 2025 17 3 4247 4289 2025 No license (in copyright) published https://biblio.ugent.be/publication/01JNZN61RAM5T1F38ZS3YXH2X6/file/01JNZQ2SN6QKKQSEGQZEM8RY0R application/pdf https://biblio.ugent.be/publication/01JNZN61RAM5T1F38ZS3YXH2X6/file/01JSKG7TQC1AR8KG05NB8BG6S6 application/pdf restricted ug 01JNZN61RAM5T1F38ZS3YXH2X6 2025-03-10T09:11:42Z 2026-03-31T15:04:32Z A1 VABB-1 journalArticle Article A1 Mehdi Nikforooz aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 eng Hydrothermal ageing can have different effects on the integrity of E-glass fibres and their sizing. In this study, the effect of hydrothermal ageing for different time periods was examined on the tensile strength of E-glass fibres and the interfacial properties of E-glass/epoxy in quasi-static and fatigue loading. For this purpose, single fibre tensile tests, single fibre fragmentation tests and single short fibre composite tests were performed. In particular, quasistatic and fatigue tests were conducted on innovative single short fibre composite specimens to capture the initiation and propagation of debonding cracks. Consequently, hydrothermal ageing had an insignificant effect on the interfacial strength of E-glass/epoxy, whereas it resulted in a detrimental impact on the mixed mode debonding propagation. In this regard, as the fibre off-axis angle approached 90 degrees, substantially longer debonding cracks were captured in aged E-glass/epoxy specimens compared to virgin E-glass/epoxy specimens in both quasi-static and fatigue loading. Technology and Engineering Polymer-matrix composites (PMCs) Debonding Optical microscopy physical methods of analysis Fractography CARBON-FIBER SINGLE-FIBER COMPOSITES STRENGTH DEGRADATION ADHESION WATER http://hdl.handle.net/1854/LU-01KDHZGMEZ1DCARCVJ2BPVHZB2 10.1016/j.compositesb.2025.112649 001502042700001 1359-8368 1879-1069 112649 13 p. 2025 1359-8368 1879-1069 2025 304 2025 No license (in copyright) published https://biblio.ugent.be/publication/01KDHZGMEZ1DCARCVJ2BPVHZB2/file/01KDJ0RPETEYDKWX39VBTY9A1B application/pdf https://biblio.ugent.be/publication/01KDHZGMEZ1DCARCVJ2BPVHZB2/file/01KF3PMJRTJXVSNJW9836APKJ7 application/pdf restricted ug 01KDHZGMEZ1DCARCVJ2BPVHZB2 2025-12-28T07:59:36Z 2026-03-31T15:22:41Z A1 VABB-1 journalArticle Article A1 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 David W. Collinson aut author Sarah A. Hesse aut author Christopher J. Takacs aut author Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Reinhold H. Dauskardt aut author eng Mesoporous silica thin films are candidates for next-generation dielectric materials due to their potential for control over their texture, high surface area, and good dielectric properties. Further, their dielectric response can potentially be further modified by infiltrating a second phase such as a polymer to produce thin film nanocomposite dielectrics. Despite their potential, uptake of mesoporous silica thin films has been hindered by difficulties in controlling the nanoscale structure and silica texture. We employ advanced characterization and kinetic Monte Carlo modeling to identify critical synthesis parameters governing the mesoporous silica texture. Different degrees of pore ordering can be achieved from quasi-random to highly ordered, eliminating the trial-and-error typically associated with achieving a targeted nanostructure. We then infiltrate semicrystalline poly(vinylidene fluoride) and polypropylene into the sub-10 nm pores to completely suppress the formation of crystalline domains in the polymers and produce nanocomposite dielectrics. Polypropylene nanocomposite dielectrics exhibit dielectric constants similar to 20% higher than silica and 125% greater than those of polypropylene. Poly(vinylidene fluoride) nanocomposites exhibit relaxor ferroelectric behavior. These dielectric materials are enabled by controlled, hierarchical design that spans the self-assembly of the silica matrix, tuning of the pore surface chemistry, and modification of the polymer conformations through the resulting quasi-3D nanoconfinement. We believe that these nanocomposites represent a powerful platform for the study of polymers under extreme levels of confinement, as well as a potential platform for next-generation dielectric materials. Technology and Engineering POLY(VINYLIDENE FLUORIDE) CONFINED CRYSTALLIZATION ISOTACTIC POLYPROPYLENE TEMPERATURE COPOLYMER NANOCOMPOSITES BETA PVDF INFILTRATION SPECTROSCOPY http://hdl.handle.net/1854/LU-01K2MMHARC7E2TCM7PQ45W3QXN 10.1021/acsnano.5c05114 001523136600001 1936-0851 1936-086X 2025 1936-0851 1936-086X 2025 19 27 25109 25121 2025 No license (in copyright) published https://biblio.ugent.be/publication/01K2MMHARC7E2TCM7PQ45W3QXN/file/01K2MMWCRH65FSHKQ91A1CPPGC application/vnd.openxmlformats-officedocument.wordprocessingml.document https://biblio.ugent.be/publication/01K2MMHARC7E2TCM7PQ45W3QXN/file/01K2MMXTV50X0F722WE17MC5N2 application/vnd.openxmlformats-officedocument.wordprocessingml.document https://biblio.ugent.be/publication/01K2MMHARC7E2TCM7PQ45W3QXN/file/01K3GRZW33A42GP9MKZNV8MDH6 application/pdf restricted ug 01K2MMHARC7E2TCM7PQ45W3QXN 2025-08-14T15:52:48Z 2026-03-31T15:19:14Z A1 VABB-1 conference C3 Alexis Spalletta aut author Nicolas Joly aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Sophie Dropsit aut author Isabelle Gosselin aut author Jonas Van Rie aut author Patrick Martin aut author XXIII B-MRS Meeting eng Technology and Engineering http://hdl.handle.net/1854/LU-01K9526C4KF9S3R5YABFB5YNV5 2 p. 2025 2025 2025 No license (in copyright) published https://biblio.ugent.be/publication/01K9526C4KF9S3R5YABFB5YNV5/file/01K952S7E505F607161B0T59W5 application/pdf https://www.eventweb.com.br/xxiiisbpmat/home-event/schedule.php?q=karen+de+clerck&area=todas&sessao=todas&tipo=todos%23trabalhos ug 01K9526C4KF9S3R5YABFB5YNV5 2025-11-03T14:33:31Z 2026-03-31T15:18:38Z C3 conference C3 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Alice Novello aut author ug_TW11 0009-0002-0113-7028 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Alessandro Trigilio aut author ug_TW11 0000-0001-8878-9947 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Faculty of Engineering and Architecture Research Symposium 2025 (FEARS 2025) eng Sol-gel chemistry offers powerful tools for engineering silica-based materials with tunable properties, including organosilica nanofiber membranes that are essential for applications such as chemical sensing, solvent separation, and electrochemical barriers. Despite their potential, the molecular factors that govern electrospinnability remain insufficiently understood. In particular, the complex relationship between hydrolysis kinetics, crosslinking dynamics, and rheological behavior often forces researchers to rely on empirical trial-and-error methods. To address this challenge, we developed a predictive framework for methyltriethoxysilane (MTES)-based sol-gel systems, establishing correlations between viscosity evolution and key structural parameters, such as hydrolysis degree and the distribution of crosslinking functional groups. A comparative analysis with tetraethoxysilane (TEOS), a more crosslinkable four-arm precursor, was also conducted. Using ²⁹Si NMR spectroscopy and coupled matrix-based Monte Carlo (CMMC) modeling, we extracted Arrhenius parameters for MTES hydrolysis and condensation, which were then applied under non-isothermal conditions simulating electrospinning environments, including solvent evaporation. This allowed us to extract molecular rules defining processing conditions that distinguish between no deposition, electrospraying and electrospinning. To validate the model, we randomly selected three synthesis conditions based on its predictions and tested them experimentally. Scanning electron microscopy (SEM) imaging confirmed that the resulting morphologies matched the predicted electrospinnability outcomes, demonstrating the reliability of the molecular rules derived from the model. By identifying molecular thresholds for successful electrospinning, such as siloxane yields and group fractions, this predictive framework provides a rational alternative to experimental trial-and-error, supporting the design of advanced organosilica membranes for sustainable technologies. Technology and Engineering http://hdl.handle.net/1854/LU-01KJA45HTM6VM1J2DSRJ60JK4E 10.5281/zenodo.17435261 2025 Ghent, Belgium Ghent University. Faculty of Engineering and Architecture 2025 2025 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01KJA45HTM6VM1J2DSRJ60JK4E/file/01KJA4CBK7R3HQZ0RQWT7T9DBK application/pdf https://biblio.ugent.be/publication/01KJA45HTM6VM1J2DSRJ60JK4E/file/01KJA4CRZ5PXC44P19FN6467GD application/vnd.openxmlformats-officedocument.wordprocessingml.document ug 01KJA45HTM6VM1J2DSRJ60JK4E 2026-02-25T10:05:30Z 2026-03-31T05:34:46Z C3 conference C3 Alice Novello aut author ug_TW11 0009-0002-0113-7028 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Annual Meeting of the Belgian Polymer Group (BPG 2025) eng Sol-gel chemistry offers powerful tools for engineering silica-based materials with tunable properties, including organosilica nanofiber membranes that are essential for applications such as chemical sensing, solvent separation, and electrochemical barriers. Despite their potential, the molecular factors that govern electrospinnability remain insufficiently understood. In particular, the complex relationship between hydrolysis kinetics, crosslinking dynamics, and rheological behavior often forces researchers to rely on empirical trial-and-error methods. To address this challenge, we developed a predictive framework for methyltriethoxysilane (MTES)-based sol-gel systems, establishing correlations between viscosity evolution and key structural parameters, such as hydrolysis degree and the distribution of crosslinking functional groups.1 A comparative analysis with tetraethoxysilane (TEOS), a more crosslinkable four-arm precursor, was also conducted. Using ²⁹Si NMR spectroscopy and coupled matrix-based Monte Carlo (CMMC) modeling, we extracted Arrhenius parameters for MTES hydrolysis and condensation, which were then applied under non-isothermal conditions simulating electrospinning environments, including solvent evaporation. This allowed us to extract molecular rules defining processing conditions that distinguish between no deposition, electrospraying and electrospinning. To validate the model, we randomly selected three synthesis conditions based on its predictions and tested them experimentally. Scanning electron microscopy (SEM) imaging confirmed that the resulting morphologies matched the predicted electrospinnability outcomes, demonstrating the reliability of the molecular rules derived from the model. By identifying molecular thresholds for successful electrospinning, such as siloxane yields and group fractions, this predictive framework provides a rational alternative to experimental trial-and-error, supporting the design of advanced organosilica membranes for sustainable technologies. Technology and Engineering http://hdl.handle.net/1854/LU-01KJ51GN003AP1PVCP9NS80GY3 TEMP103 1 p. 2025 2025 2025 No license (in copyright) published https://biblio.ugent.be/publication/01KJ51GN003AP1PVCP9NS80GY3/file/01KJ532BEVZNVHGMFSYDR8E4ZE application/pdf restricted ug 01KJ51GN003AP1PVCP9NS80GY3 2026-02-23T10:42:56Z 2026-03-31T05:31:58Z C3 journalArticle Article A1 Gerben Debruyn aut author ug_WE11 Seung Choi aut author Jessica Leigh Dobson aut author ug_WE11 Yana Maudens aut author ug_TW11 0009-0004-7574-7309 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Matthew Shawkey aut author ug_WE11 0000-0002-5131-8209 Shukang Zhang aut author Liliana D'Alba Altamirano aut author ug_WE11 0000-0002-2478-3455 eng Shelled eggs are key components of animal reproduction on land, evolving independently in distant lineages of terrestrial animals including nematodes, gastropods, annelids, arthropods and chordates. They regulate critical functions such as the exchange of gases between embryo and the environment, desiccation avoidance and protection from harmful radiation, microbial infection and mechanical damage. A core mechanism behind eggshell multifunctionality is the incorporation of minerals (mainly calcium carbonate and calcium phosphate) into the shell. Very little is known about eggshell structure in invertebrates, but some recent pioneer studies have proposed that similar mineralization patterns may have evolved convergently in eggshells of vertebrates, pulmonate gastropods, and stick insects. However, because a detailed characterization of the structural and chemical composition of invertebrate eggshells is not available, it has not been possible to test this hypothesis. Here, we use computed tomography, electron microscopy, electron backscatter diffraction analyses, atomic force microscopy, spectroscopy and histochemistry to characterize and compare microstructure and chemical composition of snails, insect and vertebrate eggshells. These techniques revealed the universal presence of an organic matrix in mineralized eggshells. However, disparities in the distribution of calcium throughout the shell, crystallographic orientation that appears random in invertebrates (but not vertebrates), and presence of different calcium types including the rare and unstable vaterite highlight divergence whose functional significance should be the subject of future study Technology and Engineering AMORPHOUS CALCIUM-CARBONATE EGG-CAPSULES MATRIX ULTRASTRUCTURE ARCHITECTURE MEMBRANES PROTEINS CHORION MODEL LAYER http://hdl.handle.net/1854/LU-01JQRG2BWC5BBKN9AJXKAKMY3E 10.1039/d5fd00028a 001507363800001 1359-6640 1364-5498 2025 1359-6640 1364-5498 2025 261 212 230 2025 A specific license has been chosen by the rights holder. Get in touch with the rights holder for reuse rights. published https://biblio.ugent.be/publication/01JQRG2BWC5BBKN9AJXKAKMY3E/file/01JQRG68CCTJ61N0VHM43NSSWG application/pdf private https://biblio.ugent.be/publication/01JQRG2BWC5BBKN9AJXKAKMY3E/file/01KPX5JTK2HGZ9NZ4KJ1M1WTKP application/pdf ug 01JQRG2BWC5BBKN9AJXKAKMY3E 2025-04-01T10:59:01Z 2026-04-23T12:39:45Z A1 VABB-1 journalArticle Article A1 Olmo Frateur aut author ug_TW11 0000-0002-0198-561X Martin Purino aut author ug_WE07 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Electrospun, water-stable nanofiber membranes made from hydrophilic, biocompatible poly(2-ethyl-2-oxazoline) (PEtOx) networks hold significant promise in biomedical applications, particularly in wound management. However, their mechanical behavior under varying environmental conditions remains poorly understood. This work provides an in-depth analysis of the tensile properties of photo-cross-linked cinnamoyl-modified high-molar-mass PEtOx (PEtOx-Cin) nanofiber membranes with varying ambient humidity, assessing their practical handling prior to application as wound dressings, while exploring their shape memory properties as basis for potential humidity-actuated wound closure. Cinnamoyl modification and cross-linking of PEtOx-Cin mats significantly improve moisture stability, accelerate moisture sorption, and raise the glass transition temperature (Tg) through newly formed covalent intermolecular bonds. At higher relative humidity (%RH) from 25 to 65%RH, moisture sorption induces plasticization, shifting the Tg below room temperature and transforming the membranes from brittle to highly ductile and elastomeric. This glass-to-rubber transition under ambient conditions enables humidity-stimulated shape memory behavior, revealing excellent temporary shape fixity at low humidity and rapid recovery to the original shape upon exposure to high humidity. The presented findings advance the understanding of cross-linked PEtOx-Cin nanofiber membranes, and while further optimization is needed to enhance mechanical stability at high humidity for improved handling, they underscore their unique potential for next-generation wound closure dressings. Technology and Engineering cinnamoyl poly(2-ethyl-2-oxazoline) photo-cross-linking electrospun nanofiber membranes humidity-dependent tensile properties humidity-actuated shape memory http://hdl.handle.net/1854/LU-01JRCV45PEF3T562A4JY36C75P 10.1021/acsami.5c03496 001461895400001 1944-8244 1944-8252 2025 1944-8244 1944-8252 2025 17 16 24474 24484 2025 No license (in copyright) published https://biblio.ugent.be/publication/01JRCV45PEF3T562A4JY36C75P/file/01JRCVBZET62XCP67SFNVQYRG1 application/pdf restricted https://biblio.ugent.be/publication/01JRCV45PEF3T562A4JY36C75P/file/01JRCXRXC3SE2262GXDXKANH7Z application/pdf ug 01JRCV45PEF3T562A4JY36C75P 2025-04-09T08:37:03Z 2026-04-09T00:00:15Z A1 VABB-1 journalArticle Article A1 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Alice Novello aut author ug_TW11 0009-0002-0113-7028 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Alessandro Trigilio aut author ug_TW11 0000-0001-8878-9947 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Sol-gel chemistry enables the synthesis of silica-based materials with tailored properties, including (organo)silica nanofiber membranes, which are valued for applications in sensors, solvent separation, and electrochemical barriers. Despite this potential, understanding and gearing the molecular parameters governing well-defined sol-gel electrospinnability remains a challenge, often requiring trial-and-error optimization. In this study, we (i) predicted the electrospinnability of methyltriethoxysilane (MTES)-based sol-gel systems by linking the viscosity evolution to key structural network parameters such as the hydrolysis degree and crosslinking functional groups distributions, and (ii) performed a comparative study to the leading building block tetraethoxysilane (TEOS), which is characterized by more crosslinking potential (4 arm TEOS vs 3 arm MTES). Using experimental data and coupled matrix-based Monte Carlo (CMMC) modeling, we determined Arrhenius parameters for MTES hydrolysis and condensation reactions. By applying the Arrhenius parameters to the non-isothermal synthesis conditions for electrospinning, accounting for evaporation, we retrieved molecular rules defining processing conditions, leading to no deposition, electrospraying and electrospinning. Using scanning electron microscopy (SEM) imaging, we confirmed the reliability of these molecular rules by randomly selecting three cases according to the kinetic model providing validation in predicting electrospinnability. Our predictive framework thus identifies molecular requirements for stable electrospinning, reducing reliance on empirical approaches, and facilitating the design of high-performance (organo)silica nanofiber membranes and sustainable applications. Technology and Engineering Structure-property relationships Crosslinking Model-based design Polymerization kinetics SI-29 NMR SOL NANOFIBERS POLYMERIZATION METHYLTRIETHOXYSILANE TETRAETHOXYSILANE FABRICATION HYDROLYSIS RHEOLOGY http://hdl.handle.net/1854/LU-01JXHMJZD4TXWNG54VJE2GV2AT 10.1016/j.cej.2025.164509 001510727500001 1385-8947 1873-3212 164509 11 p. 2025 1385-8947 1873-3212 2025 518 2025 No license (in copyright) published https://biblio.ugent.be/publication/01JXHMJZD4TXWNG54VJE2GV2AT/file/01JXHNF2Q12H092RBJXA7FREYK application/pdf restricted https://biblio.ugent.be/publication/01JXHMJZD4TXWNG54VJE2GV2AT/file/01JXHR9Z5QYV7GA4RDAKRAVCHH application/vnd.openxmlformats-officedocument.wordprocessingml.document https://biblio.ugent.be/publication/01JXHMJZD4TXWNG54VJE2GV2AT/file/01JXHRADRHBBVE86KSR3WNK7PK application/vnd.openxmlformats-officedocument.wordprocessingml.document ug 01JXHMJZD4TXWNG54VJE2GV2AT 2025-06-12T08:37:30Z 2026-03-31T15:16:08Z A1 VABB-1 journalArticle Article A1 Minglun Li aut author ug_TW11 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Tom Vandevyvere aut author Varun Singh aut author Maarten Sabbe aut author ug_TW11 0000-0003-4824-2407 Jeroen Lauwaert aut author ug_TW11 0000-0003-2781-3477 Hilde Poelman aut author ug_TW11 0000-0003-4267-7397 Vladimir Galvita aut author ug_TW11 0000-0001-9205-7917 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Alumina nanofibers prepared by electrospinning without polymer additives are presented as a catalyst material for esterification reactions. An optimal synthesis recipe has been determined based on an Al‐alkoxide precursor (aluminum di(sec‐butoxide) acetoacetic ester chelate [ASB]). By using an initial molar composition of 1:3:0.2:0.8 for ASB:ethanol:hydrochloric acid:distilled water, and maintaining a dynamic viscosity between 50 and 150 mPa s, homogeneous alumina nanofibers with excellent thermal resistance are produced. The acidity, as an indicator of catalytic potential, was evaluated using NH3 temperature‐programmed desorption and compared with alternative catalysts of similar chemical nature, including cast alumina, γ‐alumina, and HZSM‐5. Testing of the alumina fibers as a catalyst in an esterification reaction (conversion of n‐pentanol and acetic acid into pentyl acetate) showed catalytic activity with higher conversion than the commercial alternatives. In addition, the reusability of the material was confirmed, thereby highlighting its potential as a highly efficient catalyst. Technology and Engineering ceramics design of experiments electrospinning heterogeneous catalysis high purity alumina macropores sol-gel synthesis GAMMA-ALUMINA ACETIC-ACID ADSORPTION FIBERS TPD HYDROLYSIS MORPHOLOGY STABILITY MEMBRANES ZEOLITES http://hdl.handle.net/1854/LU-01JWZKP23T4TKVTH0WP315NTG1 10.1111/jace.70007 001501382900001 0002-7820 1551-2916 e70007 13 p. 2025 0002-7820 1551-2916 2025 108 10 2025 No license (in copyright) published https://biblio.ugent.be/publication/01JWZKP23T4TKVTH0WP315NTG1/file/01JWZP4Z6RH4BKR5SQ3NHJ5YXH application/pdf https://biblio.ugent.be/publication/01JWZKP23T4TKVTH0WP315NTG1/file/01K4AJNJ3W4CBZMCWDN5Q0XX37 application/pdf restricted ug 01JWZKP23T4TKVTH0WP315NTG1 2025-06-05T08:35:22Z 2026-03-31T15:16:02Z A1 VABB-1 journalArticle Article A1 Daniele Finazzi aut author ug_UGent 0000-0002-6418-6823 Yuriy Sinchuk aut author ug_UGent 0000-0002-2007-9874 Ruben Sevenois aut author ug_UGent 0000-0003-4977-2522 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Gilles Robert aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 eng This paper studies thermomechanical coupling during room-temperature tensile testing of polyamide-6 (PA6) and 50 wt% short glass fibre/PA6. The tests were performed for different fibre angles (0°, 45°, 90°), moisture contents (dry, 50%RH), and strain rates (10^(-4), 10^(-2), 10^(-1) s^(-1)). Digital image correlation (DIC) was coupled with infrared thermography. The contribution of the local strains, strain rates and temperatures to the global mechanical behaviour was investigated throughout deformation. The initial thermoelastic response was used to estimate the coefficient of thermal expansion. In PA6, neck development caused significant self-heating at high strain rates, differently between dry and 50%RH. In glass/PA6, however, temperature rises were always small (< +3 °C) despite local strain rate peaks in the fracture zone. This was ascribed to limited plastic deformation, as confirmed by post-mortem microscopy. The full-field data can be highly valuable for the development of advanced constitutive models for both pure polymer and short fibre composite. Technology and Engineering Chemistry Physics and Astronomy Polyamide-6 (PA6) Short fibre-reinforced composites (SFRPs) Tensile tests Digital image correlation (DIC) Self-heating http://hdl.handle.net/1854/LU-01HPKKW4536F09QX221966778V 10.1016/j.polymertesting.2024.108361 001186968800001 0142-9418 1873-2348 108361 15 p. 2024 0142-9418 1873-2348 2024 132 2024 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/01HPKKW4536F09QX221966778V/file/01HPKM10ZZ3DKR18GYWKGD8R0Q application/pdf ug 01HPKKW4536F09QX221966778V 2024-02-14T10:51:19Z 2026-03-31T12:52:28Z A1 VABB-1 journalArticle Article A1 Daniele Finazzi aut author ug_UGent 0000-0002-6418-6823 Guillem Seychal aut author Jean-Marie Raquez aut author Gilles Robert aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 eng Polyamide-6 (PA6) and short glass fibre-reinforced PA6 (GPA6) are increasingly used in structural automotive parts exposed to harsh conditions, respectively as liner in Type IV hydrogen tanks and under-the-hood components near the engine. Safe design requires understanding of their complex mechanical behaviour under the influence of temperature, moisture, and strain rate. Two models often applied in the literature are the temperature-humidity equivalence and the time-temperature superposition (TTS), however their accuracy to describe the full mechanical response is still unclear. By generating high-quality data, this paper conducts a quantitative study of these models on the mechanical response of injection-moulded PA6 and GPA6 with a very high fibre content (50 wt%). The materials were conditioned either dry or at 50%RH. Dynamic mechanical analysis (DMA) was used to measure the glass transition temperature of dry PA6 and 50%RH PA6, and to construct TTS master curves. Tensile tests were then conducted at different combinations of temperature, moisture, and strain rate. Comparison of the tensile true stress-true strain curves revealed that the proposed models fail to capture the effects of the thermal history, which may cause microstructural modifications as demonstrated with differential scanning calorimetry (DSC). The link between DSC, DMA, and tensile data constitutes a novelty of this work and was possible because all the samples had the same hygro-thermal history. Additionally, self-heating of PA6 causes deviations from the TTS at large strains. The results of this study may help develop more accurate material models, ultimately improving the design of structural automotive parts. Chemistry Technology and Engineering Polyamide-6 (PA6) Short fibre-reinforced polymers (SFRPs) Time-temperature superposition (TTS) Dynamic mechanical analysis (DMA) Differential scanning calorimetry (DSC) Tensile tests PLASTIC-DEFORMATION WATER TRANSITION POLYMERS RELAXATION BEHAVIOR http://hdl.handle.net/1854/LU-01JDW0BCRZK37JEJ1VBA4BTBPW 10.1016/j.polymertesting.2024.108653 001372537900001 0142-9418 1873-2348 108653 15 p. 2024 0142-9418 1873-2348 2024 141 2024 Creative Commons Attribution-NonCommercial 4.0 International Public License (CC BY-NC 4.0) published https://biblio.ugent.be/publication/01JDW0BCRZK37JEJ1VBA4BTBPW/file/01JDW0E0VSRCB70QHK3CE1N1QH application/pdf ug 01JDW0BCRZK37JEJ1VBA4BTBPW 2024-11-29T13:04:19Z 2026-03-31T14:15:21Z A1 VABB-1 journalArticle Article A1 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Bianca Swanckaert aut author 0000-0001-6036-6512 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Tetraethyl orthosilicate (TEOS) directly electrospun nanofibrous membranes are well-established for high-demanding applications. However, further expansion and exploitation of these materials require broadening the portfolio of Si-based precursors. In the present work, a part of the Si–O–Si linkages is therefore replaced by terminal groups (Si–R) or bridged organic linkages (Si-R-Si), playing with the inorganic-organic precursor balance considering triethoxymethylsilane (TEOMS), bis(triethoxysilyl)methane (BTESM) or bis(triethoxysilyl)ethane (BTESE). Both a rheological and kinetic analysis for the sol-gel synthesis of these three precursors is first done in comparison with the TEOS-based reference system, followed by an in-depth study of the electrospinning potential and the resulting organosilica nanofibrous materials properties. The production of the nanofibrous materials is achieved by electrospinning of a partly cross-linked sol-gel system with an optimal initial precursor/H2O/EtOH ratio selecting a sufficiently low temperature. It is demonstrated that the precursor/H2O ratio mainly controls the reactivity of the polycondensation by hydrolysis enhancement, and the precursor/EtOH ratio allows control over the dynamic viscosity due to dilution of the system. Depending on the chemical structure, a different range of workable viscosity conditions is obtained, highlighting the relevance of the construction of structure-property relationships. The rheological and kinetic analysis underpinned the relation of chemistry building blocks and organosilica network synthesis for material applications in general for the first time. Overall, a wide portfolio of membrane properties is reported, including the control over water take-up, acidity and basicity strength, and thermal stability starting from molecular thus chemical variations. Technology and Engineering Organosilica nanofibers Sol-gel synthesis Electrospinning Chemical inertness Wettability control http://hdl.handle.net/1854/LU-01HNZ8NZC5ENVF6C63C1FJNPJC 10.1016/j.mtchem.2024.101950 001176489800001 2468-5194 101950 13 p. 2024 2468-5194 2024 36 2024 No license (in copyright) published https://biblio.ugent.be/publication/01HNZ8NZC5ENVF6C63C1FJNPJC/file/01HNZ9NDNEHS44EEH6Z5C7EC9R application/pdf restricted https://biblio.ugent.be/publication/01HNZ8NZC5ENVF6C63C1FJNPJC/file/01HNZDAYQ9XFCPGNCKE6J99M61 application/vnd.openxmlformats-officedocument.wordprocessingml.document ug 01HNZ8NZC5ENVF6C63C1FJNPJC 2024-02-06T13:10:54Z 2026-03-31T12:55:04Z A1 VABB-1 journalArticle Article A1 Olmo Frateur aut author ug_TW11 0000-0002-0198-561X Jana Becelaere aut author 0000-0001-5024-3308 Ronald Merckx aut author 0000-0002-2867-0888 Joachim Van Guyse aut author Martin Purino aut author ug_WE07 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Poly(2-ethyl-2-oxazoline) (PEtOx) is a potent member of the versatile poly(2-oxazoline) polymer platform with its high hydrophilicity that could be beneficial in numerous biomedical applications, especially in the form of a nanofibrous membrane. However, its water-solubility limits its application in situations where a stable, nanofibrous morphology is required in aqueous environments. The present work offers a straightforward route towards water-stable PEtOx-based nanofibrous membranes, via post-polymerization functionalization with cinnamoyl moieties (PEtOx-Cin) and photo-crosslinking of the electrospun membranes. It is shown that a UVB treatment does not significantly affect the nanofibrous morphology, while successfully inducing the cinnamoyl dimerization process and hence the formation of a polymeric network, as evidenced by spectral analysis. The hereby crosslinked PEtOx-based nanofibers exhibit a prolonged water-stability (at least 45 days), while, interestingly, intermediate irradiation times yield the best results. Full disintegration of the photo-crosslinked nanofibers in aqueous media could be achieved by subsequent UVC exposure. This is not only due to decrosslinking of the cinnamoyl dimers, but was also found to be due to partial degradation of the polymeric backbone. The investigation of UVB/UVC exposure on pure PEtOx nanofibrous membranes confirmed the photo-degradation of the polymeric backbone by a significant decrease in molar mass as observed by size exclusion chromatography and supported by spectral analysis. The hereby proposed, straightforward route for reversible crosslinking of PEtOx-based nanofibrous membranes and their accessible disintegration will contribute to the promotion of these materials in biomedical applications where a water-stable, nanofibrous morphology combined with high hydrophilicity and easy removal is required. Technology and Engineering Chemistry Solvent electrospinning Nanofibers Poly(2-ethyl-2-oxazoline) Cinnamoyl Photo-crosslinking Water-stability Photo-degradation CRYSTAL ALIGNMENT PROPERTIES ELECTROSPUN NANOFIBERS PARTIAL HYDROLYSIS DRUG-DELIVERY POLY(2-OXAZOLINE)S LINKING POLY(2-ETHYL-2-OXAZOLINE) PHOTOREACTIVITY POLYMERIZATION NANOPARTICLES http://hdl.handle.net/1854/LU-01HX9H1DPNFY4XKVNWCZ8ZRB09 10.1016/j.eurpolymj.2024.113076 001239112000001 0014-3057 113076 16 p. 2024 0014-3057 2024 212 2024 No license (in copyright) published https://biblio.ugent.be/publication/01HX9H1DPNFY4XKVNWCZ8ZRB09/file/01HX9HCHZQGF90BVSGGJ1ESHM7 application/pdf restricted https://biblio.ugent.be/publication/01HX9H1DPNFY4XKVNWCZ8ZRB09/file/01HX9HD9BP9QENH5ZSV15J72DC application/pdf https://biblio.ugent.be/publication/01HX9H1DPNFY4XKVNWCZ8ZRB09/file/01HX9HEC9BH3JDYGWJ5KDJQCHV application/pdf ug 01HX9H1DPNFY4XKVNWCZ8ZRB09 2024-05-07T12:39:15Z 2026-03-31T14:04:59Z A1 VABB-1 conference C1 Daniele Finazzi aut author ug_UGent 0000-0002-6418-6823 Gilles Robert aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Cristophe Binetruy edt editor Frédéric Jacquemin edt editor 21st European Conference on Composite Materials (ECCM21) eng This paper studies thermomechanical coupling during room-temperature tensile testing of polyamide-6 (PA6) and short glass fibre/PA6 (50 wt%). The tests were performed for different dominant angles of the short fibres (0°, 45°, 90°), moisture contents (dry, 50%RH), and strain rates (10 −4 , 10 −2 , 10 −1 s −1). Digital image correlation (DIC) was coupled with infrared thermography. The contribution of the local strains, strain rates and temperatures to the global mechanical behaviour was investigated throughout deformation. The initial thermoelastic response was used to estimate the coefficient of thermal expansion. In PA6, neck development caused significant self-heating at high strain rates, differently between dry and 50%RH. In glass/PA6, however, temperature rises were always small (< +3 °C) despite local strain rate peaks in the fracture zone. This was ascribed to limited plastic deformation, as confirmed by post-mortem microscopy. The full-field data can be highly valuable for the development of advanced constitutive models for both pure polymer and short fibre composite. Technology and Engineering http://hdl.handle.net/1854/LU-01J28RPZ13508VRDJ8H14JS2KS 9782912985019 2024 9782912985019 The European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes. 2024 3 122 129 2024 Creative Commons Attribution-NonCommercial 4.0 International Public License (CC BY-NC 4.0) published https://biblio.ugent.be/publication/01J28RPZ13508VRDJ8H14JS2KS/file/01J28S6D6JAECEE5F00CYV4R27 application/pdf https://eccm21.org/ https://sdrive.cnrs.fr/s/Hsy686dM2S6fYGw?dir=undefined&openfile=4079071 https://gem.ec-nantes.fr/en/eccm21-proceedings/ ug 01J28RPZ13508VRDJ8H14JS2KS 2024-07-08T08:52:36Z 2026-03-31T12:56:26Z C1 VABB-5 journalArticle Review A1 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Damien P. Debecker aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng The continuous development of advanced catalysts to increase process yield and selectivity is crucial. A high specific surface area and a good active phase dispersion are generally essential to create catalytic materials with a large number of active sites. Notably, materials with a fibrous morphology are appealing because of their large surface‐to‐volume ratio and flexibility. This contribution highlights the morphology of different types of fibrous structures currently under investigation, all the way from the nanoscale to the macroscale and back, where the distinction lies in the length and diameter of the fibers, as well as in the connection between the structures. Fibers with at least one submicron to nanoscale characteristic result in a higher yield, but can display practical usability issues when unbound. Therefore, fibrous structure catalysts with a balance between the small diameter and handleability are important for industrial viability. By combining different morphologies, the best of both nanomaterials and macroscopic integer materials can be combined into advanced catalytic materials. This overview showcases the large potential of these materials but makes clear that further research is needed to keep expanding the use and effectiveness of fibrous structures in catalysis. Technology and Engineering Inorganic Chemistry Organic Chemistry Physical and Theoretical Chemistry Catalysis Fiber-based catalysts Nanofibers Porosity Surface-to-volume ratio http://hdl.handle.net/1854/LU-01HTYYQ114XTD4XGJPGBT0QWTA 10.1002/cctc.202301563 001173804900001 1867-3880 1867-3899 e202301563 12 p. 2024 1867-3880 1867-3899 2024 16 14 2024 No license (in copyright) published https://biblio.ugent.be/publication/01HTYYQ114XTD4XGJPGBT0QWTA/file/01HTYZ582NKDFCS4JM59HBDTG0 application/pdf https://biblio.ugent.be/publication/01HTYYQ114XTD4XGJPGBT0QWTA/file/01J6VD8HF0M8ZJMQ9JQY992W7Z application/pdf restricted https://biblio.ugent.be/publication/01HTYYQ114XTD4XGJPGBT0QWTA/file/01J6VDBYQ76HSJR1GCNNAE0ED9 application/pdf private ug 01HTYYQ114XTD4XGJPGBT0QWTA 2024-04-08T13:35:12Z 2026-03-31T13:55:00Z A1 VABB-1 journalArticle Article A1 Minglun Li aut author ug_TW11 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Highly stable hydrophobic silica-based membranes were successfully fabricated through chemical post-modification of directly electrospun silica nanofibrous membranes. Five different Si-alkoxy chlorides were tried as reagents at room temperature, allowing for an easy two-step production process. Trimethylchlorosilane (TMCS) was determined as to be the most suitable modifier, for this purpose. The modified membrane exhibits long-term hydrophobicity even under high humidity and water submersion, maintaining this property after exposure to elevated temperatures and acidic conditions, surpassing the unmodified membrane. The separation effectiveness for immiscible water/solvent solutions was proven, followed by an investigation into the relation between the surface tension of some miscible water/solvent solutions and the resulting wetting behavior of the TMCS-modified membrane, to utilize the membrane as a process intensification tool, specifically as a solvent gate. Technology and Engineering Chemistry Polymers and Plastics Materials Chemistry Electronic, Optical and Magnetic Materials Materials Science (miscellaneous) Electrospinning Nanofibers silica Post-functionalization Hydrophobicity Separation barrier WATER FABRICATION STABILITY REMOVAL FILTRATION COMPOSITE MATS MESH OIL http://hdl.handle.net/1854/LU-01HEMVT5YQPNE0S9D0E80PSVBM 10.1007/s42765-023-00335-y 001092839900001 2524-7921 2524-793X 2024 2524-7921 2524-793X 2024 6 1 145 157 2024 No license (in copyright) published https://biblio.ugent.be/publication/01HEMVT5YQPNE0S9D0E80PSVBM/file/01HEMXMETAM80E1WX4Z7RJZW8F application/pdf https://biblio.ugent.be/publication/01HEMVT5YQPNE0S9D0E80PSVBM/file/01J091YA77JZTNPDQYZTQE4HSH application/pdf restricted ug 01HEMVT5YQPNE0S9D0E80PSVBM 2023-11-07T12:23:43Z 2026-03-31T13:48:14Z A1 VABB-1 journalArticle Article A1 Gerben Debruyn aut author ug_WE11 Thies H. Büscher aut author Michaël Nicolaï aut author ug_WE11 0000-0002-9570-0311 Jessica Leigh Dobson aut author ug_WE11 Wanjie Xie aut author ug_WE11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Liliana D'Alba Altamirano aut author ug_WE11 0000-0002-2478-3455 Matthew Shawkey aut author ug_WE11 0000-0002-5131-8209 eng Colours in nature can be pigmentary, structural or a combination of both. The prevalence, function and nanostructural origin of structural coloration in eggs is largely unknown. Stick and leaf insect eggs display a wide variety of colours, most of which are produced by pigments. The eggs of Myronides glaucus (Phasmida: Lonchodidae; Hennemann, 2021), however, show a clear purple to green iridescence. Here, we use micro-spectrophotometry, Fourier-transform infrared reflectance, transmission- and scanning electron microscopy, atomic force microscopy, finite-difference time-domain optical simulations and experimental approaches to elucidate the mechanism for iridescence in M. glaucus eggshells, which together reveal that iridescence is caused by thin-film interference by a 200- to 450-nm-thick outermost layer. These results highlight the diversity of phasmid eggs and the need to study the different mechanisms and functions of structural coloration. Technology and Engineering Biology and Life Sciences eggs finite-difference time-domain simulation iridescence stick insect structural coloration STRUCTURAL COLOR MECHANISMS BEETLES PUPAE SCALE BIRD http://hdl.handle.net/1854/LU-01JDMEX9K4XKFAQF4PFNVBTN8R 10.1111/phen.12469 001338113100001 0307-6962 1365-3032 2024 0307-6962 1365-3032 2024 50 1 88 95 2024 No license (in copyright) published https://biblio.ugent.be/publication/01JDMEX9K4XKFAQF4PFNVBTN8R/file/01JDMF0C59J3H5ZFBRAXCGQ6PG application/pdf restricted https://biblio.ugent.be/publication/01JDMEX9K4XKFAQF4PFNVBTN8R/file/01JPME8SVZRX2GNDFYWC604JW9 application/pdf restricted ug 01JDMEX9K4XKFAQF4PFNVBTN8R 2024-11-26T14:44:50Z 2026-03-31T14:23:04Z A1 VABB-1 journalArticle Article A1 Gerben Debruyn aut author ug_WE11 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Michaël Nicolaï aut author ug_WE11 0000-0002-9570-0311 Wanjie Xie aut author ug_WE11 Maarten Wynant aut author Matthew Shawkey aut author ug_WE11 0000-0002-5131-8209 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Liliana D'Alba Altamirano aut author ug_WE11 0000-0002-2478-3455 eng The amniotic egg fulfils a critical role in reproduction by serving as an interface between the external environment and the embryo. Because non-avian reptiles are rarely incubated, they must be heated by, and absorb water from, the oviposition site for the developing embryo. The mechanisms by which they absorb sufficient, but not excess, water and how these mechanisms vary with local habitat is largely unknown, despite its significance to their evolution. Here, we first performed histology, Fourier-transform infrared spectroscopy and dynamic vapor sorption experiments to elucidate the mechanisms of eggshell absorption for 56 reptile species. Then, we used phylogenetic comparative analysis to test the hypothesis that the absorptive capacity of reptile eggshells increases with aridity of the environment. We found that water absorption increases in the presence of a superficial mucopolysaccharide layer and decreases with increased calcium content. We found that eggs from arid environments have highly absorbent eggshells, but only in species with weakly calcified shells. Our results suggest that reptile eggshells have over evolutionary time tuned absorptive capacity to environmental moisture level. Since these eggs often must sustain conflicting constraints, they may serve as inspirations for new biomimetic materials, such as water filtering membranes or humidity sensors. Biology and Life Sciences AMORPHOUS CALCIUM-CARBONATE WATER EXCHANGE EGG CUTICLE MICROSTRUCTURE INCUBATION EVOLUTION ARAGONITE LIZARD GROWTH http://hdl.handle.net/1854/LU-01J00YG8QZ62HKD34KBPVPS5KP 10.1093/icb/icae040 001239112400001 1540-7063 1557-7023 2024 1540-7063 1557-7023 2024 64 1 107 119 2024 No license (in copyright) published https://biblio.ugent.be/publication/01J00YG8QZ62HKD34KBPVPS5KP/file/01J00YHT8QK3GCWQX79EJDC5VR application/pdf restricted ug 01J00YG8QZ62HKD34KBPVPS5KP 2024-06-10T11:28:28Z 2026-03-31T14:22:32Z A1 VABB-1 journalArticle Article A1 Timo Meireman aut author Erik Verboven aut author ug_UGent 0000-0001-6164-0130 Mathias Kersemans aut author ug_TW11 0000-0002-9325-0556 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 eng This study investigates the effectiveness of polyether block amide (PEBA) thermoplastic elastomeric nanofibers in reducing low-velocity impact damage across three carbon fiber composite lay-up configurations: a cross-ply [0 degrees/90 degrees]2s (CP) and a quasi-isotropic [0 degrees/45 degrees/90 degrees/-45 degrees]s (QI) lay-up utilizing unidirectional plies, and a stacked woven [(0 degrees,90 degrees)]4s (W) lay-up using twill woven fabric plies. The flexural strength and interlaminar shear strength of the composites remained unaffected by the addition of nanofibers: around 750 MPa and 63 MPa for CP, 550 MPa and 58 MPa for QI, and 650 MPa and 50 MPa for W, respectively. The incorporation of nanofibers in the interlaminar regions resulted in a substantial reduction in projected damage area, ranging from 30% to 50% reduction over an impact energy range of 5-20 J. Microscopic analysis showed that especially the delamination damage decreased in toughened composites, while intralaminar damage remained similar for the cross-ply and quasi-isotropic lay-ups and decreased only in the woven lay-up. This agrees with the broad body of research that shows that interleaved nanofibers result in a higher delamination resistance due to toughening mechanisms related to nanofiber bridging of cracks. Despite their ability to mitigate delamination during impact, nanofibers showed limited positive effects on Compression After Impact (CAI) strength in quasi-isotropic and cross-ply composites. Interestingly, only the woven fabric composites demonstrated improved CAI strength, with a 12% improvement on average over the impact energy range, attributed to a reduction in both interlaminar and intralaminar damage. This study indicates the critical role of fiber integrity over delamination size in determining CAI performance, suggesting that the delaminations are not sufficiently large to induce buckling of sub-layers, thereby minimizing the effect of nanofiber toughening on the CAI strength. Technology and Engineering damage resistance electrospinning residual compressive strength DELAMINATION FIBER/EPOXY BEHAVIOR INTERLEAVES http://hdl.handle.net/1854/LU-01JS1WW95NEXW8TQ56G5193VPX 10.3390/polym16213060 001351767700001 2073-4360 3060 16 p. 2024 2073-4360 2024 16 21 2024 No license (in copyright) published https://biblio.ugent.be/publication/01JS1WW95NEXW8TQ56G5193VPX/file/01JS1XFZB6GV8H2J9ZNV6AYNY7 application/pdf ug 01JS1WW95NEXW8TQ56G5193VPX 2025-04-17T12:51:45Z 2026-03-31T05:14:17Z A1 VABB-1 conference C3 Olmo Frateur aut author ug_TW11 0000-0002-0198-561X Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 8th International Conference on Electrospinning (Electrospin2024) eng The attractive properties of poly(2-alkyl/aryl-2-oxazolines) (PAOx), including good biocompatibility and stealth behaviour, coupled with their structural variability and facile functionalization techniques, have amplified the research interest in this versatile polymer platform, particularly for applications focused in the biomedical field (Hoogenboom 2022; Yang et al. 2023). Notably, poly(2-ethyl-2-oxazoline) (PEtOx) presents remarkable potential due to its high hydrophilicity in situations where hygroscopic behaviour is desired, as illustrated by ongoing pre-clinical trials on PEtOx-drug conjugates (Moreadith et al. 2017), positioning PEtOx as a commercially competitive alternative to the more established poly(ethylene glycol) (PEG). By combining this material with the versatility and scalability of the solvent electrospinning technique, PAOx nanofibrous membranes emerge as an attractive support-material for demanding (biomedical) applications. However, the inherent water-solubility of PEtOx limits its application in situations where a stable, nanofibrous morphology is required in aqueous environments, such as in tissue engineering or wound dressings. The present work offers a straightforward route towards biocompatible, water-stable PEtOx-based nanofibrous membranes, via photo-crosslinking of the electrospun membranes comprising cinnamoyl-bearing PEtOx (PEtOx-Cin). The proposed functionalisation of PEtOx with cinnamoyl moieties entails a two-step process, involving partial hydrolysis of PEtOx to incorporate reactive polyethyleneimine units, followed by cinnamoyl addition. This post-polymerization approach allows for the utilization of large-scale, commercially available materials. After successful synthesis, homogeneous PEtOx-Cin nanofibrous mats are electrospun using only green solvents, in a process similar to that for unmodified PEtOx. It is revealed that a UVB treatment does not significantly affect the nanofibrous morphology, while successfully inducing the cinnamoyl dimerization process and hence the formation of a polymeric network, as evidenced by spectral analysis. Indeed, conversions of up to 95% after 24 h of UVB exposure of 10% functionalised PEtOx-Cin could be reached. The hereby crosslinked PEtOx-based nanofibers exhibit prolonged water-stability (at least 45 days), while, interestingly, intermediate irradiation times (5 h) yield the best results. Full disintegration of the photo-crosslinked nanofibers in aqueous media could be achieved by subsequent UVC exposure. This is not only due to decrosslinking of the cinnamoyl dimers, but also due to partial degradation of the polymeric backbone. Investigation of UVB/UVC exposure on pure PEtOx nanofibrous membranes confirmed the photo-degradation of the polymeric backbone, evidenced by a significant decrease in molar mass as observed by size exclusion chromatography and supported by spectral analysis. The hereby proposed, straightforward methodology for reversible biocompatible crosslinking of PEtOx-based nanofibrous membranes and their accessible disintegration will contribute to advance these materials in biomedical applications necessitating water-stable, nanofibrous morphologies combined with high hydrophilicity and easy removal. Acknowledgments This work was supported by the Research Foundation – Flanders (FWO) through a strategic research PhD grant (1S22722N), as well as the Centre for Textile Science and Engineering and the Supramolecular Chemistry group, both at Ghent University. References Hoogenboom, Richard. 2022. “The Future of Poly(2-Oxazoline)S.” European Polymer Journal 179:111521. doi: 10.1016/J.EURPOLYMJ.2022.111521. Moreadith, Randall W., Tacey X. Viegas, Michael D. Bentley, J. Milton Harris, Zhihao Fang, Kunsang Yoon, Bekir Dizman, Rebecca Weimer, Brendan P. Rae, Xiuling Li, Christoph Rader, David Standaert, and Warren Olanow. 2017. “Clinical Development of a Poly(2-Oxazoline) (POZ) Polymer Therapeutic for the Treatment of Parkinson’s Disease – Proof of Concept of POZ as a Versatile Polymer Platform for Drug Development in Multiple Therapeutic Indications.” European Polymer Journal 88:524–52. Yang, Liuxin, Faming Wang, Pengfei Ren, Tianzhu Zhang, and Qianli Zhang. 2023. “Poly(2-Oxazoline)s: Synthesis and Biomedical Applications.” Macromolecular Research 2023 31:5 31(5):413–26. doi: 10.1007/S13233-023-00116-X. Technology and Engineering http://hdl.handle.net/1854/LU-01JJPN13AF60WMMS2V3SV7R7M3 2024 2024 95 95 2024 No license (in copyright) published https://biblio.ugent.be/publication/01JJPN13AF60WMMS2V3SV7R7M3/file/01JJPPGXSXPYSS6JR6SJK30NCJ application/pdf restricted ug 01JJPN13AF60WMMS2V3SV7R7M3 2025-01-28T14:28:45Z 2026-03-31T05:13:27Z C3 journalArticle Article A1 Mehdi Nikforooz aut author ug_UGent Olivier Verschatse aut author 0000-0001-7732-6007 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 eng In short fibre composites, debonding cracks usually initiate from fibre tips and their growth is governed by the properties of the fibre/matrix interface. These properties are ideally acquired from a model test similar to the real composite, while excluding the effects of fibre fractures and the induced debonding interactions. Therefore, in this study, debonding growth was examined in detail, using novel single short fibre specimens, which were fabricated using a new methodology. These experiments were further complemented with a continuous fibre case study, where the established single fibre fragmentation specimens were evaluated. The progression of debonding and pull-out damages versus remote stress was studied for two fibre sizings utilizing real-time in-situ polarized light microscopy. A finite element model was built to obtain the fibre/matrix interfacial fracture toughness considering thermal residual stresses, friction and matrix plasticity, and a very good correlation was obtained between the model and the experiments. Technology and Engineering Polymer-matrix composites Interface Debonding Mechanical testing Polarized light microscopy Finite element analysis http://hdl.handle.net/1854/LU-01HX75FB27ARZCM04678FF34G9 10.1016/j.polymertesting.2024.108435 001237694500001 0142-9418 1873-2348 108435 15 p. 2024 0142-9418 1873-2348 2024 134 2024 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/01HX75FB27ARZCM04678FF34G9/file/01J039QF1NK9JY54KGGKAQ78AE application/pdf ug 01HX75FB27ARZCM04678FF34G9 2024-05-06T14:38:39Z 2026-03-31T05:13:04Z A1 VABB-1 journalArticle Article A1 Mehdi Nikforooz aut author ug_UGent Olivier Verschatse aut author 0000-0001-7732-6007 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 eng In short fibre composites, off-axis fibres are potentially subject to mixed-mode loading, which results in interactive debonding growth in opening and sliding modes. This synergy might differ for strong and weak fibre/ matrix bondings inducing discrete debonding patterns. This study employed an optical visualization technique to investigate, for the first time, the mixed-mode debonding growth for short fibres with different sizings and offaxis angles, through in-situ real-time measurements. For this purpose, embedded single short-fibre specimens were fabricated using E-glass fibres and an epoxy matrix, with a novel and more efficient manufacturing method than done so far in literature. E-glass fibres with two different sizings were utilized, including a polypropylenecompatible (weak) sizing and an epoxy-compatible (strong) sizing. While there was a relatively rapid debonding growth for the transverse fibres with the weak sizing, the strong sizing experienced a gradual debonding growth independent of the fibre angle. For the weak sizing, partial debonding cracks were initiated at different locations along the length of the fibres, where they coalesced into dominant debonding cracks. For the strong sizing, debonding was always initiated and localized at the fibre tip, and there was a clear synchronous propagation of debonding in the arc and length of the fibre. Technology and Engineering Short-fibre composites Debonding Fibre/matrix bond Interface Optical microscopy FRAGMENTATION TEST DAMAGE MECHANISMS NORMAL STRENGTH MATRIX INTERFACE FAILURE ADHESION BEHAVIOR http://hdl.handle.net/1854/LU-01HX74Q9CWJD0E3V5H4GST2CT7 10.1016/j.compscitech.2024.110488 001187855200001 0266-3538 1879-1050 110488 15 p. 2024 0266-3538 1879-1050 2024 249 2024 No license (in copyright) published https://biblio.ugent.be/publication/01HX74Q9CWJD0E3V5H4GST2CT7/file/01JD7P0Z7ENRH5Z6E99PKPA81C application/pdf restricted https://biblio.ugent.be/publication/01HX74Q9CWJD0E3V5H4GST2CT7/file/01K6A77EZMT48WB7F5JYR17EBC application/pdf ug 01HX74Q9CWJD0E3V5H4GST2CT7 2024-05-06T14:25:31Z 2026-03-31T15:05:56Z A1 VABB-1 conference C1 Olivier Verschatse aut author 0000-0001-7732-6007 Mehdi Nikforooz aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 21st European Conference on Composite Materials eng Technology and Engineering http://hdl.handle.net/1854/LU-01JS1VF9HWG31C9HNEBK37W6F6 10.60691/yj56-np80 2024 2024 4 175 181 2024 No license (in copyright) published https://biblio.ugent.be/publication/01JS1VF9HWG31C9HNEBK37W6F6/file/01JS1VPMB2KDFTEBA6ZBR6PEHZ application/pdf https://doi.org/10.60691/yj56-np80 ug 01JS1VF9HWG31C9HNEBK37W6F6 2025-04-17T12:27:11Z 2026-03-31T15:01:58Z C1 VABB-5 journalArticle Article A1 Ronald Merckx aut author 0000-0002-2867-0888 Vinita Dhaware aut author ug_WE07 Meike Leiske aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 eng Within the nanofiber field, cross-linked nanofiber networks have attracted a great deal of attention due to their remarkable properties. Compared to conventional fibrous structures, nanofibers are lightweight materials with small diameters, high porosity, controllable pore structures, and a high surface-to-volume ratio. To this end, cross-linking ensures solvent stability, making them ideal for various applications in which solvent contact or humid environments are prerequisites. This review aims to highlight the potential of nanofiber networks beyond their solvent resistivity by emphasizing the chemical reactivity of such novel systems and constructs. To this end, an overview of approaches for the preparation of a reactive nanofibrous network is presented, including the most recent (versatile) functional nanofiber reactive networks. Chemistry PHOTO-CROSS-LINKING ELECTROSPUN GELATIN NANOFIBERS PH-RESPONSIVE NANOFIBERS CLICK CHEMISTRY BIOMOLECULAR IMMOBILIZATION BIOMEDICAL APPLICATIONS RADICAL POLYMERIZATION BLOCK-COPOLYMERS FABRICATION FIBERS http://hdl.handle.net/1854/LU-01JAFVP59BHK4BMNWMSZBHSRQ9 10.1021/acs.chemmater.4c00277 001294198500001 0897-4756 1520-5002 2024 0897-4756 1520-5002 2024 36 19 9189 9206 2024 No license (in copyright) published https://biblio.ugent.be/publication/01JAFVP59BHK4BMNWMSZBHSRQ9/file/01JAFVTNX86CY77VSJ7PWNW10E application/pdf restricted https://biblio.ugent.be/publication/01JAFVP59BHK4BMNWMSZBHSRQ9/file/01JSKFZHKNTB1PAH2MF1CKKMXM application/pdf ug 01JAFVP59BHK4BMNWMSZBHSRQ9 2024-10-18T13:04:50Z 2026-03-31T05:13:46Z A1 VABB-1 conference C3 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Lies De Keer aut author 0000-0003-2620-0046 Paul Van Steenberge aut author ug_TW11 0000-0001-6244-1299 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 8th International Conference on Electrospinning eng Technology and Engineering http://hdl.handle.net/1854/LU-01JJKZHBVQ7QDHJ5XQEG5G7PG4 1 p. 2024 2024 2024 No license (in copyright) published https://biblio.ugent.be/publication/01JJKZHBVQ7QDHJ5XQEG5G7PG4/file/01JJKZVZK5HHGAYC19STMNH4YY application/vnd.openxmlformats-officedocument.wordprocessingml.document ug 01JJKZHBVQ7QDHJ5XQEG5G7PG4 2025-01-27T13:34:40Z 2026-03-31T15:13:27Z C3 conference C3 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Alessandro Trigilio aut author ug_TW11 0000-0001-8878-9947 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 4th International Conference on Polymer Process Innovation (PPI 2024) eng Polymer networks play an indispensable role in advancing next-generation materials. The design of such large-scale chemical entities is challenging, primarily hindered by the limited comprehension of the effect of reaction conditions on the final macroscopic properties of polymer gels and their product performance due to a lack of proper characterization tools for such complex topologies. Our research group has developed a combined kinetic Monte Carlo and molecular dynamics tool that accounts for kinetics, thermodynamics, and topological features of the formed polymeric networks. By employing this in silico-based characterization tool, we can thoroughly examine the structural evolution of individual macromolecules/segments throughout network formation. This facilitates the fundamental insight into structure-property relationships, bridging the molecular and material scales, and enables the development of synthesis protocols toward maximal material performance. In this work, experimental studies into the synthesis, material characterization, and practical application level of organosilica networks demonstrate the high validation potential of this advanced tool. One notable application is the sol-gel-based synthesis of organosilica networks for electrospinning highly resistant filtration membranes. These membranes show promise in various applications, including gravity-driven separation of heterogeneous azeotropes and ion-exchange processes Chemistry Technology and Engineering http://hdl.handle.net/1854/LU-01JHSWANJ3ACGR909MTBTNAAMR P2464 1 p. 2024 2024 2024 No license (in copyright) published https://biblio.ugent.be/publication/01JHSWANJ3ACGR909MTBTNAAMR/file/01JHSWDJWH6VY9PD8EXYMC6TJJ application/pdf https://biblio.ugent.be/publication/01JHSWANJ3ACGR909MTBTNAAMR/file/01JHSWDNZT9KKHN763EW2F30BH application/pdf https://www.ppiconference.eu/_files/ugd/ce98f1_73c8edc7a33b41d38c8dd3c50d0748c8.pdf https://www.ppiconference.eu/ ug 01JHSWANJ3ACGR909MTBTNAAMR 2025-01-17T10:18:20Z 2026-03-31T15:13:27Z C3 conference C3 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Alessandro Trigilio aut author ug_TW11 0000-0001-8878-9947 Mariya Edeleva aut author ug_TW11 0000-0003-0421-237X Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Lies De Keer aut author 0000-0003-2620-0046 Pablo Reyes Isaacura aut author ug_TW11 0000-0001-6662-3313 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Paul Van Steenberge aut author ug_TW11 0000-0001-6244-1299 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Reinhold Dauskardt aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Macromolecular Chemistry & Soft Matter Connects Symposium 2024 eng Network materials are important both in nature and in the field of synthetic chemistry. Depending on the chemistry, the degree or order of the molecular build-up of the network is altering, affecting the macroscopic properties. In this work, a generic framework is presented that enables an unprecedented quantification of polymer network synthesis at the molecular scale based on matrix-based kinetic Monte Carlo simulations. The framework enables obtaining the 3D molecular structure of the network at any synthesis time as well as hard-to-access molecular descriptors such as the molecular pore size distribution. The experimental validation of the framework is illustrated in this work by combining the coupled matrix-based Monte Carlo modeling with 29Si nuclear magnetic resonance (NMR) to capture the crosslinking kinetics of tetraethyl orthosilicate (TEOS). By developing a dedicated 29Si NMR protocol, the chemical kinetics of the reactions can be understood by reporting the Arrhenius parameters for the most important reactions for the TEOS crosslinking with hydrochloric acid (HCl) as reference case. Moreover, these Arrhenius parameters are used to better understand the non-isothermal kinetics Technology and Engineering Chemistry http://hdl.handle.net/1854/LU-01JHJEW8C4F62BK6WN98QKPSQ4 1 p. 2024 2024 2024 No license (in copyright) published https://biblio.ugent.be/publication/01JHJEW8C4F62BK6WN98QKPSQ4/file/01JHJEZ47AH6DG1Y5PS5X1CXJC application/pdf https://biblio.ugent.be/publication/01JHJEW8C4F62BK6WN98QKPSQ4/file/01JHJEZ7VTZE6XHK041R91D99Y application/pdf https://www.dwi.rwth-aachen.de/en/page/macromolecular-chemistry-soft-matter-connects ug 01JHJEW8C4F62BK6WN98QKPSQ4 2025-01-14T13:08:35Z 2026-03-31T15:13:27Z C3 conference C3 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Alessandro Trigilio aut author ug_TW11 0000-0001-8878-9947 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Macromolecular Chemistry & Soft Matter Connects Symposium 2024 eng Polymer networks play an indispensable role in advancing next-generation materials. The design of such large-scale chemical entities is challenging, primarily hindered by the limited comprehension of the effect of reaction conditions on the final macroscopic properties of polymer gels and their product performance due to a lack of proper characterization tools for such complex topologies. Our research group has developed a combined kinetic Monte Carlo and molecular dynamics tool that accounts for kinetics, thermodynamics, and topological features of the formed polymeric networks. By employing this in silico-based characterization tool, we can thoroughly examine the structural evolution of individual macromolecules/segments throughout network formation. This facilitates the fundamental insight into structure-property relationships, bridging the molecular and material scales, and enables the development of synthesis protocols toward maximal material performance. In this work, experimental studies into the synthesis, material characterization, and practical application level of organosilica networks demonstrate the high validation potential of this advanced tool. One notable application is the sol-gel-based synthesis of organosilica networks for electrospinning highly resistant filtration membranes. These membranes show promise in various applications, including gravity-driven separation of heterogeneous azeotropes and ionexchange processes. Chemistry Technology and Engineering http://hdl.handle.net/1854/LU-01J9VB92A4KD7C84Q3PNWAJ9ZK 1 p. 2024 2024 2024 No license (in copyright) published https://biblio.ugent.be/publication/01J9VB92A4KD7C84Q3PNWAJ9ZK/file/01J9VBCHK5CASZYXC3H2NY8G5W application/pdf https://biblio.ugent.be/publication/01J9VB92A4KD7C84Q3PNWAJ9ZK/file/01J9VBCTZ0EC1G20HDEAMYVD6S application/pdf https://www.dwi.rwth-aachen.de/en/page/macromolecular-chemistry-soft-matter-connects https://www.dwi.rwth-aachen.de/files/redaktion/Macromolecular%2520Chemistry%2520and%2520Soft%2520Matter%2520Connects/MCSMCS_Abstract%2520Book%25202024.pdf ug 01J9VB92A4KD7C84Q3PNWAJ9ZK 2024-10-10T13:53:16Z 2026-03-31T15:13:28Z C3 conference C3 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Alessandro Trigilio aut author ug_TW11 0000-0001-8878-9947 Mariya Edeleva aut author ug_TW11 0000-0003-0421-237X Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Lies De Keer aut author 0000-0003-2620-0046 Pablo Reyes Isaacura aut author ug_TW11 0000-0001-6662-3313 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Paul Van Steenberge aut author ug_TW11 0000-0001-6244-1299 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Reinhold Dauskardt aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Annual Meeting of the Belgian Polymer Group (BPG 2024) eng Network materials are important both in nature and in the field of synthetic chemistry. Depending on the chemistry, the degree or order of the molecular build-up of the network is altering, affecting the macroscopic properties. In this work, a generic framework is presented that enables an unprecedented quantification of polymer network synthesis at the molecular scale based on matrix-based kinetic Monte Carlo simulations. The framework enables obtaining the 3D molecular structure of the network at any synthesis time as well as hard-to-access molecular descriptors such as the molecular pore size distribution. The experimental validation of the framework is illustrated in this work by combining the coupled matrix-based Monte Carlo modeling with 29 Si nuclear magnetic resonance (NMR) to capture the crosslinking kinetics of tetraethyl orthosilicate (TEOS). By developing a dedicated 29Si NMR protocol, the chemical kinetics of the reactions can be understood by reporting the Arrhenius parameters for the most important reactions for the TEOS crosslinking with hydrochloric acid (HCl) as reference case. Moreover, these Arrhenius parameters are used to better understand the non-isothermal kinetics utilized to synthesize sol/gel-like precursor solutions. Successful model validation under both isothermal and non-isothermal conditions is demonstrated, unlocking the door to a better understanding of TEOS crosslinking kinetics and associated material properties. Technology and Engineering Chemistry http://hdl.handle.net/1854/LU-01J9V8X9EKBJJXQ60QCW5756YN 1 p. 2024 2024 2024 No license (in copyright) published https://biblio.ugent.be/publication/01J9V8X9EKBJJXQ60QCW5756YN/file/01J9V909EYJ28S89RCTW0D19AF application/pdf https://biblio.ugent.be/publication/01J9V8X9EKBJJXQ60QCW5756YN/file/01J9V90M8TSVVFM4ZCRDBCVF3A application/pdf ug 01J9V8X9EKBJJXQ60QCW5756YN 2024-10-10T13:11:53Z 2026-03-31T15:13:28Z C3 conference C3 Yana Maudens aut author ug_TW11 0009-0004-7574-7309 Gerben Debruyn aut author ug_WE11 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Cinzia Tonetti aut author Claudia Vineis aut author Alessio Varesano aut author Liliana D'Alba Altamirano aut author ug_WE11 0000-0002-2478-3455 Matthew Shawkey aut author ug_WE11 0000-0002-5131-8209 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 22nd Faculty of Engineering and Architecture Research Symposium (FEARS 2024) eng Eggs are multifunctional structures that enabled vertebrates to colonize the land millions of years ago. Life on Earth imposes a series of environmental challenges on eggs, often presenting conflicting or contradicting demands. For example, eggs must be crack-resistant yet allow breakage from the inside, be impermeable to bacteria yet breathable and in some cases allow water absorption. Eggshells also offer protection from harmful radiation while allowing some light transmission. As a result, they have evolved into multifunctional systems with extraordinary properties, including unique combinations of high flexibility and strength, strong water absorption and antimicrobial filtration. Biomimicking of these natural structures could lead to the development of new materials with advanced properties for filtration/separation technology, sensors and biomedical applications. Through chemical and physical analysis of sixty-two reptile eggshells (Debruyn et al., 2024), the key structural components - namely a proteinaceous layer (primarily keratin) and an inorganic calcium carbonate component - were identified and used to develop biomimicry models. The non-woven layer of proteinaceous fibers closely resembles randomly oriented nanofibrous membranes produced via solvent electrospinning. Hence, keratin, extracted through a sulphitolysis process, was electrospun from formic acid. A subsequent heat treatment ensured crosslinking of residual amine and carboxyl groups in the keratin chains, imparting hydrophobicity and improved water stability to the nanofibrous membranes. To further approximate the eggshell’s inner proteinaceous layer, the keratin nanofibers were embedded in an egg white matrix using a dip-coating procedure. The mineral component, typically found in Testudines and Crocodylia eggshells, was mimicked by depositing calcium carbonate particles onto the keratin-based membranes. This biomimetic approach paves the way for the production of multifunctional, biocompatible keratin-based membranes tailored to the specific needs of various end-applications such as filtration membranes, wound dressings, smart textiles, etc. Biology and Life Sciences Technology and Engineering http://hdl.handle.net/1854/LU-01JHQNV8627WFA9YP4942R9H7P 10.5281/zenodo.15076977 2024 2024 2024 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01JHQNV8627WFA9YP4942R9H7P/file/01JHQPJPE1Z15QBZFXE80ZZV33 application/pdf ug 01JHQNV8627WFA9YP4942R9H7P 2025-01-16T13:46:34Z 2026-05-07T14:34:42Z C3 conference Meeting Abstract C3 Margot De Spiegeleer aut author ug_UZGent 0000-0002-1088-7245 Vera Plekhova aut author ug_DI04 0000-0002-6109-7032 Kimberly De Windt aut author ug_DI04 0000-0002-9589-5112 Marilyn De Graeve aut author ug_UGent 0000-0001-6916-401X Jozefien Geltmeyer aut author 0000-0002-1281-2968 Inge Gies aut author Stefaan De Henauw aut author ug_GE39 0000-0003-4141-5432 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lynn Vanhaecke aut author ug_DI04 0000-0003-0400-2188 32nd Annual Conference of ECOG eng This meeting is the report of the European Childhood Obesity Group 32nd Annual Congress in Albena (Bulgaria), taking place from the 7th to the 9th of September 2023. Medicine and Health Sciences Nutrition and Dietetics Medicine (miscellaneous) http://hdl.handle.net/1854/LU-01HP44SV8Z604P15WZ6N79V9M4 001100556000008 0250-6807 1421-9697 2023 0250-6807 1421-9697 S. Karger AG 2023 79 4 385 386 2023 No license (in copyright) published https://biblio.ugent.be/publication/01HP44SV8Z604P15WZ6N79V9M4/file/01HP459W4WQR6FNWG3RBPP0DAG application/pdf restricted https://karger.com/anm/article/79/4/381/862140/The-32nd-Annual-Conference-of-ECOG-Albena-Bulgaria ug 01HP44SV8Z604P15WZ6N79V9M4 2024-02-08T10:39:19Z 2026-03-31T13:27:40Z C3 conference C3 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Lies De Keer aut author 0000-0003-2620-0046 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Paul Van Steenberge aut author ug_TW11 0000-0001-6244-1299 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 ACS Fall 2023 eng Technology and Engineering http://hdl.handle.net/1854/LU-01HN2JS3RT2ZA4MECZV5G1SQB2 1 p. 2023 2023 2023 No license (in copyright) published https://biblio.ugent.be/publication/01HN2JS3RT2ZA4MECZV5G1SQB2/file/01HN2K4ZTARADDWDYHM268XSNR application/vnd.openxmlformats-officedocument.wordprocessingml.document ug 01HN2JS3RT2ZA4MECZV5G1SQB2 2024-01-26T09:49:24Z 2026-03-31T13:27:44Z C3 conference C3 Olmo Frateur aut author ug_TW11 0000-0002-0198-561X Jana Becelaere aut author 0000-0001-5024-3308 Chris Vervaet aut author ug_FW01 0000-0002-1291-6054 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 2023 MRS Fall Meeting & Exhibit eng Unfortunately, approximately 40% of all marketed drugs and over 90% of medicines in development suffer from poor aqueous solubility and hence limited bioavailability upon oral administration. This critical, current challenge in pharmaceutics has led to an increased interest in advanced aqueous solubility-enhancing strategies, with the formulation of amorphous solid dispersions (ASDs) as one of the most promising routes. Here, the active pharmaceutical ingredient is ideally molecularly dispersed in a polymeric carrier, hence increasing its chemical potential with respect to its highly stable crystalline counterpart and improving the thermodynamic driving force for dissolution in the gastrointestinal fluids. Nonetheless, the amount of marketed ASDs is still limited, as many ASDs lack physical stability due to their amorphous nature, and recrystallization to their less soluble state during production, downstream processing, storage, and dissolution often limits the applicability. In this research, an important step is taken towards the bioavailability improvement of poorly water-soluble drugs through the formulation of stable ASDs, with flubendazole (FBZ), itraconazole (ITC), mebendazole (MBZ), and celecoxib (CCX) as known Biopharmaceutics Classification System (BCS) class II model compounds. Solvent electrospinning of a working solution of the drug and poly(2-ethyl-2-oxazoline) is put forward, because of the extremely fast solvent evaporation, which freezes the API in the polymeric carrier in a highly homogeneous manner. This work demonstrates the viability and broad applicability of this strategy to produce stable nanofibrous ASDs with ultrahigh drug loadings (up to 55, 60, 70, and 80 wt% for FBZ, ITC, MBZ, and CCX, respectively) and long-term stability (at least one year). Importantly, at such high drug loadings, lowering the concentration of the polymer in the electrospinning solution below the concentration where it can be spun in the absence of the drug is essential, as the interactions between the polymer and the drug result in an increased solution viscosity. A combination of experimental analysis and molecular dynamics simulations revealed that this formulation strategy provides strong, dominant, and highly stable hydrogen bonds between the polymer and the drug, which is crucial to obtain the high drug loadings and to preserve the long-term amorphous character of the ASDs upon storage. In vitro drug release studies confirm the remarkable potential of this electrospinning formulation strategy by significantly increasing drug solubility values (e.g. up to 50 times for ITC after 5 hours) and dissolution rates, even after one-year storage of the formulations (as tested for FBZ). Technology and Engineering Chemistry http://hdl.handle.net/1854/LU-01HHKSJAXKY6K53AREEXFV198F SB09.08.09 2023 Materials Research Society (MRS) 2023 1000 1001 2023 No license (in copyright) published https://biblio.ugent.be/publication/01HHKSJAXKY6K53AREEXFV198F/file/01HHKT6XEAA3F42XVYB3KP1S68 application/pdf https://www.mrs.org/meetings-events/fall-meetings-exhibits/2023-mrs-fall-meeting/symposium-sessions%23program https://www.mrs.org/meetings-events/fall-meetings-exhibits/2023-mrs-fall-meeting https://www.mrs.org/docs/default-source/meetings-events/fall-meetings/2023/f23-abstract-book.pdf?sfvrsn=74480d09_1 ug 01HHKSJAXKY6K53AREEXFV198F 2023-12-14T09:12:20Z 2026-03-31T13:26:14Z C3 journalArticle Article A1 Jana Becelaere aut author 0000-0001-5024-3308 Olmo Frateur aut author ug_TW11 0000-0002-0198-561X Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Valérie Vanhoorne aut author ug_FW01 0000-0003-4249-3408 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Chris Vervaet aut author ug_FW01 0000-0002-1291-6054 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng In this work, the feasibility of ultra-high drug loaded amorphous solid dispersions (ASDs) for the poorly soluble itraconazole, mebendazole and celecoxib via solvent electrospinning in combination with poly(2-ethyl-2-oxazoline) and fenofibrate in combination with polyvinylpyrrolidone is demonstrated. By lowering the polymer concentration in the electrospinning solution below its individual spinnable limit, ASDs with a drug content of up to 80 wt% are obtained. This is attributed to drug-polymer interactions not being limited by default to hydrogen bonds, as also Van der Waals interactions can result in high drug loadings. The theoretically predicted miscibility by the Flory-Huggins theory is corroborated by the experimental findings based on (modulated) differential scanning calorimetry and x-ray diffraction. Globally, the maximally obtained amorphous drug loadings are higher compared to the loadings found in literature. Additionally, non-sink dissolution tests demonstrate an increase in solubility of up to 50 times compared to their crystalline counterparts. Moreover, due to the lack of precipitation biocompatible PEtOx succeeds in stabilizing the dissolved drug and inhibiting its instant precipitation. The current work thus demonstrates the broader applicability of the electrospinning technique for the production of physically stable ASDs with ultra-high drug loadings, a result which has been validated for several Biopharmaceutics Classification System class II drugs. Technology and Engineering Amorphous solid dispersions (ASDs) Poly(2-ethyl-2-oxazoline) (PEtOx) Solvent electrospinning Solubility enhancement Poorly soluble drugs Flory-Huggins http://hdl.handle.net/1854/LU-01HA25M3577S3JXMWKYCTN1GGJ 10.1016/j.jconrel.2023.08.054 001076370000001 0168-3659 1873-4995 2023 0168-3659 1873-4995 2023 362 268 277 2023 No license (in copyright) published https://biblio.ugent.be/publication/01HA25M3577S3JXMWKYCTN1GGJ/file/01HA25W562MJ0K1ARZA89ZP1HF application/pdf restricted https://biblio.ugent.be/publication/01HA25M3577S3JXMWKYCTN1GGJ/file/01HFEX7B8H29WRA1YFNJ6070GG application/pdf ug 01HA25M3577S3JXMWKYCTN1GGJ 2023-09-11T13:06:48Z 2026-03-31T13:26:24Z A1 VABB-1 journalArticle Article A1 Bianca Swanckaert aut author 0000-0001-6036-6512 Olivier Verschatse aut author 0000-0001-7732-6007 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Electrospun silica nanofiber membranes show a high potential in many advanced environmental applications. However, little is known about their mechanical performance which could be a limiting factor for further innovation. It is shown in this work that silica nanofiber membranes have a completely different deformation behavior compared to conventional polymeric/thermoplastic nanofiber membranes, resulting from their significant differences in chemical and physical properties such as fiber interactions and porosity. Furthermore, storage at room temperature initiates remarkable changes in failure mechanisms, depending on the storage humidity, which can be accelerated via a thermal treatment. These changes are linked to the structural changes of the membrane resulting from its chemical reactivity towards moisture in the air. Additional interactions and crosslinks are observed, leading to fiber shrinkage and rearrangement. As a result, more contact points are created between nanofibers, creating additional friction forces and, as such, a complete shift in mechanical properties towards a stronger, stiffer, and more brittle material (tensile strength of 14.0 ± 3.8 MPa vs. 3.1 ± 0.4 MPa and failure strain of 0.9 ± 0.2% vs. 24.2 ± 1.0%). The silica nanofiber membranes thus allow mechanical tunability via altering the storage or treatment conditions. Technology and Engineering Materials Chemistry Surfaces, Coatings and Films Process Chemistry and Technology Ceramics and Composites Electronic, Optical and Magnetic Materials Silica nanofiber membranes Electrospinning Deformation behavior Dynamic http://hdl.handle.net/1854/LU-01H815QS3246S1CHZTW91J8HVX 10.1016/j.ceramint.2023.08.041 001071928600001 0272-8842 1873-3956 2023 0272-8842 1873-3956 2023 49 20 33305 33315 2023 No license (in copyright) published https://biblio.ugent.be/publication/01H815QS3246S1CHZTW91J8HVX/file/01H816GA0YDQ33MW429JJ0X4TF application/pdf restricted https://biblio.ugent.be/publication/01H815QS3246S1CHZTW91J8HVX/file/01H8XYV55QN0B7QYYJKK87D6A8 application/pdf ug 01H815QS3246S1CHZTW91J8HVX 2023-08-17T07:18:11Z 2026-03-31T13:25:56Z A1 VABB-1 journalArticle Article A1 Kim Phan aut author ug_UGent 0000-0001-8660-5251 Sibel Ügdüler aut author ug_LA24 Lies Harinck aut author ug_LA24 Ruben Denolf aut author ug_UGent 0000-0002-1271-0128 Martijn Roosen aut author 0000-0002-9551-4658 Galahad O'Rourke aut author Dirk De Vos aut author Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Steven De Meester aut author ug_LA24 0000-0002-5246-3918 eng Textile products are composed of various blends of synthetic or natural polymers. Elastane increases the functionality during use phase, but impedes high quality recycling. This study investigates the selective chemical dissolution of elastane from blended textile. Hansen solubility parameters and COSMO-RS were applied for solvent screening. The most recommended biobased solvents were experimentally validated with polyester, polyamide, cotton, wool and elastane for which solubility limits were determined and hence, their selectivity towards elastane dissolution. A TGA-corrected gravimetric method was developed as quantification tool and showed that tetrahydrofurfuryl alcohol and ɣ-valerolactone have comparable elastane dissolution capabilities to classical solvents (5 mg elastane/g solvent). Polyester/elastane and polyamide/elastane blends were subjected to this process as case studies. The LCA study showed that this selective solvent-based dissolution process saves 60% CO2-eq./kg textile waste compared to incineration. This interdisciplinary work can set the benchmark for further developing and upscaling physical/dissolution recycling processes for blended textiles. Chemistry Textile Recycling Polymers COSMO-RS TGA solvent IONIC LIQUIDS SOLUBILITY PARAMETERS CELLULOSE FABRICS http://hdl.handle.net/1854/LU-01GRR1T4AEYTVZH7BR3VHVQZ6Y 10.1016/j.resconrec.2023.106903 000995487300001 0921-3449 1879-0658 106903 15 p. 2023 0921-3449 1879-0658 2023 191 2023 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/01GRR1T4AEYTVZH7BR3VHVQZ6Y/file/01GVFX6KXYPPEGGXTXNR3GAGKN application/pdf ug 01GRR1T4AEYTVZH7BR3VHVQZ6Y 2023-02-08T08:20:56Z 2026-03-31T13:19:32Z A1 VABB-1 journalArticle Article A1 Bram Vanthournout aut author ug_UGent Frans Janssens aut author Gerben Debruyn aut author ug_WE11 Johan Mertens aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Liliana D'Alba Altamirano aut author ug_WE11 0000-0002-2478-3455 Matthew Shawkey aut author ug_WE11 0000-0002-5131-8209 eng Colour is often not a static trait but can change over time either through biotic or abiotic factors. Humidity-dependent colour change can occur through either morphological change (e.g. to feather barbules in birds) or by the replacement of air bywater causing a shift in refractive index, as seen in arthropod multi-layer cuticles or scales. The scaled springtail Lepidocyrtus cyaneus has scales that produce colour largely via thin film interference from their lamina. We observed a marked colour change from golden to violet/purple coloration in humid conditions. Light microscopy, micro-spectrophotometry, contact angle goniometry and optical modelling indicate that the formation of a thin film of water on top of the hydrophilic scales increases their laminar thin film thickness, causing a shift towards violet/purple colour. Evaporation of thewater film causes the metallic golden colour to return. This constitutes a remarkably rapid colour change (in the order of seconds), only limited by the speed of water film condensation and evaporation, that may serve as inspiration for new dynamically coloured materials and sensors. Biology and Life Sciences Biomedical Engineering Biochemistry Biomaterials Bioengineering Biophysics Biotechnology Collembola humidity-dependent colour change scale spectrophotometry optical modelling MORPHOLOGY SPIDERS CUTICLE http://hdl.handle.net/1854/LU-01HMXJ84F1Z7V71KJMX1APM5EF 10.1098/rsif.2023.0228 001183798800001 1742-5689 1742-5662 20230228 8 p. 2023 1742-5689 1742-5662 2023 20 207 2023 No license (in copyright) published https://biblio.ugent.be/publication/01HMXJ84F1Z7V71KJMX1APM5EF/file/01HMXJ92T9RZB21HN5DM3N33M1 application/pdf restricted ug 01HMXJ84F1Z7V71KJMX1APM5EF 2024-01-24T11:03:56Z 2026-03-31T13:28:45Z A1 VABB-1 conference C3 Margot De Spiegeleer aut author ug_UZGent 0000-0002-1088-7245 Vera Plekhova aut author ug_DI04 0000-0002-6109-7032 Marilyn De Graeve aut author ug_UGent 0000-0001-6916-401X Inge Gies aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lynn Vanhaecke aut author ug_DI04 0000-0003-0400-2188 BeSOMS-BASO Winter Symposium 2023 eng Medicine and Health Sciences Chemistry Technology and Engineering Biology and Life Sciences http://hdl.handle.net/1854/LU-01GS5ZAXPVP643BB9BXQQ6BMWH 2 p. 2023 2023 2023 No license (in copyright) unpublished https://biblio.ugent.be/publication/01GS5ZAXPVP643BB9BXQQ6BMWH/file/01GS5ZFKKWE7BW1P0EGQA9V44D application/pdf restricted ug 01GS5ZAXPVP643BB9BXQQ6BMWH 2023-02-13T18:07:03Z 2026-03-31T08:18:25Z C3 journalArticle Article A1 Ronald Merckx aut author 0000-0002-2867-0888 Jana Becelaere aut author 0000-0001-5024-3308 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Olmo Frateur aut author ug_TW11 0000-0002-0198-561X Meike Leiske aut author ug_UGent Daniël Peeters aut author Adriana Jerca aut author ug_UGent Valentin-Victor Jerca aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 eng Global food waste is a cross-cutting issue that ranges from agricultural production to storage in households and leads to the loss of one-third of produced food products. Although the currently depicted static expiry, best-by, and due-by dates provide accurate information on when to consume the food product, these time indications are only valid under ideal storage conditions. Therefore, there is a stringent need for easy-to-use sensor applications that allow continuous monitoring of food freshness. This work showcases a straightforward and effortless approach to obtain highly porous cross-linked water-stable and reactive hydrophilic nanofiber membranes based on electrospinning of poly(2-isoproprenyl-2-oxazoline) (PiPOx) with succinic acid as the cross-linker. Subsequent thermal treatment of the produced succinic acid-containing PiPOx nanofiber networks generated sufficient cross-linking to preserve the fibrous morphology in an aqueous environment while retaining the hydrophilic character of the scaffold. The remaining 2-oxazoline side chains of PiPOx are stable at room temperature but provide reactivity for post-cross-linking modification with carboxylic acid-containing compounds, as exploited here for continuous food monitoring by incorporating acid-functionalized dyes to yield a colorimetric sensor for biogenic food spoilage indicators, such as thiol- and amine-containing small molecules. Chemistry Agriculture and Food Sciences ELECTROSPUN NANOFIBERS POLYMERIC NANOFIBERS BENDING INSTABILITY TIME-TEMPERATURE AQUEOUS-SOLUTION BIOGENIC-AMINES LINKING QUALITY PH POLY(2-ISOPROPENYL-2-OXAZOLINE) http://hdl.handle.net/1854/LU-01HV9GYYHNTRVD30F15P8K01F5 10.1021/acs.chemmater.3c01355 001178992000001 0897-4756 1520-5002 2023 0897-4756 1520-5002 2023 35 17 7079 7093 2023 No license (in copyright) published https://biblio.ugent.be/publication/01HV9GYYHNTRVD30F15P8K01F5/file/01HV9H0D49VDE7G4FR9RY4EJ4H application/pdf https://biblio.ugent.be/publication/01HV9GYYHNTRVD30F15P8K01F5/file/01HZPRQX22XW2VFV986SQGNWGP application/pdf restricted ug 01HV9GYYHNTRVD30F15P8K01F5 2024-04-12T16:06:30Z 2026-03-31T13:47:21Z A1 VABB-1 journalArticle Article A1 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Geert Watson aut author ug_UGent 0000-0002-2324-4521 Yingrui Zhao aut author Maria Meledina aut author Robbe Denis aut author Parviz Gohari Derakhshandeh aut author ug_UGent 0000-0001-9655-6019 Pascal Van Der Voort aut author ug_WE06 0000-0002-1248-479X Karen Leus aut author ug_TW17 ug_WE06 Damien P. Debecker aut author Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng An important challenge in the valorization of CO2 and H2 into fuels is the development of a stable, reusable and easy to handle heterogeneous catalyst. Here, a silica nanofibrous membrane is investigated as carrier for Ru nanoparticles, themselves encapsulated inside the metal organic framework (MOF) Cr-MIL-101. The catalytic membrane is investigated for the Sabatier methanation reaction. The direct electrospinning of a tetraorthosilicate (TEOS) sol results in a highly thermal resistant silica nanofibrous structure (up to 1100 degrees C) with pores between the fibers in the mu m-range, allowing a high gas throughput with low pressure requirements. A straightforward dip-coating procedure of the carrier was used to obtain a Ru@MIL-101 functionalized silica nanofibrous veil, avoiding Ru clustering. The obtained catalytic membrane exhibited an apparent turnover frequency of 3257 h-1 at 250 degrees C. This system therefore paves the way towards structured reactors for efficient CO2 hydrogenation processes. Chemistry Process Chemistry and Technology General Environmental Science Catalysis Silica nanofibers Metal -organic frameworks Ruthenium nanoparticles Heterogeneous catalysis Structured catalyst METAL-ORGANIC FRAMEWORKS CARBON-DIOXIDE RU/TIO2 CATALYSTS SABATIER REACTION COMPOSITE MEMBRANES CERAMIC NANOFIBERS MOF FABRICATION ADSORPTION HYDROGENATION http://hdl.handle.net/1854/LU-8768522 10.1016/j.apcatb.2022.121972 000862870500006 0926-3373 1873-3883 121972 11 p. 2023 0926-3373 1873-3883 2023 320 2023 No license (in copyright) published https://biblio.ugent.be/publication/8768522/file/8768523 application/pdf restricted https://biblio.ugent.be/publication/8768522/file/01GR0YA6K95WWG6B3MNZ2SR7ZN application/pdf https://biblio.ugent.be/publication/8768522/file/01GR0YCWA50KC1R16JAWXDMWQS application/pdf ug 8768522 2022-10-02T18:39:25Z 2026-03-31T13:48:53Z A1 VABB-1 journalArticle Article A1 Bianca Swanckaert aut author 0000-0001-6036-6512 Nele Vande Velde aut author Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Luiza Bonin aut author ug_LA25 0000-0001-7123-0012 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Fermentation processes offer a sustainable way for green organic acid production such as lactic acid (LA). However, the recovery and purification of LA from fermentation broths is typically very energy demanding. The in-situ recovery of LA via migration of its lactate anion through an anion-exchange membrane (AEM), combining electrochemical systems with fermentation, offers a viable solution for this. In this work, sustainable silica-based nanofiber AEMs were developed with excellent ionic properties and a strong selectivity for organic acids. Starting from a tetraethoxysilane/chloropropyltriethoxysilane (TEOS/CPTES) sol-gel system, anion conductive nanofiber membranes were obtained via the alkylation of the Csingle bondCl moieties on the electrospun nanofibers with 1-methylimidazole, resulting in an ion-exchange capacity (IEC) of 1.9 ± 0.3 mmol g−1. Post-functionalization with octyltriethoxysilane (OTES) resulted in hydrophobic porous nanofiber AEMs with excellent separation properties. It was shown that the nanofiber AEM had an improved lactate selectivity compared to a commercially dense AEM in the presence of (selectivity of 8.8 vs. 1.1) with an energy consumption of 1.6 kWh kg−1 vs. 3.0 kWh kg−1 for lactate migration, proving its potential as a sustainable material for industrial applications. Technology and Engineering Industrial and Manufacturing Engineering Waste Management and Disposal General Materials Science Renewable Energy, Sustainability and the Environment silica nanofibers electrospinning anion-exchange membrane lactid acid recovery electrochemical treatment http://hdl.handle.net/1854/LU-01HEMWXV1H78WNWP4ME0QMM0H1 10.1016/j.susmat.2023.e00758 001149645900001 2214-9937 e00758 11 p. 2023 2214-9937 Elsevier BV 2023 38 2023 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/01HEMWXV1H78WNWP4ME0QMM0H1/file/01HEMXAZQ2KP3CCZDQ04FG19NG application/pdf restricted https://biblio.ugent.be/publication/01HEMWXV1H78WNWP4ME0QMM0H1/file/01HEQ6CG266YQ8T1K0T7FPFGRW application/pdf ug 01HEMWXV1H78WNWP4ME0QMM0H1 2023-11-07T12:43:12Z 2026-03-31T13:50:42Z A1 VABB-1 journalArticle Article A1 Margot De Spiegeleer aut author ug_UZGent 0000-0002-1088-7245 Vera Plekhova aut author ug_DI04 0000-0002-6109-7032 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Beata Pomian aut author ug_DI04 Varoon Singh aut author Kathleen Wijnant aut author ug_GE38 ug_UZGent 0000-0002-8242-4522 Kimberly De Windt aut author ug_DI04 0000-0002-9589-5112 Volter Paukku aut author 0000-0003-1194-4122 Alexander De Loof aut author Inge Gies aut author Nathalie Michels aut author ug_PP07 0000-0002-3069-7254 Stefaan De Henauw aut author ug_GE39 0000-0003-4141-5432 Marilyn De Graeve aut author ug_UGent 0000-0001-6916-401X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lynn Vanhaecke aut author ug_DI04 0000-0003-0400-2188 eng In recent years, ambient ionization mass spectrometry (AIMS) including laser ablation rapid evaporation IMS, has enabled direct biofluid metabolome analysis. AIMS procedures are, however, still hampered by both analytical, i.e., matrix effects, and practical, i.e., sample transport stability, drawbacks that impede metabolome coverage. In this study, we aimed at developing biofluid-specific metabolome sampling membranes (MetaSAMPs) that offer a directly applicable and stabilizing substrate for AIMS. Customized rectal, salivary, and urinary MetaSAMPs consisting of electrospun (nano)fibrous membranes of blended hydrophilic (polyvinylpyrrolidone and polyacrylonitrile) and lipophilic (polystyrene) polymers supported metabolite absorption, adsorption, and desorption. Moreover, MetaSAMP demonstrated superior metabolome coverage and transport stability compared to crude biofluid analysis and was successfully validated in two pediatric cohorts (MetaBEAse, n = 234 and OPERA, n = 101). By integrating anthropometric and (patho)physiological with MetaSAMP-AIMS metabolome data, we obtained substantial weight-driven predictions and clinical correlations. In conclusion, MetaSAMP holds great clinical application potential for on-the-spot metabolic health stratification. Medicine and Health Sciences Multidisciplinary ASSISTED LASER DESORPTION/IONIZATION IONIZATION MASS-SPECTROMETRY FECAL METABOLOME ION DESORPTION CHILDREN WEIGHT HUMANS INDEX http://hdl.handle.net/1854/LU-01H2WM9ZBP36BZ136NHBHN8D4N 10.1126/sciadv.ade9933 001009778100019 2375-2548 18 p. 2023 2375-2548 American Association for the Advancement of Science (AAAS) 2023 9 23 2023 Creative Commons Attribution-NonCommercial 4.0 International Public License (CC BY-NC 4.0) published https://biblio.ugent.be/publication/01H2WM9ZBP36BZ136NHBHN8D4N/file/01H8P1S93JHSFV05DPAVQWTRJE application/pdf ug 01H2WM9ZBP36BZ136NHBHN8D4N 2023-06-14T09:38:06Z 2026-03-31T11:35:06Z A1 VABB-1 journalArticle Article A1 Olivier Verschatse aut author 0000-0001-7732-6007 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Bianca Swanckaert aut author 0000-0001-6036-6512 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 eng Electrospun nanofiber membranes show high potential in various application fields (e.g., filtration, catalysis, and sensing). Nevertheless, knowledge of the mechanical behavior, and more specifically, the deformation of nanofiber membranes is still limited today which can complicate the appliance of nanofiber membranes in applications where they are mechanically loaded. In this paper, we, therefore, analyzed the mechanical behavior of polymeric nanofiber membranes with different fiber orientations (random and aligned) extensively. Polyamide 6 was used as a representative reference polymer for proof-of-concept. Mechanical tests show that all membranes have a coherent deformation behavior at the macroscale up to the point of fracture. Large variations in stiffness, ultimate strength, and ultimate strain were observed between membranes with different fiber orientations (Random: E-mod: 370 ± 34 MP; UTS: 38.5 ± 6.0 MPa; εmax: 30.0 ± 2.8%; Parallel aligned: E-mod: 753 ± 11 MPa; UTS: 55.4 ± 0.8 MPa; εmax: 12.0 ± 0.1%; Perpendicular aligned: E-mod: 24.1 ± 3.7 MPa; UTS:/; εmax: &gt;40%). This shows the versatility and tunability of the mechanical behavior of these nanofiber membranes. At the microscale, the fibrous structure results in deformation mechanisms that resist failure formation and progression when the membrane is mechanically loaded. This results in a high fracture resistance, even for pre-damaged membranes. Realignment of the fibers along the loading direction causes crack tip blunting, locally reinforcing the membrane. Technology and Engineering Polymers and Plastics General Chemistry mechanical behavior polymeric nanofiber membranes electrospinning in situ SEM analysis http://hdl.handle.net/1854/LU-01H0MBDNBC3GVJ7DECF5ASA3ZG 10.3390/polym15071630 000970151000001 2073-4360 1630 14 p. 2023 2073-4360 2023 15 7 2023 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01H0MBDNBC3GVJ7DECF5ASA3ZG/file/01H0MCSKH1EE4Z7DXR9HRGV6XP application/pdf ug 01H0MBDNBC3GVJ7DECF5ASA3ZG 2023-05-17T07:57:30Z 2026-03-31T14:59:23Z A1 VABB-1 journalArticle Article A1 Bianca Swanckaert aut author 0000-0001-6036-6512 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Korneel Rabaey aut author ug_LA25 0000-0001-8738-7778 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Luiza Bonin aut author ug_LA25 0000-0001-7123-0012 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Electrochemical treatments in (waste)water management show high potential in the global water resource crisis, but are often limited by the ion-exchange membrane (IEM) performance. Low chemical resistance and fouling are major issues in the development of next-generation IEMs. Sulfonated silica-based nanofiber cation-exchange membranes (CEMs) offer a promising solution to these issues due to their superior chemical resistance and self-cleaning properties. Via the direct electrospinning of a sol–gel solution starting from tetraethyl orthosilicate (TEOS) and 3-mercaptopropyl triethoxysilane (MPTES), nanofiber membranes with an ion-exchange capacity (IEC) of 1.3 mmol g−1 can be produced without the need of an additional matrix. The produced nanofiber CEM performs excellent in lab-scale electrochemical tests, with a resistance of 3.2 ± 0.4 *10-3 Ω m2 and a Coulombic efficiency of ± 70 % for the transport of Na+ using a current density of either 128 or 256 A/m−2. Furthermore, the nanofiber CEM shows outstanding resistance against strong acidic solutions and chlorine. After fouling of the membrane with CaCO3, the nanofiber CEM shows self-cleaning properties, eliminating the need for an additional cleaning step during usage. These results illustrate the excellent performance of the silica-based nanofiber CEM for industrial water treatment applications. Technology and Engineering Chemistry Filtration and Separation Analytical Chemistry Silica nanofibers Cation-exchange membrane Self-cleaning Fouling Electrochemical water treatment ADVANCED OXIDATION PROCESSES ION-EXCHANGE CERAMIC NANOFIBERS FUEL-CELL ELECTRODIALYSIS PERFORMANCE SELECTIVITY ENERGY TECHNOLOGIES TEMPERATURE http://hdl.handle.net/1854/LU-01GPJZY6YJZ4FEDGFG3CYS1R86 10.1016/j.seppur.2022.123001 000915828500001 1383-5866 1873-3794 123001 13 p. 2023 1383-5866 1873-3794 2023 309 2023 No license (in copyright) published https://biblio.ugent.be/publication/01GPJZY6YJZ4FEDGFG3CYS1R86/file/01GPK143G37DJPFQ0BPH3GMTVG application/pdf restricted https://biblio.ugent.be/publication/01GPJZY6YJZ4FEDGFG3CYS1R86/file/01GR3Z0PPWC0GZJ0S62R69HMHS application/pdf ug 01GPJZY6YJZ4FEDGFG3CYS1R86 2023-01-12T12:40:37Z 2026-03-31T14:59:32Z A1 VABB-1 journalArticle Article A1 Olivier Verschatse aut author 0000-0001-7732-6007 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 eng Digital image correlation (DIC) in combination with Scanning Electron Microscopy (SEM) and in-situ mechanical testing has great potential to study the micro-mechanical behavior of materials. Yet, the application of a high-quality speckle pattern for DIC remains challenging at this scale. Here, we present a versatile polymer particle-based speckle pattern with adjustable speckle size (0.17–1.04 μm) to cover a wide range of magnifications (500x to 5000x) in SEM. This speckle does not completely cover the surface, ensuring the visibility of deformations taking place in the studied object. The quality of the pattern is analyzed to determine the precision, noise, and correctness of the results obtained by SEM-DIC. Out-of-plane displacements are also considered. Depending on the choice of speckle size and imaging parameters, high quality SEM-DIC patterns were obtained. The measurable strain with this method ranges between 0.05% up to 100%. To illustrate the versatility of the speckling method, three different micromechanical test cases on polymer materials are presented. These showed that global and local deformation can clearly be visualized at different magnifications. Technology and Engineering Polymers and Plastics Organic Chemistry SEM-DIC Micromechanical testing Polymers Epoxy http://hdl.handle.net/1854/LU-01H83X216DE0QB0N98CDXHR419 10.1016/j.polymertesting.2023.108134 001031917800001 0142-9418 1873-2348 108134 13 p. 2023 0142-9418 1873-2348 2023 125 2023 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/01H83X216DE0QB0N98CDXHR419/file/01H83XVGAJNQPFW9WQHTW3BX8P application/pdf ug 01H83X216DE0QB0N98CDXHR419 2023-08-18T08:44:13Z 2026-03-31T15:07:36Z A1 VABB-1 journalArticle Article A1 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Lies De Keer aut author 0000-0003-2620-0046 Paul Van Steenberge aut author ug_TW11 0000-0001-6244-1299 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 eng Organosilica sol–gel synthesis is an important chemical process to deliver advanced functional network materials with applications such as wound dressings, solar cells and membranes. The chemical kinetics are although poorly understood, due to a lack of Arrhenius parameters and a focus on kinetic data mainly recorded at 298 K. The present work overcomes these shortcomings by reporting Arrhenius parameters for the most important reactions (hydrolysis and condensation), selecting tetraethyl orthosilicate (TEOS) crosslinking with hydrochloric acid (HCl) as reference case. A dedicated 29Si nuclear magnetic resonance (NMR) protocol applicable at any process temperature, with better relaxation delay optimization, peak identification, and an automated correction for further reaction during analysis at 298 K, is put forward. NMR is the analysis technique of choice to quantitatively follow the reactions in time due to its high specificity. This novel NMR-based protocol enables a more reliable quantification of the contribution of species that have been crosslinked i times (Q1-Q4). The tuned Arrhenius parameters, employing coupled matrixbased Monte Carlo simulations, can describe the isothermal kinetics for temperatures ranging from 298 to 328 K well. Moreover, these Arrhenius parameters are used to better understand the non-isothermal kinetics as utilized to synthesize sol/gel-like precursor solutions for applications including membrane production. Successful model validation under both isothermal and non-isothermal conditions is demonstrated, unlocking the door to a better understanding of orthosilicate crosslinking kinetics and associated material properties. Chemistry Technology and Engineering Industrial and Manufacturing Engineering General Chemical Engineering Environmental Chemistry General Chemistry http://hdl.handle.net/1854/LU-01GTBNMWFSAPBGCTD45HE8XXKG 10.1016/j.cej.2023.141701 000998974200001 1385-8947 1873-3212 141701 11 p. 2023 1385-8947 1873-3212 2023 461 2023 No license (in copyright) published https://biblio.ugent.be/publication/01GTBNMWFSAPBGCTD45HE8XXKG/file/01GTBPMCFB0BY8N0THEW70KBRQ application/pdf restricted https://biblio.ugent.be/publication/01GTBNMWFSAPBGCTD45HE8XXKG/file/01GTE7Y6BW76JFQZHXTGJY405D application/zip https://biblio.ugent.be/publication/01GTBNMWFSAPBGCTD45HE8XXKG/file/01GTE80E3P18S2KW7EAJHYSR2S application/zip ug 01GTBNMWFSAPBGCTD45HE8XXKG 2023-02-28T09:28:52Z 2026-03-31T15:06:08Z A1 VABB-1 journalArticle Article A1 Matteo Archimi aut author Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Jana Becelaere aut author 0000-0001-5024-3308 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Andrea Camposeo aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Dario Pisignano aut author eng The development of intelligent photonic systems made of stimuli-responsive materials, i.e., with features tunable and switchable by environmental signals, is gaining increasing attention. Here, the study reports on switchable optical gain based on complex arrays of nanofibers made of thermo-responsive poly(2-n-propyl-2-oxazoline), incorporating a blue-emitting chromophore. The fluorescent component endows the nanofibers with optical gain in addition to the moisture absorption capability of the polymer. Light amplification is found with temperature- and humidity-dependent excitation threshold. The threshold value is halved close to the polymer cloud point temperature, enabling reversible switching of the emission intensity upon temperature change. Waveguiding analysis by back-focal plane imaging on individual fibers allows the switching mechanisms to be rationalized, in terms of moisture sorption swelling-induced morphological changes. These responsive light-emitting nanofibers may find application in a novel class of lasers with dynamically-controlled properties, environmentally-switchable optoelectronics, and smart sensors. Technology and Engineering ELECTROSPUN NANOFIBERS HUMIDITY LASER POLY(2-OXAZOLINE)S TEMPERATURE EMISSION POLYMERS DESIGN hygroscopic polymers light-emitting nanofibers nanofiber networks nanofibers optical gain stimuli-responsive materials thermo-responsive polymers http://hdl.handle.net/1854/LU-01H9G348R6MCXQFG8P2Y3593Y4 10.1002/adom.202202056 000990628800001 2195-1071 2202056 9 p. 2023 2195-1071 2023 11 13 2023 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01H9G348R6MCXQFG8P2Y3593Y4/file/01H9G3KGREFMH4SMY12PHD12ET application/pdf https://biblio.ugent.be/publication/01H9G348R6MCXQFG8P2Y3593Y4/file/01HA9Z7R5D2CKAN153A2S6Y6HN application/pdf private ug 01H9G348R6MCXQFG8P2Y3593Y4 2023-09-04T12:36:53Z 2026-03-31T15:08:35Z A1 VABB-1 journalArticle Article A1 Lucas Schynkel aut author ug_TW11 0000-0003-2488-2303 Marguerite Meeremans aut author ug_DI04 0000-0003-1521-3378 Anna A. Meyer aut author Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Abdolrahman Omidinia-Anarkoli aut author Sandra Van Vlierberghe aut author ug_WE07 0000-0001-7688-1682 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Laura De Laporte aut author Catharina De Schauwer aut author ug_DI04 0000-0002-4475-7094 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Nanofibrous scaffolds are widely investigated for tendon tissue engineering due to their porous structure, high flexibility, and the ability to guide cells in a preferred direction. Previous research has shown that providing a microenvironment similar to in vivo settings improves tissue regeneration. Therefore, in this work, ingenious multicomponent nanoyarn scaffolds that mimic the fibrillar and tubular structures of tendons are developed for the first time through electrospinning and bundling nanoyarns followed by electrospinning of a nanofibrous shell around the bundle. Multicomponent nanoyarn scaffolds out of poly(ε-caprolactone) with varying porosity, density, and diameter were successfully produced by coelectrospinning with water-soluble poly(2-ethyl-2-oxazoline) as a sacrificial component. The diameter and fiber orientation of the nanoyarns were successfully tuned based on parameter-morphology models obtained by the design of experiments. Cyclic bending tests were performed, indicating that the flexibility of the multicomponent nanoyarn scaffolds depends on the morphology and can be tuned through controlling the number of nanoyarns in the bundle and the porosity. Indirect and direct cell culture tests using mouse and equine tendon cells revealed excellent cytocompatibility of the nanofibrous products and demonstrated the potential of the nanoyarns to guide the growing cells along the nanofiber direction, which is crucial for tendon tissue engineering. Technology and Engineering Biology and Life Sciences poly(2-ethyl-2-oxazoline) poly(ε-caprolactone) yarn electrospinning multicomponent nanoyarn scaffold bending behavior cell guidance nerve regeneration tendon tissue engineering TISSUE ALIGNMENT COLLAGEN INJURY FIBERS YARNS http://hdl.handle.net/1854/LU-01H95WH9WSP8NSXSS1NNGBZD5D 10.1021/acsami.3c08241 001061535500001 1944-8244 1944-8252 2023 1944-8244 1944-8252 2023 15 36 42113 43218 2023 No license (in copyright) published https://biblio.ugent.be/publication/01H95WH9WSP8NSXSS1NNGBZD5D/file/01H95X5BM82Y85DKVE2NMCAE8Q application/pdf restricted https://biblio.ugent.be/publication/01H95WH9WSP8NSXSS1NNGBZD5D/file/01H97TSQTF5KDDZFQZJA1DNDCT application/zip ug 01H95WH9WSP8NSXSS1NNGBZD5D 2023-08-31T13:29:15Z 2026-03-31T15:12:08Z A1 VABB-1 conference C3 Bianca Swanckaert aut author 0000-0001-6036-6512 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Korneel Rabaey aut author ug_LA25 0000-0001-8738-7778 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Luiza Bonin aut author ug_LA25 0000-0001-7123-0012 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 The Fiber Society's spring 2022 Conference eng Challenges in clean water availability have risen over the years, and especially third world countries are in great need of localised, low-cost water purification techniques, that make use of separation membranes. Electrochemical treatments in (waste)water management show high potential in the global water resource crisis, but are often limited by the performance of the ion-exchange membrane (IEM)[1]. Low chemical resistance and fouling are major issues in the development of the next generation IEMs. An interesting choice of material for IEMs is the use of nanofibers due to their outstanding ionic properties as a result of their specific morphology. Nanofiber membranes are known to have a large specific surface area, flexibility, high porosity and interconnected pores. Different strategies are applied for the production and structural design of these ion-exchange nanofiber membranes. Nanofibers with an ion-exchange functionality can be produced by either pre- or post-functionalization methods, combined with electrospinning. Depending on the application, these nanofiber mats can be used as such, or further membrane processing is possible to improve the dimensional stability, typically by adding a pore-filling matrix in between the nanofibers. By producing IEMs from hybrid nanofibrous membranes containing both organic and inorganic parts, a wide range of different membrane properties can be obtained by altering the molecular structure. This results in IEMs with high thermal and chemical resistance as well as tunability towards a.o. mechanical properties and hydrophobicity for the use in harsh environmental conditions. For example, sulfonated silica-based nanofiber cation-exchange membranes (CEMs) offer a promising solution to the current issues of IEMs, due to their superior chemical resistance and self-cleaning properties. Technology and Engineering http://hdl.handle.net/1854/LU-8755131 1 p. 2022 2022 2022 No license (in copyright) published https://biblio.ugent.be/publication/8755131/file/8755133 application/pdf https://www.mtm.kuleuven.be/english/events/fiber-society-conference-22 ug 8755131 2022-06-02T14:06:13Z 2026-03-31T13:24:29Z C3 conference C1 Daniele Finazzi aut author ug_UGent 0000-0002-6418-6823 Ruben Sevenois aut author ug_UGent 0000-0003-4977-2522 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Anastasios P. Vassilopoulos edt editor Véronique Michaud edt editor Composites Meet Sustainability : 20th European Conference on Composite Materials (ECCM20) eng Technology and Engineering thermoplastic composites SFRP glass/PA6 tensile tests DIC http://hdl.handle.net/1854/LU-01GJJ60MZE5SXVPMX7EBW5M7RY 9782970161400 2022 9782970161400 Composite Construction Laboratory (CCLab) 2022 1167 1174 2022 Creative Commons Attribution-NonCommercial 4.0 International Public License (CC BY-NC 4.0) published https://biblio.ugent.be/publication/01GJJ60MZE5SXVPMX7EBW5M7RY/file/01GJJ6A5JSBHYMQW52H45Z91MK application/pdf https://doi.org/10.5075/epfl-298799_978-2-9701614-0-0 ug 01GJJ60MZE5SXVPMX7EBW5M7RY 2022-11-23T12:04:47Z 2026-03-31T13:21:05Z C1 VABB-5 conference C1 Olivier Verschatse aut author 0000-0001-7732-6007 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Anastasios P. Vassilopoulos edt editor Véronique Michaud edt editor The 20th European Conference on Composite Materials (ECCM20) eng Technology and Engineering http://hdl.handle.net/1854/LU-8760447 9782970161400 2022 9782970161400 Composite Construction Laboratory (CCLab) 2022 1550 1557 2022 Creative Commons Attribution-NonCommercial 4.0 International Public License (CC BY-NC 4.0) published https://biblio.ugent.be/publication/8760447/file/8760452 application/pdf https://eccm20.org/ http://dx.doi.org/10.5075/epfl-298799_978-2-9701614-0-0 ug 8760447 2022-07-04T13:03:34Z 2026-03-31T13:21:07Z C1 VABB-5 conference C3 Olivier Verschatse aut author 0000-0001-7732-6007 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 18th European Mechanics of Materials Conference (EMMC18) eng Technology and Engineering http://hdl.handle.net/1854/LU-8755066 1 p. 2022 2022 2022 No license (in copyright) published https://biblio.ugent.be/publication/8755066/file/8755067 application/pdf restricted https://www.emmc18.org/event/4327a13b-b53e-4c7e-bd98-7b346b02b599/summary ug 8755066 2022-06-02T10:14:56Z 2026-03-31T13:20:38Z C3 conference C1 Muluneh G. Abebe aut author Alice De Corte aut author Gilles Rosolen aut author Jozefien Geltmeyer aut author 0000-0002-1281-2968 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Bjorn Maes aut author Said Zouhdi edt editor The 12th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META 2022) eng Personal radiative heat regulation by photonic engineered textiles can contribute to a decreased energy consumption in buildings by expanding the range of comfortable ambient conditions. Here, we propose dual-mode photonic designs (a static and a dynamic one), which modulate the emissivity to provide thermal regulation in both cold and hot environments. The first design is a Janus-yarn fabric that tunes statically via fabric flipping, while the second design is dynamic by utilizing a shape-memory polymer. Technology and Engineering http://hdl.handle.net/1854/LU-01GPJXP9DSZX9QRBTYW16K5M2F 2429-1390 2022 2429-1390 2022 742 743 2022 No license (in copyright) published https://biblio.ugent.be/publication/01GPJXP9DSZX9QRBTYW16K5M2F/file/01GPJYK57C80J21ZXW0FTZ4VQ7 application/pdf https://metaconferences.org/META/files/meta22_proceedings.pdf ug 01GPJXP9DSZX9QRBTYW16K5M2F 2023-01-12T12:01:20Z 2026-03-31T13:20:18Z C1 VABB-5 conference C3 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Geert Watson aut author ug_UGent 0000-0002-2324-4521 Yingrui Zhao aut author Maria Meledina aut author Pascal Van Der Voort aut author ug_WE06 0000-0002-1248-479X Damien Debecker aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Faculty of Engineering and Architecture Research Symposium 2022 (FEARS 2022) eng An important challenge in the valorization of CO2 and H2 into fuels is the development of a stable, reusable and easy to handle heterogeneous catalyst. Here, a silica nanofibrous membrane is investigated as carrier for Ru nanoparticles, themselves encapsulated inside the metal organic framework Cr-MIL-101. The catalytic membrane is investigated for the Sabatier methanation reaction. The direct electrospinning of a tetraorthosilicate sol-gel system results in a highly thermal resistant silica nanofibrous structure (up to 1100°C) with a large amount of pores between the fibers in the µm-range, allowing a high gas throughput with low pressure requirements. A straightforward dip-coating procedure of the carrier was used to obtain a Ru@MIL-101 functionalized silica nanofibrous veil, avoiding Ru clustering. The obtained catalytic membrane exhibited an apparent turnover frequency of 3257 h-1 at 250°C. This system therefore paves the way towards structured reactors for efficient CO2 hydrogenation processes. Technology and Engineering http://hdl.handle.net/1854/LU-01GMVB30NQ8WSC1CQYA0881359 10.5281/zenodo.7406152 1 p. 2022 2022 2022 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01GMVB30NQ8WSC1CQYA0881359/file/01GMXFTCQQ5TXSBCXY39W66JSH application/pdf ug 01GMVB30NQ8WSC1CQYA0881359 2022-12-21T21:58:01Z 2026-03-31T05:46:47Z C3 conference C3 Bianca Swanckaert aut author 0000-0001-6036-6512 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Korneel Rabaey aut author ug_LA25 0000-0001-8738-7778 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Luiza Bonin aut author ug_LA25 0000-0001-7123-0012 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Faculty of Engineering and Architecture Research Symposium 2022 (FEARS 2022) eng Challenges in clean water availability have risen over the years, and especially third world countries are in great need of localised, low-cost water purification techniques, that make use of separation membranes. Electrochemical treatments in (waste)water management show high potential in the global water resource crisis, but are often limited by the performance of the ion-exchange membrane (IEM). Low chemical resistance and fouling are major issues in the development of the next generation IEMs. An interesting choice of material for IEMs is the use of nanofibers due to their outstanding ionic properties as a result of their specific morphology. Nanofiber membranes are known to have a large specific surface area, flexibility, high porosity and interconnected pores. Different strategies are applied for the production and structural design of these ion-exchange nanofiber membranes. Nanofibers with an ion-exchange functionality can be produced by either pre- or post-functionalization methods, combined with electrospinning. Depending on the application, these nanofiber mats can be used as such, or further membrane processing is possible to improve the dimensional stability, typically by adding a pore-filling matrix in between the nanofibers. By producing IEMs from hybrid nanofibrous membranes containing both organic and inorganic parts, a wide range of different membrane properties can be obtained by altering the molecular structure. This results in IEMs with high thermal and chemical resistance as well as tunability towards a.o. mechanical properties and hydrophobicity for the use in harsh environmental conditions. For example, sulfonated silica-based nanofiber cation-exchange membranes (CEMs) offer a promising solution to the current issues of IEMs, due to their superior chemical resistance and self-cleaning properties. Technology and Engineering http://hdl.handle.net/1854/LU-01GMVB3AEXSKFSQX7AK4SGHAHR 10.5281/zenodo.7406026 1 p. 2022 2022 2022 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01GMVB3AEXSKFSQX7AK4SGHAHR/file/01GMXFFM2YTHKXGTV1Z66F9DMN application/pdf ug 01GMVB3AEXSKFSQX7AK4SGHAHR 2022-12-21T21:58:11Z 2026-03-31T05:46:47Z C3 conference C3 Jana Becelaere aut author 0000-0001-5024-3308 Elias Van Den Broeck aut author ug_UGent 0000-0002-9609-4333 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Chris Vervaet aut author ug_FW01 0000-0002-1291-6054 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Faculty of Engineering and Architecture Research Symposium 2022 (FEARS 2022) eng Over 2/3rd of all newly developed drugs are rendered useless because they don't dissolve in our stomach. Their high crystallinity prevents any active ingredients from entering our system. For this reason, increasing the aqueous solubility of poorly soluble drugs is highly researched. Solvent electrospinning of a solution of the flubendazole and poly(2-ethyl-2-oxazoline) is demonstrated to be a viable strategy to produce stable nanofibrous amorphous solid dispersions with ultrahigh drug-loadings (up to 55 wt\% flubendazole). Importantly, at such high drug loadings, the concentration of the polymer in the electrospinning solution has to be lowered below the concentration where it can be spun in absence of the drug as the interactions between the polymer and the drug result in increased solution viscosity. X-ray diffraction results and in vitro drug release studies confirm the remarkable amorphous stability and potential of this electrospinning formulation strategy by significantly increased drug solubility values and dissolution rates even after storing the formulation for one year. Technology and Engineering http://hdl.handle.net/1854/LU-01GMVB2VRSG40997DK22NHW2WK 10.5281/zenodo.7406006 1 p. 2022 2022 2022 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01GMVB2VRSG40997DK22NHW2WK/file/01GMXJADMDC5QAMNK6NYXRWWN3 application/pdf ug 01GMVB2VRSG40997DK22NHW2WK 2022-12-21T21:57:56Z 2026-03-31T06:53:17Z C3 conference C3 Vera Plekhova aut author ug_DI04 0000-0002-6109-7032 Margot De Spiegeleer aut author ug_UZGent 0000-0002-1088-7245 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Beata Pomian aut author ug_DI04 Varoon Singh aut author ug_UGent Ellen De Paepe aut author ug_DI04 0000-0002-6197-5384 Kathleen Wijnant aut author ug_GE38 ug_UZGent 0000-0002-8242-4522 Inge Gies aut author Nathalie Michels aut author ug_PP07 0000-0002-3069-7254 Marilyn De Graeve aut author ug_UGent 0000-0001-6916-401X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lynn Vanhaecke aut author ug_DI04 0000-0003-0400-2188 The 70th ASMS Conference eng INTRODUCTION With the current development of ambient ionization platforms, sample analysis procedures are becoming faster and easier. And yet, sacrificing sample preparation and separation techniques in favor of short analytical run times allows matrix effects to resurface unabated, leading to a decrease in sensitivity accompanied by repeatability and reproducibility issues. In this study, we introduce electrospun polymeric fibrous membranes (MetaSAMPs) for the sampling and direct analysis of biofluids using the established laser-assisted rapid evaporative mass spectrometry (LA-REIMS) methodology (Plekhova et al., Nat.Prot., 2021). By applying customized MetaSAMPs® as a sampling tool and direct substrate for LA-REIMS analysis, we aim to increase the short- and long-term preservation of the metabolome, reduce the impact of macromolecules during analysis while improving metabolome coverage and reproducibility. METHODS Polymeric fibrous sampling membranes (MetaSAMP) were developed by electrospinning with their composition individually optimized for three commonly addressed in light of clinical biochemistry biofluids, i.e. stool, urine and saliva. During validation experiments, pooled biological samples were analyzed as such or impregnated on the MetaSAMP® membranes to compare LA-REIMS signal intensity, metabolome coverage, and reproducibility. Next, the short- and long-term stability were examined by storing the impregnated MetaSAMP® membranes and crude biofluids at 4°C and 20° for 48 hours, or at -20°C and -80°C for up to six weeks. Finally, the clinical applicability of the three biofluid-specific MetaSAMPs® was verified in different pediatric cohorts, i.e. OPERA (n = 95, saliva, 6-16y) and MetaBEAse (n = 76, stool, 6-12y) studying adolescent and childhood obesity and CMA (n = 70, urine, 6 months-3y) studying infant food allergy. PRELIMINARY DATA Based on metabolome coverage, reproducibility and fiber network quality, the optimal urinary MetaSAMP® composition was determined to be a blend of 70/20/10 Polystyrene (PS)/Polyvinylpyrrolidone(PVP)/Polyacrylonitrile(PAN)%, enabling extraction of a broad range of metabolites (log P = -5 to 13). The addition of an outer 10% (w/w) nanofiber PAN coating promoted urine absorption while simultaneously acting as a filter to reduce macromolecule biofouling. Similarly, the optimal compositions of the salivary and rectal MetaSAMPs® were determined as 90/10 PS/PVP and 60/40 PVP/PS, respectively, both with PAN coating. In subsequent validation experiments, impregnated MetaSAMPs showed a higher number of detected metabolic features compared to the crude biofluids whilst maintaining good repeatability with 97%, 66% and 65% of features ≤ 30% CV threshold for the urinary, salivary and rectal MetaSAMP®. After 48h storage, mimicking the maximum transportation time from the patient's home or physician’s office to the laboratory, more metabolic features showed better stability when stored impregnated on the samplers as compared to the raw biofluids, as estimated by the interclass correlation coefficients (ICC). For example, 107 and 732 features detected in urine after storage at 20°C and 4°C, respectively, correlated well between 0 and 48h (ICC > 0.4), while urine impregnated on the MetaSAMP stored at the same conditions generated 1597 and 1851 features with ICCs > 0.4. A similar trend was observed following 6 weeks of storage, as urinary MetaSAMPs still retained 1206 highly correlated features at -20°C, while in urine only 780 remained stable. Lastly, the clinical validation in three independent cohorts showed better predictive power of multivariate OPLS-DA models based on metabolic fingerprints obtained with the MetaSAMPs® , e.g. Q2Y= 0.65 and p-value = 1.3e-11 for urinary MetaSAMP® whereas Q2 Y = 0.52 and p-value = 3.6e-7 for the analysis of crude urinary samples. NOVEL ASPECT Polymeric nanofibrous samplers (MetaSAMPs®) promote biofluid metabolome stability during storage while increasing metabolome coverage and reproducibility following LA-REIMS-based metabotyping. Technology and Engineering Veterinary Sciences Medicine and Health Sciences http://hdl.handle.net/1854/LU-01GSSEWPWEM0F5HNB4VDH4VBZ4 3 p. 2022 Minneapolis, MN, USA 2022 2022 No license (in copyright) published https://biblio.ugent.be/publication/01GSSEWPWEM0F5HNB4VDH4VBZ4/file/01GSSGGS7GA44X1E5QB25BK65N application/pdf restricted ug 01GSSEWPWEM0F5HNB4VDH4VBZ4 2023-02-21T07:44:29Z 2026-03-31T08:19:32Z C3 conference C3 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Damien Debecker aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 The Fiber Society's spring 2022 Conference eng Chemistry Nanofibers Electrospinning Silica Separation Catalysis http://hdl.handle.net/1854/LU-8759714 1 p. 2022 2022 2022 No license (in copyright) published https://biblio.ugent.be/publication/8759714/file/8759716 application/vnd.openxmlformats-officedocument.wordprocessingml.document https://www.thefibersociety.org/Portals/0/Past%2520Conferences/2022_Spring_ConferenceProceedingsLeuven.pdf?ver=2022-08-09-181450-453 https://www.mtm.kuleuven.be/english/events/fiber-society-conference-22 ug 8759714 2022-06-30T06:45:05Z 2026-03-31T13:20:10Z C3 conference C1 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Bianca Swanckaert aut author 0000-0001-6036-6512 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Koen Deventer aut author ug_GE32 0000-0001-8038-1824 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 AUTEX 2022 : Passion for innovation eng Technology and Engineering http://hdl.handle.net/1854/LU-8759717 10.34658/9788366741751.63 9788366741751 2022 9788366741751 Lodz University of Technology Press 2022 301 305 2022 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8759717/file/8759719 application/pdf https://www.autex2022.com/ ug 8759717 2022-06-30T06:52:13Z 2026-03-31T05:14:01Z C1 VABB-5 journalArticle Article A1 Sander Rijckaert aut author 0000-0003-4447-0867 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Ludwig Cardon aut author ug_TW11 0000-0002-4019-612X Matthieu Boone aut author ug_WE05 0000-0002-5478-4141 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Recent development in the field of additive manufacturing, also known as three-dimensional (3D) printing, has allowed for the incorporation of continuous fiber reinforcement into 3D-printed polymer parts. These fiber reinforcements allow for the improvement of the mechanical properties, but compared to traditionally produced composite materials, the fiber volume fraction often remains low. This study aims to evaluate the in-nozzle impregnation of continuous aramid fiber reinforcement with glycol-modified polyethylene terephthalate (PETG) using a modified, low-cost, tabletop 3D printer. We analyze how dimensional printing parameters such as layer height and line width affect the fiber volume fraction and fiber dispersion in printed composites. By varying these parameters, unidirectional specimens are printed that have an inner structure going from an array-like to a continuous layered-like structure with fiber loading between 20 and 45 vol%. The inner structure was analyzed by optical microscopy and Computed Tomography (µCT), achieving new insights into the structural composition of printed composites. The printed composites show good fiber alignment and the tensile modulus in the fiber direction increased from 2.2 GPa (non-reinforced) to 33 GPa (45 vol%), while the flexural modulus in the fiber direction increased from 1.6 GPa (non-reinforced) to 27 GPa (45 vol%). The continuous 3D reinforced specimens have quality and properties in the range of traditional composite materials produced by hand lay-up techniques, far exceeding the performance of typical bulk 3D-printed polymers. Hence, this technique has potential for the low-cost additive manufacturing of small, intricate parts with substantial mechanical performance, or parts of which only a small number is needed. Technology and Engineering Polymers and Plastics General Chemistry additive manufacturing FFF FDM mechanical testing microscopy low-cost CONTINUOUS CARBON-FIBER MECHANICAL-PROPERTIES PLY THICKNESS SURFACE-TREATMENT ACID COMPOSITES STRENGTH TENSILE GLASS IMPREGNATION PERFORMANCE http://hdl.handle.net/1854/LU-8733959 10.3390/polym14020298 000760433900001 2073-4360 298 16 p. 2022 2073-4360 2022 14 2 2022 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8733959/file/8733961 application/pdf https://biblio.ugent.be/publication/8733959/file/8733962 application/pdf ug 8733959 2022-01-13T08:38:14Z 2026-03-31T12:57:57Z A1 VABB-1 journalArticle Review A1 Bianca Swanckaert aut author 0000-0001-6036-6512 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Korneel Rabaey aut author ug_LA25 0000-0001-8738-7778 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Luiza Bonin aut author ug_LA25 0000-0001-7123-0012 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng In view of today's challenges in clean water depletion and wastewater management, electrochemical water treatment processes are increasingly applied for e.g. desalination of brackish water, recovery of resources and energy production from waste streams, and disinfection of wastewater. These electrochemical processes typically make use of an ion-exchange membrane in between the anode and cathode. The choice of material for this membrane is crucial for the performance of the cell and often its performance is the key bottleneck. Over the last decade, research has been focused on the production of ion-exchange nanofibers as membrane material due to their outstanding ionic properties as a result of their specific morphology. Nanofiber membranes are known to have a large specific surface area, flexibility, high porosity and interconnected pores. Different strategies are applied for the production and structural design of these ion-exchange nanofiber membranes, which are discussed in this review. Nanofibers with an ion-exchange functionality can be produced by either pre-or postfunctionalization methods, combined with electrospinning. Depending on the application, these nanofiber mats can be used as such, or further membrane processing is possible to improve the dimensional stability, typically by adding a pore-filling matrix in between the nanofibers. Eventually, the current state of research on ion-exchange nanofibers in electrochemical separation and degradation applications is discussed. The many examples highlighted in this review prove the potential of nanofibers as ion-exchangers and provide insights for future research in this area. Technology and Engineering Chemistry Ion-exchange membranes Nanofibers Electrospinning Electrochemical separation Wastewater treatment WASTE-WATER TREATMENT MICROBIAL FUEL-CELL ADVANCED OXIDATION PROCESSES COMPOSITE MEMBRANES BIOELECTROCHEMICAL SYSTEMS ELECTROLYTE MEMBRANES POLYMER NANOFIBERS BIPOLAR MEMBRANE ELECTROSPUN NANOFIBERS SCALE ELECTRODIALYSIS http://hdl.handle.net/1854/LU-8735807 10.1016/j.seppur.2022.120529 000780699500001 1383-5866 1873-3794 120529 26 p. 2022 1383-5866 1873-3794 2022 287 2022 No license (in copyright) published https://biblio.ugent.be/publication/8735807/file/8735833 application/pdf restricted https://biblio.ugent.be/publication/8735807/file/8743627 application/pdf ug 8735807 2022-01-26T08:14:28Z 2026-03-31T13:45:22Z A1 VABB-1 journalArticle Article A1 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Ronald Merckx aut author 0000-0002-2867-0888 Jana Becelaere aut author 0000-0001-5024-3308 Serge Rijssegem aut author Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Colorimetric nanofibers provide visual, easy-to-interpret sensors for personal use as well as advanced applications. The potential of 2-n-butyl-2-oxazoline (B) and 2-ethyl-2-oxazoline (E) statistical copolymers as a universal, versatile support platform for nanofibrous halochromic sensor design is demonstrated. These polymers are electrospinnable from eco-friendly solvent systems, while wettability, moist adsorption capacity, and water-solubility of the membranes can be easily tuned by changing the B/E monomer ratio, ensuring wide applicability. The halochromic sensing functionality is introduced by incorporating the alizarin yellow R (AYR) chromophore, which is covalently modified with an ethyl ester-group or a short poly(2-n-butyl-2-oxazoline) chain, which is demonstrated to simultaneously prevent dye-leaching and allows tuning of the halochromic pH-sensing window. The colorimetric nanofibrous sensors reversibly respond toward aqueous solutions of different pH, (hydrochloric) acid and alkaline (ammonia) vapors, and several biogenic amines with detection limits as low as 5 ppb. Tunability of sensor responsivity, sensitivity, and pKa via manipulation of dye–polymer interactions, determined by support polymer structure and semi-crystallinity, as well as the chain length of the AYR-modified polymer, are discussed. Preliminary proof-of-principle studies indicate the potential of the developed sensors for sub-ppm biogenic amine vapor detection, which may serve as the basis for future applications in food packaging or breath analysis. Technology and Engineering alizarin yellow R colorimetric sensors eco-friendly electrospinning poly(2-oxazoline)s statistical copolymers INDUCED PKA SHIFTS PHOTOPHYSICAL PROPERTIES COLOR PK(A) POLY(2-OXAZOLINE)S RED POLYPENTAPEPTIDES SPECTRA PROTEIN PROBES http://hdl.handle.net/1854/LU-8719362 10.1002/adfm.202106859 000693572100001 1616-301X 1616-3028 2106859 14 p. 2022 1616-301X 1616-3028 2022 32 1 2022 No license (in copyright) published https://biblio.ugent.be/publication/8719362/file/8719364 application/pdf https://biblio.ugent.be/publication/8719362/file/8734683 application/pdf restricted ug 8719362 2021-09-06T14:02:31Z 2026-03-31T13:48:49Z A1 VABB-1 journalArticle Article A1 Kim Phan aut author ug_UGent 0000-0001-8660-5251 Elias Van Den Broeck aut author ug_UGent 0000-0002-9609-4333 Katleen Raes aut author ug_LA23 0000-0003-2382-120X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Steven De Meester aut author ug_LA24 0000-0002-5246-3918 eng Earth and Environmental Sciences Chemistry Materials Chemistry Physical and Theoretical Chemistry Spectroscopy Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Anthocyanins COSMO-RS Density Functional Theory (DFT) Extraction Solvent ULTRASOUND-ASSISTED EXTRACTION FREE-ENERGIES RED CABBAGE COSMO-RS SOLUBILITY OPTIMIZATION http://hdl.handle.net/1854/LU-8739151 10.1016/j.molliq.2022.118606 000754540700019 0167-7322 1873-3166 118606 12 p. 2022 0167-7322 1873-3166 2022 351 2022 No license (in copyright) published https://biblio.ugent.be/publication/8739151/file/8740223 application/pdf restricted ug 8739151 2022-02-04T15:18:41Z 2026-03-31T11:31:47Z A1 VABB-1 conference C3 Olivier Verschatse aut author 0000-0001-7732-6007 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Faculty of Engineering and Architecture Research Symposium 2022 (FEARS 2022) eng For every project or application, it is important to select a material that exhibits the desired mechanical properties. To be able to do so, the performance of multiple materials needs to be determined via mechanical testing. Here, we present the ability to combine mechanical tests with microstructural observations, which gives new insight into the microscale deformation and fracture mechanisms present in materials. Thanks to Scanning Electron Microscopy (SEM) during testing, we are able to perform in-situ visualization of the microstructure of the material and how it responds to mechanical loads. SEM offers a high resolution, a wide range of magnification, and a higher field of depth than traditional optical microscopic techniques. With these new insights, materials can be tuned more efficiently towards their specific applications. Technology and Engineering http://hdl.handle.net/1854/LU-01GMVB42YZ7M41FSKMW0A8VYYD 10.5281/zenodo.7405881 1 p. 2022 2022 2022 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01GMVB42YZ7M41FSKMW0A8VYYD/file/01GMX60QGTNKBT0MEZ5DQV3EB9 application/pdf ug 01GMVB42YZ7M41FSKMW0A8VYYD 2022-12-21T21:58:36Z 2026-03-31T14:57:11Z C3 conference C3 Olivier Verschatse aut author 0000-0001-7732-6007 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 The Fiber Society spring 2022 conference eng Technology and Engineering http://hdl.handle.net/1854/LU-8755068 1 p. 2022 2022 2022 No license (in copyright) published https://biblio.ugent.be/publication/8755068/file/8755070 application/pdf ug 8755068 2022-06-02T10:19:13Z 2026-03-31T14:57:11Z C3 journalArticle Article A1 Jana Becelaere aut author 0000-0001-5024-3308 Elias Van Den Broeck aut author ug_UGent 0000-0002-9609-4333 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Valérie Vanhoorne aut author ug_FW01 0000-0003-4249-3408 Joachim Van Guyse aut author Maarten Vergaelen aut author ug_UGent Sander Borgmans aut author ug_TW17 0000-0002-9187-4293 Karolien Creemers aut author Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Chris Vervaet aut author ug_FW01 0000-0002-1291-6054 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng In this work, an important step is taken towards the bioavailability improvement of poorly water-soluble drugs, such as flubendazole (Flu), posing a challenge in the current development of many novel oral-administrable therapeutics. Solvent electrospinning of a solution of the drug and poly (2-ethyl-2-oxazoline) (PEtOx) is demonstrated to be a viable strategy to produce stable nanofibrous amorphous solid dispersions (ASDs) with ultrahigh drug-loadings (up to 55 wt% Flu) and long-term stability (at least one year). Importantly, at such high drug loadings, the concentration of the polymer in the electrospinning solution has to be lowered below the concentration where it can be spun in absence of the drug as the interactions between the polymer and the drug result in increased solution viscosity. A combination of experimental analysis and molecular dynamics simula- tions revealed that this formulation strategy provides strong, dominant and highly stable hydrogen bonds be- tween the polymer and the drug, which is crucial to obtain the high drug-loadings and to preserve the long-term amorphous character of the ASDs upon storage. In vitro drug release studies confirm the remarkable potential of this electrospinning formulation strategy by significantly increased drug solubility values and dissolution rates (respectively tripled and quadrupled compared to the crystalline drug), even after storing the formulation for one year. Technology and Engineering Chemistry Medicine and Health Sciences Amorphous solid dispersions Solvent electrospinning Molecular dynamics Computational chemistry Poly(2-ethyl-2-oxazoline) Flubendazole http://hdl.handle.net/1854/LU-8768650 10.1016/j.jconrel.2022.09.028 000877018500001 0168-3659 1873-4995 2022 0168-3659 1873-4995 2022 351 123 136 2022 No license (in copyright) published https://biblio.ugent.be/publication/8768650/file/8768653 application/pdf restricted https://biblio.ugent.be/publication/8768650/file/01GK6ED97DTWYFQEP81XSNQAV9 application/pdf https://biblio.ugent.be/publication/8768650/file/01GK6EEF3B9YDKM1JC39E2N4MB application/pdf ug 8768650 2022-10-03T14:17:18Z 2026-03-31T14:24:31Z A1 VABB-1 conference C3 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Faculty of Engineering and Architecture Research Symposium 2022 (FEARS 2022) eng Silica nanofibrous membranes are flexible, light-weight and porous materials that showcase excellent thermal and chemical resistance. However, the production via a combination of sol-gel synthesis and electrospinning depends on many factors of which the influence is not completely understood. In this work, we investigate the link between the viscosity and the electrospinnability of the tetraethylorthosilicate (TEOS) based spinning solution as a first step in linking the different scales in the process. The viscosity of the silica sol has a clear effect on the behavior of the Taylor cone and hence on the stability of the electrospinning process. Exploiting these insights is of great importance for future chemically driven tuning of silica nanofibrous membranes. Technology and Engineering http://hdl.handle.net/1854/LU-01GMVB2854B8827YKTB6VNSYM7 10.5281/zenodo.7400772 1 p. 2022 2022 2022 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/01GMVB2854B8827YKTB6VNSYM7/file/01GMXMEBX4JSJDC9QT9G9VJ6DK application/pdf ug 01GMVB2854B8827YKTB6VNSYM7 2022-12-21T21:57:36Z 2026-03-31T15:13:27Z C3 conference C1 Sofie Verschraegen aut author ug_TW11 0000-0002-6164-3662 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Chemical Technology Symposium 2022 (CTS-2022) eng Electrospinning of silica sols into nanofibers is not straightforward as the effect of multiple influencing synthesis and process factors is not completely understood. This limits the applicability of silica nanofibrous membranes in fields such as catalysis, sensors, filtration and separation. In this work, the link between an important solution parameter (viscosity) and the electrospinnability of the tetraethylorthosilicate (TEOS) based silica spinning solution is investigated as a first step in linking the different scales in the process. Sol-gel synthesis, electrospinning and state-of-the-art imaging techniques are combined leading to novel insights into the direct electrospinning of silica sols. Technology and Engineering Chemistry http://hdl.handle.net/1854/LU-01K2MN0EKX9GM6AH2NVS29368N 9789464664751 5 p. 2022 9789464664751 2022 2022 No license (in copyright) published https://biblio.ugent.be/publication/01K2MN0EKX9GM6AH2NVS29368N/file/01K2MN914E3QEC133RRSTZ88AX application/pdf ug 01K2MN0EKX9GM6AH2NVS29368N 2025-08-14T16:01:04Z 2026-03-31T15:13:28Z C1 VABB-5 journalArticle Article A1 Babs Van de Voorde aut author Berna Şensu aut author Lobke De Vos aut author ug_WE07 ug_FW02 Robin Colenbier aut author Havva Başkan aut author Jozefien Geltmeyer aut author 0000-0002-1281-2968 Laurens Parmentier aut author ug_WE07 0000-0002-5849-3042 Lenny Van Daele aut author ug_WE07 ug_LA25 0000-0002-6335-395X Ruslan Dmitriev aut author ug_GE38 0000-0002-0347-8718 Lincy Pyl aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Sandra Van Vlierberghe aut author ug_WE07 0000-0001-7688-1682 eng Recently, poly(nonamethylene terephthalate) (PAT((n=9))) and poly(decamethylene terephthalate) (PAT((n=10))) gained increasing interest since it was reported to exhibit enhanced endothelial cell adhesion and viability compared to other poly(alkylene terephthalate) (PAT) analogues. Enhanced endothelial cell interactivity is of particular interest when targeting cardiovascular applications, more specifically, for creating synthetic vascular bypass grafts. In this study, the potential of PAT((n=10)) to be applied as synthetic bypass graft has been further investigated. After a thorough physico-chemical characterization of the synthesized PAT((n=10)), microsized fibers were processed via electrospinning. In a first part, the polymer-related parameters were investigated and optimized to obtain uniform beadless fibers. By changing the solution composition and device set-up, various fiber morphologies (i.e. random, aligned and porous fibers) were obtained and subjected to an in vitro biological evaluation with Human Umbilical Vein Endothelial Cells (HUVECs), while exploiting a clinically used synthetic graft (i.e. Dacron (R)) as benchmark. It was shown that the cells seeded onto all PAT((n=10)) fibers exhibited a superior metabolic activity compared to Dacron after 7 days of culture, while aligned and porous fibers had a beneficial effect on the survival of HUVECs. This study is a first step towards the application of PATs as novel cardiovascular bypass graft, fabricated via electrospinning. Chemistry Organic Chemistry Polymers and Plastics General Physics and Astronomy Materials Chemistry Poly(decamethylene terephthalate) Electrospinning Human Umbilical Vein Endothelial Cells Live dead staining MOLECULAR-WEIGHT POLYMER NANOFIBERS SCAFFOLDS BIOCOMPATIBILITY DEGRADATION BEHAVIOR DENSITY http://hdl.handle.net/1854/LU-8735806 10.1016/j.eurpolymj.2022.111003 000779651000005 0014-3057 1873-1945 111003 10 p. 2022 0014-3057 1873-1945 2022 165 2022 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/8735806/file/8747297 application/pdf restricted https://biblio.ugent.be/publication/8735806/file/01KATN43KS0WJXY42SH7D54F3R application/vnd.openxmlformats-officedocument.wordprocessingml.document ug 8735806 2022-01-26T08:13:58Z 2026-03-31T15:13:30Z A1 VABB-1 journalArticle Article A1 Lies De Keer aut author 0000-0003-2620-0046 Karsu I. Kilic aut author Paul Van Steenberge aut author ug_TW11 0000-0001-6244-1299 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Daniel Kodura aut author Hendrik Frisch aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Marie-Françoise Reyniers aut author ug_TW11 Christopher Barner-Kowollik aut author Reinhold H. Dauskardt aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 eng A computational platform describing the spatial and temporal interactions of monomers during the formation of network polymers provides structure-property relationships that are used to synthesize 3D network polymers with tailored functionalities. The three-dimensional arrangement of natural and synthetic network materials determines their application range. Control over the real-time incorporation of each building block and functional group is desired to regulate the macroscopic properties of the material from the molecular level onwards. Here we report an approach combining kinetic Monte Carlo and molecular dynamics simulations that chemically and physically predicts the interactions between building blocks in time and in space for the entire formation process of three-dimensional networks. This framework takes into account variations in inter- and intramolecular chemical reactivity, diffusivity, segmental compositions, branch/network point locations and defects. From the kinetic and three-dimensional structural information gathered, we construct structure-property relationships based on molecular descriptors such as pore size or dangling chain distribution and differentiate ideal from non-ideal structural elements. We validate such relationships by synthesizing organosilica, epoxy-amine and Diels-Alder networks with tailored properties and functions, further demonstrating the broad applicability of the platform. Technology and Engineering Mechanical Engineering General Materials Science Mechanics of Materials General Chemistry Condensed Matter Physics http://hdl.handle.net/1854/LU-8715793 10.1038/s41563-021-01040-0 000667593300001 1476-1122 1476-4660 2021 1476-1122 1476-4660 2021 20 10 1422 1430 2021 No license (in copyright) published https://biblio.ugent.be/publication/8715793/file/8735634 application/pdf restricted https://biblio.ugent.be/publication/8715793/file/8739785 application/pdf ug 8715793 2021-07-13T08:42:45Z 2026-03-31T13:19:32Z A1 VABB-1 conference C3 Brecht Tomme aut author ug_TW11 0000-0001-7765-3059 Valentina Trovato aut author Jozefien Geltmeyer aut author 0000-0002-1281-2968 Giuseppe Rosace aut author Daniele Piga aut author Barbara Ferrari aut author Andrea Cataldi aut author Steven De Meester aut author ug_LA24 0000-0002-5246-3918 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Fernando Ferreira edt editor A. M. Rocha edt editor R. Fangueiro edt editor A. Marques edt editor A. Zille edt editor AUTEX 2021 - 20th World Textile Conference eng For ecological, economic, and health reasons, it is important to mechanically recycle waste acrylic fabrics originating from outdoor applications. These are not currently recycled due to the presence of harmful finishes on the waste fabrics, that interfere with the recycling process, reduce the quality of the recycled product, and pose health risks. Through a combination of confidential washing, hydrolysis and physical treatments, all the finishing chemicals on waste, outdoor acrylic fabrics can be removed by at least 90%, thus enabling the mechanical recycling process. Technology and Engineering Acrylic outdoor fabrics mechanical recycling finishes hydrolysis http://hdl.handle.net/1854/LU-8720913 9789895480869 307 2021 9789895480869 AUTEX 2021 496 497 2021 No license (in copyright) published https://biblio.ugent.be/publication/8720913/file/8720957 application/pdf restricted https://autex2021.org/home ug 8720913 2021-09-21T14:19:16Z 2026-03-31T13:21:01Z C3 conference C1 Sisi Wang aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Rudinei Fiorio aut author ug_UGent Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ludwig Cardon aut author ug_TW11 0000-0002-4019-612X International Polymer Process Innovation Conference 2021 (PPI-2021) eng Chemistry Technology and Engineering Bio-based blend annealing printing parameter morphology mechanical property http://hdl.handle.net/1854/LU-8741906 9789464517811 2021 9789464517811 Ghent Ghent University 2021 21 23 2021 No license (in copyright) published https://biblio.ugent.be/publication/8741906/file/8741908 application/pdf restricted https://pmi.ugent.be/ ug 8741906 2022-02-21T13:35:12Z 2026-03-31T13:20:38Z C1 VABB-5 conference C3 Olivier Verschatse aut author 0000-0001-7732-6007 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 HyFiSyn conference eng Technology and Engineering http://hdl.handle.net/1854/LU-8721007 2 p. 2021 2021 2021 No license (in copyright) published https://biblio.ugent.be/publication/8721007/file/8721012 application/pdf restricted https://www.hyfisyn.eu/school-conference/about ug 8721007 2021-09-22T07:29:40Z 2026-03-31T13:20:38Z C3 conference C3 Olivier Verschatse aut author 0000-0001-7732-6007 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Fernando Ferreira edt editor A. M. Rocha edt editor R. Fangueiro edt editor A. Marques edt editor A. Zille edt editor AUTEX 2021 - 20th World Textile Conference eng Technology and Engineering http://hdl.handle.net/1854/LU-8720995 9789895480869 262 2021 9789895480869 AUTEX 2021 420 421 2021 No license (in copyright) published https://biblio.ugent.be/publication/8720995/file/8720999 application/pdf restricted https://autex2021.org/home ug 8720995 2021-09-22T07:06:05Z 2026-03-31T13:20:18Z C3 journalArticle Review A1 Kim Phan aut author ug_UGent 0000-0001-8660-5251 Katleen Raes aut author ug_LA23 0000-0003-2382-120X Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Martijn Roosen aut author 0000-0002-9551-4658 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Steven De Meester aut author ug_LA24 0000-0002-5246-3918 eng Agriculture and Food Sciences Chemistry Natural Dye Anthocyanins Quinones Carotenoids Life Cycle Assessment (LCA) Organic Waste Valorization RUBIA-TINCTORUM-L. JUGLANS-REGIA L. CARBON-DIOXIDE EXTRACTION SOLID-PHASE EXTRACTION BY-PRODUCTS DYEING PROPERTIES COTTON FABRICS LIGHT FASTNESS ANTIBACTERIAL ACTIVITY ULTRASONIC EXTRACTION http://hdl.handle.net/1854/LU-8703361 10.1016/j.jclepro.2021.126920 000646601400014 0959-6526 1879-1786 126920 26 p. 2021 0959-6526 1879-1786 2021 301 2021 No license (in copyright) published https://biblio.ugent.be/publication/8703361/file/8704033 application/pdf restricted ug 8703361 2021-04-07T13:26:37Z 2026-03-31T13:38:04Z A1 VABB-1 journalArticle Article A1 Kim Phan aut author ug_UGent 0000-0001-8660-5251 Steven De Meester aut author ug_LA24 0000-0002-5246-3918 Katleen Raes aut author ug_LA23 0000-0003-2382-120X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X eng Anthocyanins and pyranoanthocyanins are flavonoids that are present in various food products (e.g., fruit, vegetables, wine, etc.). The large chemical diversity amongst these molecules leads to compound-specific properties such as color and stability towards external conditions. These properties are also attractive for food and non-food applications. The photophysical experimental characterization is not easy as this generally demands advanced analytical techniques along with optimized separation procedures. Molecular modeling can provide insights into the fundamental understanding of the photophysical properties of these compounds in a uniform way for a broad set of compounds. However, the current literature is quite fragmented on this topic. Herein, a large set of 140 naturally derived anthocyanins was evaluated in a systematic way with three functionals (B3LYP, PBE0, and CAM-B3LYP). The accuracy of these functionals was determined with experimental literature lambda(max,vis) values. In addition to lambda(max,vis) values, time-dependent (TD)-DFT calculations also provided oscillator strengths, molar absorption coefficients, and orbital energies, which define whether specific natural anthocyanin-based compounds can be deployed in food and non-food applications such as food additives/colorants, textile dyeing, analytical standards, and dye-sensitized solar cells (DSSCs). Chemistry General Chemistry anthocyanins pyranoanthocyanins time-dependent density functional theory UV Vis spectroscopy http://hdl.handle.net/1854/LU-8693084 10.1002/chem.202004639 000624567100001 0947-6539 1521-3765 2021 0947-6539 1521-3765 2021 27 19 5956 5971 2021 No license (in copyright) published https://biblio.ugent.be/publication/8693084/file/8703423 application/pdf restricted ug 8693084 2021-02-11T07:51:29Z 2026-03-31T13:38:06Z A1 VABB-1 misc V Lies De Keer aut author 0000-0003-2620-0046 Karsu I. Kilic aut author Paul Van Steenberge aut author ug_TW11 0000-0001-6244-1299 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Daniel Kodura aut author Hendrik Frisch aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Marie-Françoise Reyniers aut author ug_TW11 Christopher Barner-Kowollik aut author Reinhold H. Dauskardt aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 eng Technology and Engineering Mechanical Engineering Mechanics of Materials Condensed Matter Physics General Materials Science General Chemistry http://hdl.handle.net/1854/LU-01GTXZP31713VR4SAB2HRVN5Q0 2021 2021 20 10 2021 No license (in copyright) published https://biblio.ugent.be/publication/01GTXZP31713VR4SAB2HRVN5Q0/file/01GTXZWMKHT84GAYGYKTX1KE5F image/png restricted ug 01GTXZP31713VR4SAB2HRVN5Q0 2023-03-07T12:10:37Z 2026-03-31T05:48:35Z V journalArticle Article A1 Joanna Schalnat aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 eng The long-term service life of polymers can be estimated with much shorter experiments by applying the time temperature superposition principle (TTS). In this approach, data is obtained at different temperatures, usually through a stepped isothermal method (SIM) on the same sample. Dynamic mechanical analysis (DMA) instruments offer two different measurement methods to obtain SIM data: (i) static creep tests and (ii) dynamic frequency sweeps. This paper compares both methods on highly graphite filled polypropylene. Our studies on reproducibility of each method show that the uncertainty for 20 year prediction can be lower than 6% for both methods. While creep-based tests require a shorter experimental time, frequency sweep based tests show a lower scatter on the final result. The two main factors introducing uncertainty on the end results are related to (i) the reproducibility of the experimental raw data and (ii) the TTS optimisation using shift factors. The optimisation of the shift factors by a numerical method improves the accuracy of the master curve. By comparing creep and frequency sweep SIM, it shows that for predictions of one decade, the methods deliver very comparable results (less than 10% difference). For longer predictions, the methods differ and are not interchangeable. Furthermore, DMA was also effectively used as a three-point bending setup, providing information about strain rate sensitivity and the linear visco-elastic region using the same test setup and same sample dimensions as for TTS. Technology and Engineering Polymers and Plastics Organic Chemistry Time temperature superposition principle (TTS) Stepped isothermal method (SIM) Dynamic (thermo-) mechanical analysis (DMA DTMA) Graphite filled polymer Life time predictions http://hdl.handle.net/1854/LU-8723036 10.1016/j.polymertesting.2021.107368 000703726800014 0142-9418 1873-2348 107368 9 p. 2021 0142-9418 1873-2348 2021 103 2021 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/8723036/file/8723037 application/pdf ug 8723036 2021-10-12T06:17:28Z 2026-03-31T14:57:11Z A1 VABB-1 journalArticle Article A1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Olivier Verschatse aut author 0000-0001-7732-6007 Lisa Heirman aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Epoxy is a material of choice for demanding applications thanks to its high chemical stability, stiffness, and strength. Yet, its brittle fracture behavior is an important downside for many sectors. Here, we show that the addition of electrospun thermoplastic nanofibers is a viable toughening strategy to design nanofiber reinforced epoxy materials with excellent toughness. Moreover, the use of transparent film-like specimens allowed in-situ imaging during mechanical testing. Optical and scanning electron microscopy, digital image correlation and crack length measurements are used to analyze the toughening mechanisms responsible for high toughening efficiency in detail. The addition of polyamide and polycaprolactone nanofibers resulted in an increased plastic energy uptake up to 100%. In-situ observation of the crack tip showed that the main energy-absorbing mechanism was due to bridging nanofibers. There was a profound decrease in toughening efficiency when nanofibers lacked sufficient adhesion with the matrix only when they were oriented parallel with the crack growth direction. The profound understanding of such underlying mechanisms opens up material design in applications where high toughness is required like adhesives, coatings, and fiber-reinforced composite laminates. Technology and Engineering General Engineering Ceramics and Composites Nano composites Coating Fracture toughness Interfacial strength Damage mechanics Digital image correlation http://hdl.handle.net/1854/LU-8678232 10.1016/j.compscitech.2020.108504 000595953300005 0266-3538 1879-1050 108504 14 p. 2021 0266-3538 1879-1050 2021 201 2021 No license (in copyright) published https://biblio.ugent.be/publication/8678232/file/8678235 application/pdf restricted https://biblio.ugent.be/publication/8678232/file/8678236 application/pdf https://biblio.ugent.be/publication/8678232/file/8678237 video/mp4 ug 8678232 2020-10-20T10:50:01Z 2026-03-31T14:57:11Z A1 VABB-1 journalArticle Article A1 Yang Yang aut author Bart Plovie aut author ug_UGent 0000-0002-3337-5955 Gabriele Chiesura aut author ug_UGent Thomas Vervust aut author ug_TW06 0000-0003-2771-3679 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Diana-Elena Mogosanu aut author ug_UGent Pieter Wuytens aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Jan Vanfleteren aut author ug_TW06 0000-0002-9654-7304 eng Flexible dielectric sensors received significant interest for real-time in situ cure monitoring of polymeric composites over the past decade. Currently, the state-of-the-art dielectric sensors mainly focus on detecting the distinct stages of the polymeric composite curing process. While low-cost and quantitative monitoring of the thermal, mechanical, and chemical properties of the materials during the cure is of great interest, to date, such a sensor system has not been realized because the existing devices excessively depend on external instrumentations, combined with a lack of an embedded reliable data processing module. Here, a fully integrated dielectric monitoring sensor system (DMS) incorporating dielectric and temperature sensors is developed, capable of monitoring in real-time the temperature, the degree of cure, and the glass transition temperature (T-g) of polymeric composites. An independent characterization of the cure kinetics was performed using differential scanning calorimetry and Raman spectroscopy. These data enabled associating the main physical and chemical transformations in the polymeric materials with particular features observed in the dielectric measurements. We demonstrate the accurate estimation of the degree of cure and T-g of an epoxy resin. The proposed system shows the potential for a new generation of intelligent manufacturing technology of composite materials. Technology and Engineering Cure monitoring dielectric sensor degree of cure fully integrated system glass transition temperature http://hdl.handle.net/1854/LU-8707503 10.1109/TIM.2021.3057291 000636274000123 0018-9456 1557-9662 6004809 9 p. 2021 0018-9456 1557-9662 2021 70 2021 No license (in copyright) published https://biblio.ugent.be/publication/8707503/file/8707504 application/pdf restricted ug 8707503 2021-05-06T15:02:12Z 2026-03-31T14:57:12Z A1 VABB-1 journalArticle Article A1 Sisi Wang aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Liesbeth Couck aut author ug_DI11 0000-0002-7965-4992 Wim Van Den Broeck aut author ug_DI11 0000-0001-6683-5658 Pieter Cornillie aut author ug_DI11 0000-0003-4412-3427 Maling Gou aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ludwig Cardon aut author ug_TW11 0000-0002-4019-612X eng The development of well-designed polylactic acid (PLA) based composite filaments through fused filament fabrication (FFF) is crucial, as PLA printed parts are characterized by a high brittleness. Here we focus on FFF composite formation using ductile poly (butylene adipate-co-terephthalate) (PBAT), the nanoclay cloisite and the chain extender Joncryl. A high modulus, flexibility, toughness and notched impact strength result upon combining PLA/PBAT (80:20; mass basis) with a sufficiently high cloisite amount (1-5 phr) supported by a suited Joncryl amount (0.3 phr). A fine PBAT dispersion is then ensured, as confirmed by scanning and transmission electron microscopy. For high cloisite amounts (e.g. 10 phr) the crystallinity and vicat softening temperature enhance but cloisite aggregation is unavoidable, leading to a strong reduction in tensile strain and toughness. Annealing increases crystallinity thus material strength, rigidity and impact, at least partially overruling the need of a fine dispersion. Novel radar charts are also reported to select an optimal bio-based blend suitable for different end-user applications by adjusting the composition and possible post-annealing of printed products. Technology and Engineering Mechanical Engineering Industrial and Manufacturing Engineering Mechanics of Materials Ceramics and Composites Biopolymers Additive manufacturing Composites Thermo-mechanical properties http://hdl.handle.net/1854/LU-8694251 10.1016/j.compositesb.2021.108613 000632868200002 1359-8368 1879-1069 108613 10 p. 2021 1359-8368 1879-1069 2021 210 2021 No license (in copyright) published https://biblio.ugent.be/publication/8694251/file/8694252 application/pdf restricted ug 8694251 2021-02-17T15:15:10Z 2026-03-31T14:57:12Z A1 VABB-1 conference C3 Sander Rijckaert aut author 0000-0003-4447-0867 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Fernando Ferreira edt editor A. M. Rocha edt editor R. Fangueiro edt editor A. Marques edt editor A. Zille edt editor AUTEX 2021 - 20th World Textile Conference eng Combining the dimensional freedom of additive manufacturing and the mechanical prowess of continuous fiber reinforced composites has been a highly anticipated object of study for the last years. Technology and Engineering http://hdl.handle.net/1854/LU-8721695 9789895480869 287 2021 9789895480869 AUTEX 2021 463 464 2021 No license (in copyright) published https://biblio.ugent.be/publication/8721695/file/8721699 application/pdf restricted https://biblio.ugent.be/publication/8721695/file/8721700 application/vnd.openxmlformats-officedocument.presentationml.presentation ug 8721695 2021-09-28T12:55:17Z 2026-03-31T14:57:11Z C3 journalArticle Article A1 Özlem İpek Kalaoglu Altan aut author ug_UGent Havva Başkan aut author Timo Meireman aut author Pooja Basnett aut author Bahareh Azimi aut author Alessandra Fusco aut author Niccola Funel aut author Giovanna Donnarumma aut author Andrea Lazzeri aut author Ipsita Roy aut author Serena Danti aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Wound dressings are high performance and high value products which can improve the regeneration of damaged skin. In these products, bioresorption and biocompatibility play a key role. The aim of this study is to provide progress in this area via nanofabrication and antimicrobial natural materials. Polyhydroxyalkanoates (PHAs) are a bio-based family of polymers that possess high biocompatibility and skin regenerative properties. In this study, a blend of poly(3-hydroxybutyrate) (P(3HB)) and poly(3-hydroxyoctanoate-co-3-hydroxy decanoate) (P(3HO-co-3HD)) was electrospun into P(3HB))/P(3HO-co-3HD) nanofibers to obtain materials with a high surface area and good handling performance. The nanofibers were then modified with silver nanoparticles (AgNPs) via the dip-coating method. The silver-containing nanofiber meshes showed good cytocompatibility and interesting immunomodulatory properties in vitro, together with the capability of stimulating the human beta defensin 2 and cytokeratin expression in human keratinocytes (HaCaT cells), which makes them promising materials for wound dressing applications. Technology and Engineering General Materials Science polyhydroxyalkanoates eco-friendly nanofibers wound dressings low-impact biomedical applications immunomodulation defensin keratinocytes http://hdl.handle.net/1854/LU-8719114 10.3390/ma14174907 000694323800001 1996-1944 4907 17 p. 2021 1996-1944 2021 14 17 2021 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8719114/file/8719142 application/pdf ug 8719114 2021-09-03T09:27:44Z 2023-05-08T11:53:18Z A1 VABB-1 journalArticle Article A1 Jose Gustavo De la Ossa aut author Alessandra Fusco aut author Bahareh Azimi aut author Jasmine Esposito Salsano aut author Maria Digiacomo aut author Maria-Beatrice Coltelli aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ipsita Roy aut author Marco Macchia aut author Andrea Lazzeri aut author Giovanna Donnarumma aut author Serena Danti aut author Rossella Di Stefano aut author eng Olive tree is a well-known source of polyphenols. We prepared an olive leaf extract (OLE) and characterized it via high performance liquid chromatography (HPLC) analysis. OLE was blended with different polyhydroxyalkanoates (PHAs), namely, poly(hydroxybutyrate-co-hydroxyvalerate) (PHBHV) and polyhydroxybutyrate/poly(hydroxyoctanoate-co-hydroxydecanoate) (PHB/PHOHD), to produce fiber meshes via electrospinning: OLE/PHBV and OLE/ (PHB/PHOHD), respectively. An 80–90% (w/w%) release of the main polyphenols from the OLE/PHA fibers occurred in 24 h, with a burst release in the first 30 min. OLE and the produced fiber meshes were assayed using human dermal keratinocytes (HaCaT cells) to evaluate the expression of a panel of cytokines involved in the inflammatory process and innate immune response, such as the antimicrobial peptide human beta defensin 2 (HBD-2). Fibers containing OLE were able to decrease the expression of the pro-inflammatory cytokines at 6 h up to 24 h. All the PHA fibers allowed an early downregulation of the pro-inflammatory cytokines in 6 h, which is suggestive of a strong anti-inflammatory activity exerted by PHA fibers. Differently from pure OLE, PHB/PHOHD fibers (both with and without OLE) upregulated the expression of HBD-2. Our results showed that PHA fiber meshes are suitable in decreasing pro-inflammatory cytokines and the incorporation of OLE may enable indirect antibacterial properties, which is essential in wound healing and tissue regeneration. Technology and Engineering polyphenol anti-inflammatory antibacterial wound healing wound dressings tissue regeneration bio-based http://hdl.handle.net/1854/LU-8719144 10.3390/app11094006 000649921000001 2076-3417 4006 15 p. 2021 2076-3417 2021 11 9 2021 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8719144/file/8719146 application/pdf ug 8719144 2021-09-03T11:30:17Z 2023-05-08T11:53:18Z A1 VABB-1 conference C3 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Lies De Keer aut author 0000-0003-2620-0046 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Killic Karsu aut author Paul Van Steenberge aut author ug_TW11 0000-0001-6244-1299 Anastasia Kislyak aut author Hendrik Frisch aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Marie-Françoise Reyniers aut author ug_TW11 Christopher Barner-kowollik aut author R. W. Dauskardt aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Virtual MIPOL2020 Congress eng Technology and Engineering Chemistry http://hdl.handle.net/1854/LU-8686070 9788836230266 IL9 1 p. 2020 9788836230266 2020 18 18 2020 No license (in copyright) published https://biblio.ugent.be/publication/8686070/file/8686071 application/pdf restricted https://biblio.ugent.be/publication/8686070/file/8686072 application/pdf https://www.mipol.unimi.it/ https://www.mipol.unimi.it/Booklet_MIPOL2020.pdf ug 8686070 2021-01-06T13:06:41Z 2026-03-31T13:20:18Z C3 journalArticle Article A1 Kim Phan aut author ug_UGent 0000-0001-8660-5251 Elias Van Den Broeck aut author ug_UGent 0000-0002-9609-4333 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Katleen Raes aut author ug_LA23 0000-0003-2382-120X Steven De Meester aut author ug_LA24 0000-0002-5246-3918 eng Natural dyes might be more environmentally sustainable compared to their synthetic counterparts, however in general their performance is worse. Therefore, typically metallic mordants are applied to improve the natural dye's affinity towards substrates, but this is not a suitable technique in a 'green story'. In this paper, we test the potential of using anthocyanins from blueberry waste for dyeing cotton with biomordants, which are selected to tailor the intermolecular interactions such as hydrogen bonds, ionic bonds and pi-pi interactions with the dye molecule. In the experimental part, parameters during extraction and dyeing were optimized (e.g. temperature, pH, dyeing time and concentration). The effect of the (bio)mordants was monitored by Fourier transform infrared spectroscopy, spectrophotometric measurements and standard ISO wash and light tests. It was shown that stannous chloride stands out as metallic mordant, while no biomordants show sufficient intermolecular interactions to replace this metal salt. The experimental study has been corroborated with a series of molecular modeling calculations to obtain more insight into the intermolecular interactions between dye and (bio)mordants. To this end, both static Density Functional Theory based calculations as semi-empirical and force field based molecular dynamics calculations have been performed. The results indeed confirm that, in general, too small interaction energies for the biomordants of interest with the dye molecules are found, in correspondence with experimental findings. Overall, by performing systematic experiments in combination with the interpretation of the molecular models, this study yields valuable insights into the development of green routes towards use of anthocyanins as a natural dye for cellulose-based materials. Chemistry Technology and Engineering Anthocyanins Cotton Density functional theory (DFT) Molecular dynamics Natural dye ANTIOXIDANT ACTIVITY THERMAL-DEGRADATION RED-WINE ADSORPTION WATER COPIGMENTATION COLOR EXTRACTION STABILITY DYNAMICS http://hdl.handle.net/1854/LU-8644170 10.1016/j.dyepig.2019.108180 000519335300003 0143-7208 1873-3743 108180 19 p. 2020 0143-7208 1873-3743 2020 176 2020 No license (in copyright) published https://biblio.ugent.be/publication/8644170/file/8644171 application/pdf restricted ug 8644170 2020-01-23T09:20:25Z 2026-03-31T13:38:06Z A1 VABB-1 misc V Brecht Tomme aut author ug_TW11 0000-0001-7765-3059 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 dut Technology and Engineering http://hdl.handle.net/1854/LU-8677677 1 p. 2020 2020 3 51 51 2020 No license (in copyright) published https://biblio.ugent.be/publication/8677677/file/8677680 application/pdf restricted ug 8677677 2020-10-13T09:47:08Z 2023-05-08T11:51:51Z V journalArticle Review A1 Maria-Beatrice Coltelli aut author Serena Danti aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Andrea Lazzeri aut author Pierfrancesco Morganti aut author eng The present review had the aim of describing the methodologies of synthesis and properties of biobased pullulan, a microbial polysaccharide investigated in the last decade because of its interesting potentialities in several applications. After describing the implications of pullulan in nano-technology, biodegradation, compatibility with body and skin, and sustainability, the current applications of pullulan are described, with the aim of assessing the potentialities of this biopolymer in the biomedical, personal care, and cosmetic sector, especially in applications in contact with skin. Technology and Engineering pullulan biopolymers exopolysaccharides biodegradation biocompatibility POLYMERS DELIVERY EXOPOLYSACCHARIDES NANOPARTICLES SCAFFOLDS MATRICES NANOGEL WATER http://hdl.handle.net/1854/LU-8675582 10.3390/jfb11010020 000523723900010 2079-4983 20 17 p. 2020 2079-4983 2020 11 1 2020 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8675582/file/8675586 application/pdf ug 8675582 2020-09-24T11:31:48Z 2023-05-08T11:51:46Z A1 VABB-1 journalArticle Article A1 Bahareh Azimi aut author Lily Thomas aut author Alessandra Fusco aut author Özlem İpek Kalaoglu Altan aut author ug_UGent Pooja Basnett aut author Patrizia Cinelli aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ipsita Roy aut author Giovanna Donnarumma aut author Maria-Beatrice Coltelli aut author Serena Danti aut author Andrea Lazzeri aut author eng Polyhydroxyalkanoates (PHAs) are a family of bio-based polyesters that have found different biomedical applications. Chitin and lignin, byproducts of fishery and plant biomass, show antimicrobial and anti-inflammatory activity on the nanoscale. Due to their polarities, chitin nanofibril (CN) and nanolignin (NL) can be assembled into micro-complexes, which can be loaded with bioactive factors, such as the glycyrrhetinic acid (GA) and CN-NL/GA (CLA) complexes, and can be used to decorate polymer surfaces. This study aims to develop completely bio-based and bioactive meshes intended for wound healing. Poly(3-hydroxybutyrate)/Poly(3-hydroxyoctanoate-co-3-hydroxydecanoate), P(3HB)/P(3HO-co-3HD) was used to produce films and fiber meshes, to be surface-modified via electrospraying of CN or CLA to reach a uniform distribution. P(3HB)/P(3HO-co-3HD) fibers with desirable size and morphology were successfully prepared and functionalized with CN and CLA using electrospinning and tested in vitro with human keratinocytes. The presence of CN and CLA improved the indirect antimicrobial and anti-inflammatory activity of the electrospun fiber meshes by downregulating the expression of the most important pro-inflammatory cytokines and upregulating human defensin 2 expression. This natural and eco-sustainable mesh is promising in wound healing applications. Technology and Engineering biopolymer bio-based surface modification nanolignin electrospinning electrospray anti-inflammatory DRUG-DELIVERY SCAFFOLDS CHALLENGES http://hdl.handle.net/1854/LU-8675587 10.3390/jfb11030062 000578212100001 2079-4983 62 17 p. 2020 2079-4983 2020 11 3 2020 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8675587/file/8675594 application/pdf ug 8675587 2020-09-24T11:44:43Z 2023-05-08T11:51:46Z A1 VABB-1 journalArticle Article A1 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Koen Deventer aut author ug_GE32 0000-0001-8038-1824 Dave Manhaeghe aut author ug_LA24 0000-0002-4117-6892 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng A challenge for the photodegradation of (organic) micro-pollutants in waste water treatment is the mechanistic and kinetic understanding beyond the degradation of the initial (parent) harmful product, e.g. the phenylurea herbicide isoproturon (IPU). By combining liquid chromatography-mass spectrometry and kinetic Monte Carlo modeling, we demonstrate that upon optimizing the dip-coating conditions (0.34 mol L (-1) TiO2 solution at a coating speed of 160 mm min( -1)) for the functionalization of a superhydrophilic electrospun silica nanofibrous membrane (i) hydroxylation is a dominant reaction pathway and (ii) once IPU reacts on the surface of the TiO(2 )nanoparticles, further hydroxylation occurs sufficiently fast, with complete IPU removal under the detection limit (5-10 mg Lsolution(-1)) as a result of UV irradiation within 8 h. As hydroxylation is dominant, degradation intermediates with a higher water solubility are formed and therefore a decreased toxicity is obtained upon reintroducing the treated solution into the environment. This is confirmed by respirometry, with an increase in the oxygen uptake rate of an activated sludge from 5.9 mg O(2 )g(activated) ( -1)(sludge) h (-1 )for an untreated 10 mg L-1 IPU solution to 8.2 mg O-2 g(activated sludge) (-1) h( -1) for a solution irradiated for 8 h, in line with a blank solution. Technology and Engineering Chemistry Photodegradation kinetics Water treatment Electrospinning Kinetic Monte Carlo modeling Respirometry Hydroxylation ADVANCED OXIDATION PROCESSES HETEROGENEOUS PHOTOCATALYTIC DEGRADATION WASTE-WATER TREATMENT HERBICIDE ISOPROTURON ELECTROSPUN NANOFIBERS INTERMEDIATE PRODUCTS LIQUID-CHROMATOGRAPHY AQUEOUS-SOLUTION SUPPORTED TIO2 AZO DYES http://hdl.handle.net/1854/LU-8644208 10.1016/j.cej.2020.124143 000527331600121 1385-8947 1873-3212 124143 14 p. 2020 1385-8947 1873-3212 2020 387 2020 No license (in copyright) published https://biblio.ugent.be/publication/8644208/file/8644213 application/pdf restricted https://biblio.ugent.be/publication/8644208/file/8649160 application/vnd.openxmlformats-officedocument.wordprocessingml.document https://biblio.ugent.be/publication/8644208/file/8649161 application/pdf ug 8644208 2020-01-23T14:03:53Z 2023-05-08T11:50:36Z A1 VABB-1 bookChapter B2 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Electrospun (polymeric) nanofibers are proved to be one of the most successful toughening techniques for improving the damage resistance of structural fiber-reinforced polymer composite laminates. In the past decade, we have seen a steady increase in published research papers and industrial interest on this topic. In this chapter, we highlight the major findings related to the use of electrospun nanofiber toughening veils together with a concise overview of our own research trajectory of the past years on this topic. There are five main sections in this chapter which guide the reader (be them experienced or inexperienced with the topic) through the current state-of-the-art: an introductory section (Section 11.1), a section about the mechanisms of nanofiber toughening (Section 11.2), an overview of the nanofiber effect on a broad range of mechanical properties (Section 11.3), important considerations regarding nanofiber toughening (Section 11.4), and a future outlook and concluding section (Sections 11.5 and 11.6). Technology and Engineering Delamination fiber-reinforced polymer toughening fracture toughness electrospinning nanofibers nanoparticles mechanics http://hdl.handle.net/1854/LU-8654371 10.1016/B978-0-12-819904-6.00011-6 9780128199046 26 p. 2020 Baogue Han edt editor Tuan Anh Nguyen edt editor K. Subrahmanya Bhat edt editor Sumit Sharma edt editor Li Longbiao edt editor 26 p. 9780128199046 Elsevier 2020 235 260 2020 No license (in copyright) published https://biblio.ugent.be/publication/8654371/file/8654372 application/pdf restricted ug 8654371 2020-03-20T09:31:59Z 2026-03-31T14:57:12Z B2 VABB-4 journalArticle Article A1 Olivier Verschatse aut author 0000-0001-7732-6007 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Fiber reinforced composite materials are typically comprised of two phases, i.e., the reinforcing fibers and a surrounding matrix. At a high volume fraction of reinforcing fibers, the matrix is confined to a microscale region in between the fibers (1–200 µm). Although these regions are interconnected, their behavior is likely dominated by their micro-scale. Nevertheless, the characterization of the matrix material (without reinforcing fibers) is usually performed on macroscopic bulk specimens and little is known about the micro-mechanical behavior of polymer matrix materials. Here, we show that the microscale behavior of an epoxy resin typically used in composite production is clearly different from its macroscale behavior. Microscale polymer specimens were produced by drawing microfibers from vitrifying epoxy resin. After curing, tensile tests were performed on a large set of pure epoxy microfiber specimens with diameters ranging from 30 to 400 µm. An extreme ductility was observed for microscale epoxy specimens, while bulk scale epoxy specimens showed brittle behavior. The microsized epoxy specimens had a plastic deformation behavior resulting in a substantially higher ultimate tensile strength (up to 380 MPa) and strain at break (up to 130 %) compared to their bulk counterpart (68 MPa and 8%). Polarized light microscopy confirmed a rearrangement of the internal epoxy network structure during loading, resulting in the plastic deformation of the microscale epoxy. This was further accompanied by in-situ electron microscopy to further determine the deformation behavior of the micro-specimens during tensile loading and make accurate strain measurements using video-extensometry. This work thus provides novel insights on the epoxy material behavior at the confined microscale as present in fiber reinforced composite materials. Technology and Engineering Scanning Electron Microscopy (SEM) micromechanical testing microscale yielding plasticity COMPOSITE-MATERIALS FRACTURE-TOUGHNESS TENSILE PROPERTIES STRENGTH RESIN POLYMER http://hdl.handle.net/1854/LU-8679816 10.3390/polym12112581 000594942900001 2073-4360 2581 14 p. 2020 2073-4360 2020 12 11 2020 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8679816/file/8679818 application/pdf ug 8679816 2020-11-04T10:47:45Z 2026-03-31T14:57:12Z A1 VABB-1 journalArticle Article A1 Timo Meireman aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Elisa Van Verre aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Fibre reinforced composite laminates are key engineering materials allowing to design lightweight components with high mechanical properties. Yet they are prone to delamination between the reinforcing plies, which in turn limits the damage resistance of many applications. This is especially true for the interfaces between dissimilar reinforcing plies that are often encountered in actual components, e.g. differences in fibre orientation, fibre material or ply architecture, where high interlaminar stresses can occur. Nanofibrous toughening veils are known to increase the damage resistance when inserted between similar reinforcing plies, but it is currently unknown how they perform when delamination occurs at dissimilar interfaces. Here, the nanofibre toughening of frequently encountered dissimilar interfaces such as occurring between multidirectionally stacked unidirectional fibre plies (+45 degrees/-45 degrees), multistructural stackings (unidirectional versus fabrics) and multimaterial configurations (glass fibres versus carbon fibres) are analysed. These interfaces largely exert their influence on the crack path during delamination and thus alter the effectiveness of nanofibre toughening. Poly(ether-block-amide) nanofibres of the biosourced polyamide 11 family result in a large increase in mode I and mode II interlaminar fracture toughness for all the tested dissimilar interfaces. We show that their effectiveness however depends on the underlying delamination mechanics present in different dissimilar interfaces. (c) 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Technology and Engineering Mechanical Engineering General Materials Science Mechanics of Materials Nanocomposites Matrix cracking Interface debonding Nanofibre bridging Electrospinning Hybrid composite INTERLAMINAR FRACTURE-TOUGHNESS MODE-I CRACK DEFLECTION FIBER ORIENTATION INTERLAYERS http://hdl.handle.net/1854/LU-8671689 10.1016/j.matdes.2020.109050 000576530800007 0264-1275 1873-4197 109050 11 p. 2020 0264-1275 1873-4197 2020 195 2020 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/8671689/file/8671692 application/pdf private https://biblio.ugent.be/publication/8671689/file/8674697 application/pdf ug 8671689 2020-08-12T13:44:59Z 2026-03-31T14:57:12Z A1 VABB-1 journalArticle Article A1 Timo Meireman aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Sander Rijckaert aut author 0000-0003-4447-0867 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng In this work an innovative electrospinning system is proposed that simultaneously has an adequate temperature resistance, a high increase in mode I (þ51%) and mode II (þ96%) delamination performance and can be commercially produced. Interleaving nanofibrous veils can potentially solve the issue of the limited delamination resistance encountered in composite laminates, but industrial upscaling has always been impeded by one or more critical factors. These constraining factors include a limited temperature stability of the nanofibers, a lack in simultaneous mode I and II delamination performance increase and the complexity of the electrospinning system because non-commercial polymers or specialty nanofibers (e.g. coaxial) are required. In this paper, a robust electrospinning system is proposed that is the first to overcome all major hurdles to make nanofiber toughening industrially viable. A new class of nanofibers based on biosourced polyamide 11 and its poly(ether-block-amide) co-polymers is used to deal with those shortcomings. The nanofibers have tuneable diameters down to 50 nm and cross-section morphologies ranging from circular to ribbon-shaped. The key to this work is the fundamental underpinning of the toughening effect using a broad range of interleaves with different mechanical and thermal properties, fiber diameters and fiber morphologies, all produced from the same bio-based base polymer. Generally, round and thin nanofibers performed better than larger and ribbon-like fibers. The relationship between the fiber morphology and the delamination performance is further underpinned using detailed analysis of the fracture surface. Ultimately, this results in a range of optimized nanofibrous veils capable of improving the delamination resistance considerably without suffering from the aforementioned drawbacks. Technology and Engineering Nano composites Matrix cracking Fiber/matrix bond Fiber bridging Poly(ether-block-amide) (PEBA) INTERLAMINAR FRACTURE-TOUGHNESS MODE-I ELECTROSPUN NANOFIBERS INTERLAYERS BEHAVIOR SOLVENT http://hdl.handle.net/1854/LU-8656395 10.1016/j.compscitech.2020.108126 000527648600006 0266-3538 1879-1050 108126 10 p. 2020 0266-3538 1879-1050 2020 193 2020 No license (in copyright) published https://biblio.ugent.be/publication/8656395/file/8656398 application/pdf restricted https://biblio.ugent.be/publication/8656395/file/8694808 application/pdf ug 8656395 2020-04-06T07:54:15Z 2026-03-31T14:57:12Z A1 VABB-1 journalArticle Article A1 Joanna Schalnat aut author David Garoz Gómez aut author ug_UGent 0000-0003-2110-0118 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 eng Long-term predictions of material properties such as stiffness and creep resistance are important in many engineering applications and require high reliability and accuracy. This is especially true for polymer materials and their composites as their viscoelastic nature results in time-dependent material behaviour and any measurement uncertainties or errors amplify in long-term predictions. To measure this behaviour at smallest loadings, Dynamic Mechanical Analysis (DMA) is frequently declared as an ideal method. However, the measurement accuracy and repeatability of this method is strongly influenced by (i) the testing fixture and corresponding loading mode, (ii) the sample preparation and (iii) the plotting scale to interpret the test results. In this study, relevant experimental parameters were found for DMA and a proper procedure was designed, which was then applied to measure the viscoelastic behaviour of a highly temperature and creep resistant thermoplastic polymer (polyethersulfone) and of a highly graphite filled polypropylene composite. In combination with finite element simulations and in-situ strain measurements by digital image correlation (DIC), the main influences on measurement accuracy of three-point-bending DMA were identified and subsequently used to determine measurement guidelines. Using these guidelines, DMA measurements allow quantitative determination of the viscoelastic response for rigid polymer and composite materials. Technology and Engineering DMA Accuracy Repeatability 3-Point-bending PESU Technoform-PP GUIDELINES http://hdl.handle.net/1854/LU-8676908 10.1016/j.polymertesting.2020.106799 000581970300042 0142-9418 1873-2348 106799 10 p. 2020 0142-9418 1873-2348 2020 91 2020 No license (in copyright) published https://biblio.ugent.be/publication/8676908/file/8676909 application/pdf restricted https://biblio.ugent.be/publication/8676908/file/8694783 application/pdf ug 8676908 2020-10-06T14:34:42Z 2026-03-31T14:57:12Z A1 VABB-1 journalArticle Article A1 Sisi Wang aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Hesheng Xia aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ludwig Cardon aut author ug_TW11 0000-0002-4019-612X eng In many fused filament fabrication (FFF) processes, commercial printers are used, but rarely are printer settings transferred from one commercial printer to the other to give similar final tensile part performance. Here, we report such translation going from the Felix 3.0 to Prusa i3 MK3 printer by adjusting the flow rate and overlap of strands, utilizing an in-house developed blend of polylactic acid (PLA) and poly(butylene adipate-co-terephthalate) (PBAT). We perform a sensitivity analysis for the Prusa printer, covering variations in nozzle temperature, nozzle diameter, layer thickness, and printing speed (T-nozzle, d(nozzle), LT, and v(print)), aiming at minimizing anisotropy and improving interlayer bonding. Higher mass, larger width, and thickness are obtained with larger d(nozzle), lower v(print), higher LT, and higher T-nozzle. A higher v(print) results in less tensile strain at break, but it remains at a high strain value for samples printed with d(nozzle) equal to 0.5 mm. v(print) has no significant effect on the tensile modulus and tensile and impact strength of the samples. If LT is fixed, an increased d(nozzle) is beneficial for the tensile strength, ductility, and impact strength of the printed sample due to better bonding from a wider raster structure, while an increased LT leads to deterioration of mechanical properties. If the ratio d(nozzle)/LT is greater than 2, a good tensile performance is obtained. An improved T-nozzle leads to a sufficient flow of material, contributing to the performance of the printed device. The considerations brought forward result in a deeper understanding of the FFF process and offer guidance about parameter selection. The optimal d(nozzle)/v(print)/LT/T-nozzle combination is 0.5 mm/120 mm s(-1)/0.15 mm/230 degrees C. Technology and Engineering printing parameter mechanical property printer transferability MECHANICAL-PROPERTIES IMPACT STRENGTH PLA FDM PROPERTY http://hdl.handle.net/1854/LU-8681095 10.3390/polym12112573 000593870800001 2073-4360 2573 20 p. 2020 2073-4360 2020 12 11 2020 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8681095/file/8681096 application/pdf ug 8681095 2020-11-18T13:48:07Z 2026-03-31T14:57:12Z A1 VABB-1 journalArticle Article A1 Clément Lacoste aut author Benjamin Gallard aut author José-Marie Lopez-Cuesta aut author Özlem İpek Kalaoglu Altan aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng In the present study, poly(3-hydroxybuturate-co-3-hydroxyvalerate) (PHBV) and plasticized polylactide acid (PLA) blends were processed by melt extrusion with different weight ratio (up to 20 wt.% of PHBV). Bionanocomposites were obtained through the incorporation of an organomodified montmorillonite (C30B) at 3 wt.%. The main features of the processing and physico-chemical characterization of films and injected samples were assessed and the influence of the components on the chemical, thermal and mechanical properties of the bionanocomposites was investigated. The results indicated that plasticized PLA/PHBV/C30B bionanocomposites present optimal mechanical properties for sanitary applications. Moreover, plasticized PLA/PHBV could lead to finely tuned biomaterials able to form electrospun nanofibers. Technology and Engineering biopolymer blends PLA PHBV nanocomposite FILMS PLLA/PHBV http://hdl.handle.net/1854/LU-8675595 10.3390/jfb11030064 000578196900001 2079-4983 64 12 p. 2020 2079-4983 2020 11 3 2020 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8675595/file/8675596 application/pdf ug 8675595 2020-09-24T11:47:47Z 2023-05-08T11:51:47Z A1 VABB-1 journalArticle Article A1 Ronald Merckx aut author 0000-0002-2867-0888 Thomas Swift aut author Ryan Rees aut author Joachim F. R. Van Guyse aut author Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Heidi Ottevaere aut author ug_TW51 Hugo Thienpont aut author ug_TW51 Valentin-Victor Jerca aut author ug_UGent Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 eng Dye-functionalized polymers have been extensively studied to understand polymer chain dynamics, intra or inter-molecular association and conformational changes as well as in practical applications such as signal amplification in diagnostic tests and light-harvesting antennas. In this work, the Forster resonance energy transfer (FRET) of dye-functionalized poly(2-ethyl-2-oxazoline) (PEtOx) was studied to evaluate the effect of dye positioning and polymer chain length on the FRET efficiency. Therefore, both alpha (initiating terminus)- or omega (terminal chain end)-fluorophore single labeled and dual alpha,omega-fluorescent dye labeled PEtOx were prepared via cationic ring opening polymerization (CROP) using 1-(bromomethyl)pyrene as the initiator and/or 1-pyrenebutyric acid or coumarin 343 as the terminating agent, yielding well-defined PEtOx with high labeling efficiency (over 91%). Fluorescence studies revealed that intramolecular FRET is most efficient for heterotelechelic PEtOx containing both pyrene and coumarin 343 fluorophores as chain ends, as expected. A strong dependence of the energy transfer on the chain length was found for these dual labeled polymers. The polymers were tested in both dilute organic (chloroform) and aqueous media revealing a higher FRET efficiency in water due to the enhanced emissive properties of pyrene. The application of dual labeled polymers as fluorescent probes for temperature sensing was demonstrated based on the lower critical solution temperature behavior of the PEtOx. Furthermore, these polymers could be successfully processed into fibers and thin films. Importantly, the fluorescence properties were retained in the solid state without decreasing the FRET efficiency, thus opening future possibilities for application of these materials in solar cells and/or sensors. Chemistry Materials Chemistry General Chemistry LIGHT-HARVESTING POLYMERS FLUORESCENCE POLYMERIZATION DYNAMICS MICELLES HYBRIDS CHAINS POLY(2-OXAZOLINE)S TEMPERATURE STRATEGIES http://hdl.handle.net/1854/LU-8680287 10.1039/d0tc02830d 000581559100019 2050-7526 2050-7534 13 p. 2020 2050-7526 2050-7534 2020 8 40 14125 14137 2020 No license (in copyright) published https://biblio.ugent.be/publication/8680287/file/8680375 application/pdf https://biblio.ugent.be/publication/8680287/file/8680376 application/pdf https://biblio.ugent.be/publication/8680287/file/8680792 application/pdf restricted ug 8680287 2020-11-10T19:08:52Z 2026-03-31T14:54:18Z A1 VABB-1 journalArticle Article A1 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Ronald Merckx aut author 0000-0002-2867-0888 Jana Becelaere aut author 0000-0001-5024-3308 Melissa Everaerts aut author Joachim Van Guyse aut author Ondrej Sedlacek aut author ug_UGent BRUNO DE GEEST aut author ug_UGent Guy Van den Mooter aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 eng In biomedicine, polymer blends are frequently applied in wound dressing design or drug delivery. Within these applications, poly(2-alkyl/aryl-2-oxazoline)s (PAOx) are emerging as a popular matrix due to excellent biocompatibility and miscibility with other polymers. However, as much is known of PAOx miscibility with other biocompatible polymer systems, so little is known of the miscibility within the PAOx class. We show the remarkable phase separation of two important, structurally alike, amorphous PAOx, i.e., poly(2-ethyl2-oxazoline) and poly(2-n-propyl-2-oxazoline), that occurs when the polymers' number-average molar mass exceeds 10 kg.mol(-1). The (im)miscibility as a function of average molar mass is experimentally investigated by thermal analysis, theoretically underpinned by the Flory-Huggins lattice theory, and visualized by fluorescence microscopy in both films and nanofibers, the latter being a high-potential support material in biomedicine. These results provide important knowledge on PAOx (im)miscibility which has a crucial impact on the behavior of the many final end products they are investigated for. Chemistry SOLID DISPERSIONS DRUG-DELIVERY POLY(2-OXAZOLINE)S MISCIBILITY NANOFIBERS SOLUBILITY FORMULATION BLENDS http://hdl.handle.net/1854/LU-8676370 10.1021/acs.macromol.0c00970 000571389300037 0024-9297 1520-5835 11 p. 2020 0024-9297 1520-5835 2020 53 17 7590 7600 2020 No license (in copyright) published https://biblio.ugent.be/publication/8676370/file/8676371 application/pdf restricted ug 8676370 2020-10-02T11:59:47Z 2026-03-31T14:54:18Z A1 VABB-1 journalArticle Article A1 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Luisa Cossu aut author Jana Becelaere aut author 0000-0001-5024-3308 Joachim Van Guyse aut author Ali Tigrine aut author ug_WE07 0000-0003-1639-1344 Maarten Vergaelen aut author ug_UGent Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng This work shows the design of highly porous membranes with tunable wettability based on poly(2-n-propyl-2-oxazoline) (PnPrOx) nanofibers. Wicking and advanced contact angle experiments demonstrate the high potential for applications requiring specific interactions with aqueous media. PnPrOx is a popular member among the biocompatible poly(2-oxazoline)s due to its thermoresponsiveness in aqueous solutions, enabling the production of ‘smart materials’. On material level, however, many interesting properties of this polymer remain undiscovered. Electrospinning is an ideal technique to transfer the properties observed in solutions to end-material properties, as the polymer is processed into highly porous, nanofibrous membranes. PnPrOx' electrospinnability is here investigated in environmentally friendly ethanol/water solvent systems, ensuring industrial scalability. The nanofibrous membranes show increased hydrophobicity exhibiting the rose-petal effect. Upon functionalization with tannic acid, the hydrophobic membranes are transformed into hydrophilic nanofibers showing water-stability in both fresh and salty water, even below the polymer cloud point temperature. By varying the tannic acid amount, the hydrophilicity can be fine-tuned as the contact area between water droplets and surface, the rate and manner of water uptake and the extent of the rose-petal effect can be manipulated easily. Hence an interesting material is designed for applications in which water caption and transport are important. Technology and Engineering Mechanical Engineering General Materials Science Mechanics of Materials Poly(2-n-propyl-2-oxazoline) Nanofibers Wettability Rose-petal Contact angle Tannic acid CRITICAL SOLUTION TEMPERATURE HYDROGEN-BONDED MULTILAYERS SUPERHYDROPHOBIC SURFACES SILVER NANOPARTICLES TANNIC-ACID POLY(2-OXAZOLINE)S POLYMER WATER MEMBRANE PH http://hdl.handle.net/1854/LU-8667396 10.1016/j.matdes.2020.108747 000568835300003 0264-1275 1873-4197 108747 12 p. 2020 0264-1275 1873-4197 2020 192 2020 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/8667396/file/8667409 application/pdf ug 8667396 2020-06-26T07:39:19Z 2026-03-31T14:54:18Z A1 VABB-1 misc V Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Johanna Louwagie aut author ug_TW11 0000-0002-3511-4134 dut Technology and Engineering http://hdl.handle.net/1854/LU-8686363 1 p. 2020 2020 4 47 47 2020 No license (in copyright) published https://biblio.ugent.be/publication/8686363/file/8686365 application/pdf restricted ug 8686363 2021-01-08T09:28:22Z 2023-05-08T11:52:09Z V conference C1 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 19th World Textile conference (AUTEX-2019): Textiles at the crossroads eng Optical nanofibrous sensors show potential in many application areas, including biomedicine, as they provide ultra-sensitivity combined with versatility, flexibility and user-friendliness. In our work stimuli-sensitive dyes are incorporated in a polymeric nanofibrous matrix by the process of solvent electrospinning. An important challenge that is tackled here is dye-immobilization as to design a stable sensor. In addition, an ecological friendly production process is aimed for resulting in the use of “green” solvents such as water and ethanol. However, the use of hydrophilic polymers poses some challenges with regard to the solvent electrospinning process, which are addressed in this work as well. Technology and Engineering Chemistry Solvent electrospinning nanofibers optical sensors http://hdl.handle.net/1854/LU-8620290 9789079892068 6 p. 2019 9789079892068 AUTEX 2019 2019 No license (in copyright) published https://biblio.ugent.be/publication/8620290/file/8620298 application/pdf ug 8620290 2019-06-21T14:13:32Z 2026-03-31T13:11:33Z C1 VABB-5 conference C1 Özlem İpek Kalaoglu Altan aut author ug_UGent Timo Meireman aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 AUTEX2019 eng The use of nanofibers is expanding from academic into industry as these lightweight and highly porous materials are advantageous in many application areas. The main objectives of this roject is to reveal the potential of the bioeconomy in Europe, to decrease the use of fossil-based products, lead to greener and more environmentally friendly growth by fighting against climate change. For this purpose, nonwovens are prepared from bio-based polymers using solution electrospinning method for cosmetics and wound-care applications. Technology and Engineering Bio-based polymers electrospinning nanofibers wound-care face masks http://hdl.handle.net/1854/LU-8620299 9789079892068 3 p. 2019 9789079892068 Ghent Autex 2019 2019 Creative Commons Attribution-NonCommercial 4.0 International Public License (CC BY-NC 4.0) published https://biblio.ugent.be/publication/8620299/file/8620304 application/pdf https://ojs.ugent.be/autex/article/view/11605 ug 8620299 2019-06-21T14:21:26Z 2026-03-31T13:24:04Z C1 VABB-5 conference C3 Jana Becelaere aut author 0000-0001-5024-3308 Chris Vervaet aut author ug_FW01 0000-0002-1291-6054 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 19th FEA Research Symposium, FEARS 2019 eng Medicine and Health Sciences Technology and Engineering http://hdl.handle.net/1854/LU-8612204 2019 2019 18 19 2019 No license (in copyright) published https://biblio.ugent.be/publication/8612204/file/8612206 application/pdf https://biblio.ugent.be/publication/8612204/file/8612207 application/pdf http://www.fears.ugent.be/booklet.pdf ug 8612204 2019-04-15T13:58:39Z 2026-03-31T13:22:46Z C3 conference C1 Sisi Wang aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Rudinei Fiorio aut author ug_UGent Hesheng Xia aut author Jie Zhang aut author Maling Giu aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ludwig Cardon aut author ug_TW11 0000-0002-4019-612X AUTEX 2019, 19th World Textile Conference on Textiles at the Crossroads eng Bio-material polylactic acid and poly(butylene adipate-co-terephthalate) were blended to achieve increased ductility of the blend. Cloisite was added to improve the stiffness of the blend. The blends were made into filament suitable for extrusion-based additive manufacturing. Melt flow index of the filament and mechanical properties of the printed bars were tested. Preliminary results showed that the melt flow index increases significantly with cloisite and the modulus of polylactic acid/poly(butylene adipate-co-terephthalate) improved slightly. The notched impact strength of the blend increased with increasing content of cloisite, and it increased significantly after annealing, especially for blends without cloisite. Key Technology and Engineering Polylactic acid poly(butylene adipate-co-terephthalate) additive manufacturing annealing http://hdl.handle.net/1854/LU-8620115 9789079892068 157 4 p. 2019 9789079892068 Ghent Autex 2019 2019 Creative Commons Attribution-NonCommercial 4.0 International Public License (CC BY-NC 4.0) published https://biblio.ugent.be/publication/8620115/file/8620188 application/pdf https://ojs.ugent.be/autex/article/view/11499 ug 8620115 2019-06-21T10:19:20Z 2026-03-31T13:22:22Z C1 VABB-5 conference C1 Sisi Wang aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Rudinei Fiorio aut author ug_UGent H. Xia aut author Jia Zhang aut author M. Gou aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ludwig Cardon aut author ug_TW11 0000-0002-4019-612X 19th World conference on textiles (AUTEX-2019) eng Bio-material polylactic acid and poly(butylene adipate-co-terephthalate) were blended to achieve increased ductility of the blend. Cloisite was added to improve the stiffness of the blend. The blends were made into filament suitable for extrusion-based additive manufacturing. Melt flow index of the filament and mechanical properties of the printed bars were tested. Preliminary results showed that the melt flow index increases significantly with cloisite and the modulus of polylactic acid/poly(butylene adipate-co-terephthalate) improved slightly. The notched impact strength of the blend increased with increasing content of cloisite, and it increased significantly after annealing, especially for blends without cloisite. Technology and Engineering http://hdl.handle.net/1854/LU-8628296 9789079892068 157 4 p. 2019 9789079892068 2019 2019 Creative Commons Attribution-NonCommercial 4.0 International Public License (CC BY-NC 4.0) published https://biblio.ugent.be/publication/8628296/file/8628297 application/pdf https://biblio.ugent.be/publication/8628296/file/8628298 application/pdf https://ojs.ugent.be/autex/article/view/11499 ug 8628296 2019-09-16T10:54:01Z 2026-03-31T13:22:22Z C1 VABB-5 conference C3 Lies De Keer aut author 0000-0003-2620-0046 K.I. Karsu aut author Paul Van Steenberge aut author ug_TW11 0000-0001-6244-1299 H. Frisch aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Marie-Françoise Reyniers aut author ug_TW11 C. Barner- Kowollik aut author R.W. Dauskardt aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 16th Pacific Polymer Conference (PPC16) eng Technology and Engineering Chemistry http://hdl.handle.net/1854/LU-8639405 18 p. 2019 2019 2019 No license (in copyright) published https://biblio.ugent.be/publication/8639405/file/8639408 application/pdf restricted https://biblio.ugent.be/publication/8639405/file/8639409 application/pdf https://www.pacificpolymer.org/public.asp?page=home.html ug 8639405 2019-12-18T15:37:02Z 2026-03-31T13:22:22Z C3 misc V Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng In article number 1807434, Dagmar R. D'hooge, Karen De Clerck, and co-workers develop a direct route to control the interfacial bonding between two polymeric materials through molecular diffusion during in situ chemical formation of one of those materials. This route is used to create nanofibrous hybrid materials that have excellent toughness. The image shows a nanofibre ligament bridging a microcrack, resulting in highly toughened hybrid materials. Technology and Engineering Chemistry Electrochemistry Condensed Matter Physics Biomaterials Electronic, Optical and Magnetic Materials http://hdl.handle.net/1854/LU-01GTVCS0KST6X71B8WW5CJ5QEF 10.1002/adfm.201970051 1616-301X 1970051 1 p. 2019 1616-301X 2019 29 8 2019 No license (in copyright) published https://biblio.ugent.be/publication/01GTVCS0KST6X71B8WW5CJ5QEF/file/01GTVDD3MC2VX60G2HQNHYGNTW application/pdf restricted ug 01GTVCS0KST6X71B8WW5CJ5QEF 2023-03-06T12:01:41Z 2026-03-31T08:19:05Z V conference C3 Kim Phan aut author ug_UGent 0000-0001-8660-5251 Elias Van Den Broeck aut author ug_UGent 0000-0002-9609-4333 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Katleen Raes aut author ug_LA23 0000-0003-2382-120X Steven De Meester aut author ug_LA24 0000-0002-5246-3918 23rd Green Chemistry & Engineering conference (GCE) ; 9th International conference on Green and Sustainable Chemistry (GSC) eng Chemistry Agriculture and Food Sciences http://hdl.handle.net/1854/LU-8620122 2019 2019 2019 No license (in copyright) published https://biblio.ugent.be/publication/8620122/file/8620125 application/pdf ug 8620122 2019-06-21T08:41:48Z 2023-05-08T11:49:48Z C3 conference C1 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Dolores Esquivel aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 19th World Textile conference (AUTEX-2019): Textiles at the crossroads eng Nanofibrous materials produced via electrospinning are characterized by a high porosity, large specific surface area, and high pore interconnectivity and, therefore, show potential for, e.g., separation and filtration. The development of more inert nanofibers with higher thermal and chemical resistance extends the application field. Silica nanofibrous membranes produced by direct electrospinning of a sol–gel solution without a sacrificing carrier meet these challenging demands. A combination of hydrolysis and condensation reactions of the tetraethoxysilane (TEOS) precursor, results in dense silica nanofibers with superior mechanical properties, without a rough and uneven surface, allowing the use in advanced engineering applications. Technology and Engineering Electrospinning Silica Sol-gel synthesis Hydrophobicity Viscosity http://hdl.handle.net/1854/LU-8620308 9789079892068 6 p. 2019 9789079892068 AUTEX 2019 2019 No license (in copyright) published https://biblio.ugent.be/publication/8620308/file/8620309 application/pdf https://biblio.ugent.be/publication/8620308/file/8628435 application/pdf ug 8620308 2019-06-21T14:32:08Z 2023-05-08T11:49:49Z C1 VABB-5 conference C3 Sisi Wang aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ludwig Cardon aut author ug_TW11 0000-0002-4019-612X Polymer Process Engineering 2019 (PPE19) eng Technology and Engineering http://hdl.handle.net/1854/LU-8628560 1 p. 2019 2019 2019 No license (in copyright) published https://biblio.ugent.be/publication/8628560/file/8628566 application/vnd.openxmlformats-officedocument.wordprocessingml.document restricted ug 8628560 2019-09-17T13:13:47Z 2023-05-08T11:50:06Z C3 journalArticle Article A1 Lucy Ciera aut author Lynda Beladjal aut author ug_UGent 0000-0002-5755-7235 Lieve Van Landuyt aut author ug_TW11 David Menger aut author Maarten Holdinga aut author Johan Mertens aut author ug_UGent Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Tom Gheysens aut author ug_UGent 0000-0002-8185-8986 eng Recently, the use of repellents for preventing the transmission of mosquito-borne diseases is getting increasingly more attention. However, most of the current repellents are volatile in nature and must be frequently re-applied as their efficacy is only limited to a short period of time. Therefore, a slow release and abrasion-resistant mechanism is needed for prolonging the protection time of the repellents. The focus of this study is on the direct micro-encapsulation of repellents from an emulsion and integration of already encapsulated repellents into nanofibres via electrospinning. Different repellents were electrospun in polyvinyl alcohol (PVA) nanofibrous structures, namely p-menthane-3,8-diol micro-capsules, permethrin, chilli and catnip oil. The repellents were successfully incorporated in the nanofibres and the tensile properties of the resulting samples did not have a significant change. This means that the newly created textiles were identical to current PVA nanofibrous textiles with the added benefit of being mosquito repellent. Principally, all incorporated repellents in the nanofibrous structures showed a significantly reduced number of mosquito landings compared to the control. Consequently, the currently described method resulted in a new and very effective repelling textile material that can be used in the prevention against mosquito-associated diseases. Medicine and Health Sciences Technology and Engineering electrospinning mosquito repellent emulsion micro-capsules INSECT REPELLENTS ENCAPSULATION MORPHOLOGY http://hdl.handle.net/1854/LU-8627257 10.1098/rsos.182139 000482674500007 2054-5703 182139 12 p. 2019 2054-5703 2019 6 8 2019 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8627257/file/8627465 application/pdf ug 8627257 2019-09-06T13:01:13Z 2023-05-08T11:50:03Z A1 VABB-1 conference C3 Sander Bossier aut author Parviz Gohari Derakhshandeh aut author ug_UGent 0000-0001-9655-6019 Anna Kaczmarek aut author ug_WE06 0000-0001-5254-8762 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Tom Gheysens aut author ug_UGent 0000-0002-8185-8986 Pascal Van Der Voort aut author ug_WE06 0000-0002-1248-479X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Peter Dubruel aut author ug_WE07 0000-0002-5928-7726 Karen Leus aut author ug_TW17 ug_WE06 20th Netherlands' Catalysis and Chemistry Conference (NCCC XX) eng Chemistry http://hdl.handle.net/1854/LU-8608211 2019 2019 2019 No license (in copyright) published https://biblio.ugent.be/publication/8608211/file/8609213 application/pdf ug 8608211 2019-03-18T10:49:13Z 2023-05-08T11:49:24Z C3 journalArticle A4 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 dut http://hdl.handle.net/1854/LU-8609881 0040-5280 1 p. 2019 0040-5280 Deinze Prof. Dr. em. M. Van Parys 2019 1 51 51 2019 No license (in copyright) published https://biblio.ugent.be/publication/8609881/file/8609891 application/pdf restricted ug 8609881 2019-03-28T10:45:09Z 2026-03-31T14:57:12Z A4 VABB-1 conference C3 Olivier Verschatse aut author 0000-0001-7732-6007 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 FEA Research Symposium 2019 eng Biology and Life Sciences http://hdl.handle.net/1854/LU-8612751 1 p. 2019 No license (in copyright) published https://biblio.ugent.be/publication/8612751/file/8636059 application/pdf ug 8612751 2019-04-23T09:57:03Z 2026-03-31T14:57:12Z C3 journalArticle Article A1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering Chemistry Electrochemistry Electronic Optical and Magnetic Materials Condensed Matter Physics Biomaterials http://hdl.handle.net/1854/LU-8598945 10.1002/adfm.201807434 000459826500018 1616-301X 1807434 2019 1616-301X Wiley 2019 29 8 2019 No license (in copyright) published https://biblio.ugent.be/publication/8598945/file/8598947 application/pdf restricted https://biblio.ugent.be/publication/8598945/file/8598951 application/pdf ug 8598945 2019-02-04T13:04:30Z 2026-03-31T14:57:12Z A1 VABB-1 conference C1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Timo Meireman aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 AUTEX 2019, 19th World Textile Conference on Textiles at the Crossroads eng Fiber reinforced polymer composites are the go-to materialfor designing applications thatrequire a high strength and stiffness at minimal weight such as aerospace structures, wind turbines or ultralight vehicles. However, delamination between the reinforcing plies remains a major occurring failure type.Interleaving electrospun nanofibres between the reinforcing plies has proven to be a viable interlaminar toughening method which significantly limitsthe occurrence of delamination failure in composites. This contributionsgives an overview into the relationship between the electrospun nanofibre properties and the resulting toughenedcomposites. Technology and Engineering COMPOSITES FRACTURETOUGHNESS ELECTROSPINNING NANOFIBERS CRACK GROWTH http://hdl.handle.net/1854/LU-8619799 9789079892068 5 p. 2019 9789079892068 Open Journal System of Ghent University 2019 2019 No license (in copyright) published https://biblio.ugent.be/publication/8619799/file/8619800 application/pdf ug 8619799 2019-06-19T06:43:26Z 2026-03-31T14:57:12Z C1 VABB-5 conference C3 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 20th International Sol-Gel conference (Sol-Gel 2019): The next generation eng Chemistry Technology and Engineering http://hdl.handle.net/1854/LU-8627516 2019 St Petersburg, Russia ITMO University ; ISGS (International Sol-Gel Society) 2019 48 49 2019 No license (in copyright) published https://biblio.ugent.be/publication/8627516/file/8627520 application/pdf restricted https://biblio.ugent.be/publication/8627516/file/8627521 application/pdf restricted ug 8627516 2019-09-09T14:08:46Z 2026-03-31T14:57:12Z C3 journalArticle Article A1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Nuray Kizildag aut author ug_UGent Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Electrospun nanofibre interleaving has a great potential for toughening of composite laminates as an effective, safe and industrially relevant method. Although many studies showcase large increases in delamination resistance, these are typically obtained under either Mode I or Mode II loading and for a wide variety of nanofibres. Here, we present a more general approach towards simultaneous excellent Mode I and Mode II delamination resistance using a single nanofibre system without the need for additional chemical modification steps or speciality polymers. It is illustrated based on the concept of interdiffusion of polycaprolactone nanofibres during the curing process into the epoxy matrix resin for improved adhesion. The results show that for a simultaneous increase in Mode I and Mode II delamination resistance, the adhesion and the fibre morphology of the nanofibres are crucial. The methodology is then expanded to allow for industrial relevant working windows by core-shell structured polyamide/polycaprolactone nanofibres. This approach results in a of 650 ± 50 J m-2 (+ca. 60% vs. virgin material) and a of 3160 ± 35 J m-2 (+ca. 60% vs. virgin material). Technology and Engineering General Engineering Ceramics and Composites http://hdl.handle.net/1854/LU-8612400 10.1016/j.compscitech.2019.03.019 000466455100018 0266-3538 1879-1050 2019 0266-3538 1879-1050 2019 175 143 150 2019 No license (in copyright) published https://biblio.ugent.be/publication/8612400/file/8612401 application/pdf restricted https://biblio.ugent.be/publication/8612400/file/8612402 application/pdf https://biblio.ugent.be/publication/8612400/file/8612403 application/pdf ug 8612400 2019-04-17T05:01:11Z 2026-03-31T14:57:12Z A1 VABB-1 journalArticle Article A1 Ruben Geerinck aut author Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Geert De Clercq aut author ug_TW11 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Jan Ivens aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Mechanical Engineering General Materials Science Mechanics of Materials http://hdl.handle.net/1854/LU-8598943 10.1016/j.matdes.2018.107578 000458259300008 0264-1275 107578 2019 0264-1275 Elsevier 2019 165 2019 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8598943/file/8598944 application/pdf restricted ug 8598943 2019-02-04T13:02:52Z 2026-03-31T14:57:12Z A1 VABB-1 journalArticle Article A1 Sisi Wang aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Rudinei Fiorio aut author ug_UGent Maling Gou aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ludwig Cardon aut author ug_TW11 0000-0002-4019-612X eng Based on differential scanning calorimetry (DSC), X-ray diffraction (XRD) analysis, polarizing microscope (POM), and scanning electron microscopy (SEM) analysis, strategies to close the gap on applying conventional processing optimizations for the field of 3D printing and to specifically increase the mechanical performance of extrusion-based additive manufacturing of poly(lactic acid) (PLA) filaments by annealing and/or blending with poly(3-hydroxybutyrate) (PHB) were reported. For filament printing at 210 °C, the PLA crystallinity increased significantly upon annealing. Specifically, for 2 h of annealing at 100 °C, the fracture surface became sufficiently coarse such that the PLA notched impact strength increased significantly (15 kJ m−2). The Vicat softening temperature (VST) increased to 160 °C, starting from an annealing time of 0.5 h. Similar increases in VST were obtained by blending with PHB (20 wt.%) at a lower printing temperature of 190 °C due to crystallization control. For the blend, the strain at break increased due to the presence of a second phase, with annealing only relevant for enhancing the modulus.</jats:p> Technology and Engineering extrusion-based additive manufacturing poly(lactic acid) poly(3-hydroxybutyrate) annealing notched impact strength http://hdl.handle.net/1854/LU-8628993 10.3390/polym11091529 000489104300154 2073-4360 1529 13 p. 2019 2073-4360 2019 11 9 2019 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8628993/file/8628994 application/pdf ug 8628993 2019-09-20T12:52:31Z 2026-03-31T14:57:12Z A1 VABB-1 conference C3 Özlem İpek Kalaoglu Altan aut author ug_UGent Bahareh Azimi aut author Serena Danti aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 EUPOC 2019 – Electrospinning and related techniques : from design to production of advanced polymer materials and devices eng Technology and Engineering http://hdl.handle.net/1854/LU-8671577 2019 Como 2019 68 68 2019 No license (in copyright) published https://biblio.ugent.be/publication/8671577/file/8671579 application/pdf ug 8671577 2020-08-11T08:58:18Z 2023-05-08T11:51:41Z C3 journalArticle Article A1 Yin Li aut author Maarten Vergaelen aut author ug_UGent Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng In this study, benzophenone was introduced onto partially hydrolyzed poly(2-ethyl-2-oxazoline) (PEtOx-PEI) to prepare a poly(2-ethyl-2-oxazoline)-benzophenone (PEtOx-BP) copolymer, which was used to produce water stable nanofibers via aqueous electrospinning and photocrosslinking. Three different ultraviolet (UV) irradiation methods, i.e. pre-crosslinking before electrospinning, in-situ crosslinking during electrospinning and post-crosslinking after electrospinning, were used to prepare crosslinked nanofibers. The influence of UV-irradiation at these different stages of the nanofiber production process was investigated in terms of alterations in viscosity, nanofiber morphology and water stability of the fibers. It was shown that pre-crosslinking the polymer solutions had a great influence on the solution viscosity which could both positively or negatively alter the stability of the electrospinning process. Whereas the strategy of crosslinking nanofibers during the production process did not lead to uniform nor water-stable nanofibers, the pre-crosslinking and post-crosslinking strategies greatly increased the water stability of the nanofibers. In both techniques the crosslinking density and therefore water solubility can be easily tuned by manipulating the polymer concentration, UV-irradiation time and membrane thickness. Complete insolubility, i.e. the formation of crosslinked networks, was achieved by the post-cross linking strategy. This work provides straightforward methods to increase the water stability of the PEtOx nanofibers, which will definitely be of great value to biomedical applications such as drug delivery and tissue engineering. Chemistry Technology and Engineering Electrospinning Poly(2-ethyl-2-oxazoline) Benzophenone UV-irradiation Crosslinking Nanofibers POLY(ETHYLENE OXIDE) NANOPARTICLES CHEMISTRY FIBERS http://hdl.handle.net/1854/LU-8586957 10.1016/j.eurpolymj.2018.12.030 000461001700003 0014-3057 2019 0014-3057 2019 112 24 30 2019 No license (in copyright) published https://biblio.ugent.be/publication/8586957/file/8586958 application/pdf https://biblio.ugent.be/publication/8586957/file/8586959 application/pdf restricted ug 8586957 2019-01-02T11:11:27Z 2026-03-31T14:54:18Z A1 VABB-1 journalArticle Article A1 Özlem İpek Kalaoglu Altan aut author ug_UGent Yin Li aut author Rebecca McMaster aut author Aby Shaw aut author Zhanyao Hou aut author ug_UGent 0000-0002-6189-1578 Maarten Vergaelen aut author ug_UGent Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Tim R Dargaville aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Poly(2-ethyl-2-oxazoline)s (PEtOx) have received substantial attention for various potential biomedical applications, yet they have not been explored as scaffold materials to any extensive degree. A major challenge to open up future applications is to overcome the poor water stability of these materials. We here propose a universal crosslinking strategy for these materials based on a partial acidic hydrolysis of PEtOx to poly[(2-ethyl-2-oxazoline)-co-(ethylenimine)] (PEtOx-EI) followed by exposure to glutaraldehyde vapour to create water-stable scaffolds. To demonstrate the utility of this approach two different fabrication techniques were used to make 2-and 3-dimensional structures, namely solution electrospinning and fused deposition modelling (FDM). Because the partial hydrolysis results in increased hydrophilicity, the crosslinking conditions for the fine PEtOx-EI nanofibers were carefully tuned to enable crosslinking of the nanofibers prior to a loss of the nanofibrous morphology. Conversely, for the thicker FDM printed PEtOx-EI structures the crosslinking conditions are more tolerant. Crosslinking with glutaraldehyde vapour provided water-stability to both 2D and 3D constructs, which is an important asset for biomedical applications. Technology and Engineering Chemistry Electrospinning Fused deposition modelling Poly(2-ethyl-2-oxazoline) Glutaraldehyde Crosslinking Bioextrusion TISSUE ENGINEERING APPLICATIONS 3-DIMENSIONAL SCAFFOLDS PORE-SIZE NANOFIBERS POLY(2-OXAZOLINE)S FABRICATION HYDROGELS http://hdl.handle.net/1854/LU-8644205 10.1016/j.eurpolymj.2019.109218 000498309000063 0014-3057 1873-1945 109218 8 p. 2019 0014-3057 1873-1945 2019 120 2019 No license (in copyright) published https://biblio.ugent.be/publication/8644205/file/8644211 application/pdf restricted ug 8644205 2020-01-23T13:52:45Z 2026-03-31T14:54:18Z A1 VABB-1 conference C3 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 6th International conference on Electrospinning (Electrospin 2019) eng Technology and Engineering Chemistry Aqueous electrospinning nanofibers optical sensors thermoresponsive polymers stimuli-sensitive dyes http://hdl.handle.net/1854/LU-8620866 2019 Shanghai, PR China Donghua University 2019 202 202 2019 No license (in copyright) published https://biblio.ugent.be/publication/8620866/file/8620868 application/pdf restricted ug 8620866 2019-06-26T11:02:18Z 2026-03-31T14:54:18Z C3 conference Meeting Abstract C3 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 257th National Meeting of the American-Chemical-Society (ACS) eng Technology and Engineering Chemistry http://hdl.handle.net/1854/LU-8644206 000478861206146 0065-7727 Abstract 552 1 p. 2019 0065-7727 2019 257 2019 No license (in copyright) published https://biblio.ugent.be/publication/8644206/file/8669380 application/pdf restricted ug 8644206 2020-01-23T13:52:47Z 2026-03-31T14:54:18Z C3 conference C3 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 MRS Spring meeting & exhibit 2018 eng Chemistry Physics and Astronomy http://hdl.handle.net/1854/LU-8569249 2018 2018 2018 published ug 8569249 2018-07-18T12:22:30Z 2023-05-08T11:47:29Z C3 conference C3 Sisi Wang aut author Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Kim Ragaert aut author ug_UGent 0000-0002-1498-6785 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ludwig Cardon aut author ug_TW11 0000-0002-4019-612X Polymer Engineering International / 10th UK-China AMRI Research Workshop eng http://hdl.handle.net/1854/LU-8582803 T11 2018 Bradford, UK 2018 2018 Information pending published https://biblio.ugent.be/publication/8582803/file/8582811 application/msword ug 8582803 2018-11-27T14:53:59Z 2023-05-08T11:48:24Z C3 conference C1 Sisi Wang aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ludwig Cardon aut author ug_TW11 0000-0002-4019-612X António Pontes edt editor International Conference on Polymers and Moulds Innovations - PMI 2018 eng http://hdl.handle.net/1854/LU-8583440 978-989-20-8809-9 P178 5 p. 2018 978-989-20-8809-9 Minho - Portugal Institute of Polymers and Composites, University of Minho, Portugal 2018 2018 Information pending published https://biblio.ugent.be/publication/8583440/file/8583446 application/pdf ug 8583440 2018-11-30T14:24:52Z 2023-05-08T11:48:25Z C1 VABB-5 conference C3 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 ELEN Electrospinning for Energy 2018 eng Technology and Engineering Electrospinning silica ceramics http://hdl.handle.net/1854/LU-8589851 2018 2018 2018 No license (in copyright) published https://biblio.ugent.be/publication/8589851/file/8589868 application/vnd.openxmlformats-officedocument.wordprocessingml.document restricted ug 8589851 2019-01-24T07:38:14Z 2023-05-08T11:48:38Z C3 misc V Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Electrochemistry Condensed Matter Physics Biomaterials Electronic, Optical and Magnetic Materials http://hdl.handle.net/1854/LU-01GTVBJCKHZE2PV15KM46MSE78 10.1002/adfm.201870313 1616-301X 1616-3028 1870313 1 p. 2018 1616-301X 1616-3028 Wiley 2018 28 44 2018 No license (in copyright) published https://biblio.ugent.be/publication/01GTVBJCKHZE2PV15KM46MSE78/file/01GTVBNB54YAYYS6T3EJ09MR93 application/pdf restricted ug 01GTVBJCKHZE2PV15KM46MSE78 2023-03-06T11:40:35Z 2026-03-31T05:48:29Z V conference C3 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Eugene Smit edt editor Electrospin 2018 International Conference eng http://hdl.handle.net/1854/LU-8556768 1 p. 2018 Zuid-Afrika The Stellenbosch Nanofiber Company (Pty) Ltd. 2018 29 29 2018 No license (in copyright) published https://biblio.ugent.be/publication/8556768/file/8556772 application/pdf ug 8556768 2018-03-21T10:07:20Z 2026-03-31T14:57:13Z C3 journalArticle Article A1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Iline Steyaert aut author ug_UGent Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Camille Goudenhooft aut author Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng http://hdl.handle.net/1854/LU-8598932 10.3390/nano8070551 000442523100102 2079-4991 551 2018 2079-4991 MDPI AG 2018 8 7 2018 No license (in copyright) published https://biblio.ugent.be/publication/8598932/file/8598949 application/pdf https://biblio.ugent.be/publication/8598932/file/8598950 application/pdf ug 8598932 2019-02-04T12:54:30Z 2026-03-31T14:57:13Z A1 VABB-1 journalArticle Article A1 Eva Loccufier aut author ug_TW11 0000-0001-7045-2721 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Nanofibrous materials produced through electrospinning are characterized by a high porosity, large specific surface area, and high pore interconnectivity and, therefore, show potential for, e.g., separation and filtration. The development of more inert nanofibers with higher thermal and chemical resistance extends the application field to high-end purification. Silica nanofibrous membranes produced by direct electrospinning of a sol-gel solution without a sacrificing carrier, starting from tetraethoxysilane, meet these challenging requirements. After electrospinning the membrane is highly hydrophobic. Storage under dry conditions preserves this property. Oppositely, a superhydrophilic membrane is obtained by storage under high humidity (month scale). This switch is caused by the reaction of ethoxy groups, present due to incomplete hydrolysis of the precursor, with moisture in the air, resulting in an increased amount of silanol groups. This transition can be accelerated to hour scale by applying a heat treatment, with the additional increase in cross-linking density for temperatures above 400 degrees C, enabling applications that make use of hydrophobic and hydrophilic membranes by tuning the functionalization. It is showcased that upon designing the water repellent or absorbing nature of the silica material, fast gravity-driven membrane separation of heterogeneous azeotropes can be achieved. Chemistry Technology and Engineering electrospun nanofibrous membranes heterogeneous azeotrope separation silica wettability switch ELECTROSPUN NANOFIBERS WATER SEPARATION FLUX SUPERHYDROPHOBICITY ULTRAFILTRATION MICROFILTRATION PERFORMANCE CONVERSION SURFACES EMULSION http://hdl.handle.net/1854/LU-8574639 10.1002/adfm.201804138 000450367700011 1616-301X 1616-3028 1804138 10 p. 2018 1616-301X 1616-3028 2018 28 44 2018 No license (in copyright) published https://biblio.ugent.be/publication/8574639/file/8574663 application/pdf https://biblio.ugent.be/publication/8574639/file/8574664 application/pdf restricted ug 8574639 2018-09-21T09:12:15Z 2026-03-31T14:57:13Z A1 VABB-1 conference C1 Amaël Cohades aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Charlie Ward aut author Timo Meireman aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Véronique Michaud aut author ECCM18 - 18th European Conference on Composite Materials eng Technology and Engineering http://hdl.handle.net/1854/LU-8623540 8 p. 2018 2018 2018 No license (in copyright) published https://biblio.ugent.be/publication/8623540/file/8623543 application/pdf restricted ug 8623540 2019-07-18T14:31:44Z 2026-03-31T14:57:13Z C1 VABB-5 journalArticle Article A1 Audrey Cuvellier aut author Ana Torre-Muruzabal aut author Nuray Kizildag aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Yannick Ba aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Hubert Rahier aut author eng Organic Chemistry Polymers and Plastics http://hdl.handle.net/1854/LU-8598934 10.1016/j.polymertesting.2018.05.023 000442068000018 0142-9418 2018 0142-9418 Elsevier 2018 69 146 156 2018 No license (in copyright) published https://biblio.ugent.be/publication/8598934/file/8598935 application/pdf restricted ug 8598934 2019-02-04T12:55:30Z 2026-03-31T14:57:13Z A1 VABB-1 journalArticle Article A1 Amaël Cohades aut author Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Charlie Ward aut author Timo Meireman aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Véronique Michaud aut author eng Mechanics of Materials Ceramics and Composites http://hdl.handle.net/1854/LU-8598936 10.1016/j.compositesa.2018.07.002 000440957800052 1359-835X 2018 1359-835X Elsevier 2018 112 485 495 2018 No license (in copyright) published https://biblio.ugent.be/publication/8598936/file/8598937 application/pdf restricted ug 8598936 2019-02-04T12:59:10Z 2026-03-31T14:57:13Z A1 VABB-1 journalArticle Article A1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Amaël Cohades aut author Timo Meireman aut author Jasper Beckx aut author Siebe Spronk aut author Mathias Kersemans aut author ug_TW11 0000-0002-9325-0556 Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Véronique Michaud aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering Nano particles Damage tolerance Electrospinning Toughening Compression after impact CAI http://hdl.handle.net/1854/LU-8543586 10.1016/j.matdes.2017.12.045 000424945300018 0264-1275 14 p. 2018 0264-1275 Elsevier BV 2018 141 5 170 184 2018 No license (in copyright) published https://biblio.ugent.be/publication/8543586/file/8543593 application/pdf restricted ug 8543586 2018-01-04T09:05:30Z 2026-03-31T14:57:13Z A1 VABB-1 journalArticle Article A1 Yin Li aut author Maarten Vergaelen aut author ug_UGent Xiangqiang Pan aut author Filip Du Prez aut author ug_WE07 0000-0001-7727-4155 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Poly(2-oxazoline)-based biomaterials have shown significant potential for various applications in the past decade. Herein, we present a methodology for the design of degradable diselenide-cross-linked nanofibers by aqueous electrospinning of selenol (SeH)-modified poly(2-ethyl-2-oxazoline) (PEtOx). The selenol groups have been introduced into PEtOx by reacting partially hydrolyzed PEtOx (poly(2-ethyl-2-oxazoline-)-co-ethylenimine (PEtOx-EI)) with gamma-butyroselenolactone, whereby ring-opening upon reaction with the secondary amine groups in the polymer backbone yields selenol side chains. Subsequent aqueous electrospinning of the selenol-containing PEtOx was linked water-stable nanofibers, ascribed to the formation of diselenide cross-links. The effects of changes in the experimental parameters and the influence of the selenium content on the electrospinning process were investigated in detail. Dynamic exchange between the remaining free SeH groups and diselenide bonds formed upon cross-linking enabled a tunable dissolution of the PEtOx-based nanofibers, which could be controlled by changing both the temperature and cross-linking density. Furthermore, the dissolution of the diselenide cross-linked nanofibers could also be induced by the exchange of diselenide groups under ultraviolet (UV) irradiation. Chemistry Technology and Engineering DRUG-DELIVERY MECHANICAL-PROPERTIES POLYMERIC NANOFIBERS FACILE SYNTHESIS SCAFFOLDS MEMBRANES LINKING BLOCK NANOPARTICLES BIOMATERIALS http://hdl.handle.net/1854/LU-8586960 10.1021/acs.macromol.8b01113 000442185700072 0024-9297 1520-5835 2018 0024-9297 1520-5835 2018 51 15 6149 6156 2018 No license (in copyright) published https://biblio.ugent.be/publication/8586960/file/8586961 application/pdf restricted ug 8586960 2019-01-02T11:19:08Z 2026-03-31T14:54:18Z A1 VABB-1 journalArticle Article A1 Lieselot De Smet aut author Gertjan Vancoillie aut author ug_UGent Peter Minshall aut author Kathleen Lava aut author ug_UGent Iline Steyaert aut author ug_UGent Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Elke Van De Walle aut author ug_UGent Peter Dubruel aut author ug_WE07 0000-0002-5928-7726 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 eng Here, we introduce a novel concept for the fabrication of colored materials with significantly reduced dye leaching through covalent immobilization of the desired dye using plasmagenerated surface radicals. This plasma dye coating (PDC) procedure immobilizes a preadsorbed layer of a dye functionalized with a radical sensitive group on the surface through radical addition caused by a short plasma treatment. The non-specific nature of the plasmagenerated surface radicals allows for a wide variety of dyes including azobenzenes and sulfonphthaleins, functionalized with radical sensitive groups to avoid significant dye degradation, to be combined with various materials including PP, PE, PA6, cellulose, and PTFE. The wide applicability, low consumption of dye, relatively short procedure time, and the possibility of continuous PDC using an atmospheric plasma reactor make this procedure economically interesting for various applications ranging from simple coloring of a material to the fabrication of chromic sensor fabrics as demonstrated by preparing a range of halochromic materials. Technology and Engineering Chemistry SURFACE-ACTIVE COMPOUNDS ROSE-BENGAL POLY(ETHYLENE) SURFACES TEXTILE MATERIALS NITRAZINE YELLOW CHEMICAL SENSORS PH BRUSHES NANOFIBERS SULFATE http://hdl.handle.net/1854/LU-8561225 10.1038/s41467-018-03583-4 000427592800008 2041-1723 1123 11 p. 2018 2041-1723 2018 9 2018 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) published https://biblio.ugent.be/publication/8561225/file/8561226 application/pdf https://biblio.ugent.be/publication/8561225/file/8561227 application/pdf private ug 8561225 2018-05-08T07:27:31Z 2026-03-31T14:54:18Z A1 VABB-1 conference C3 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Eugene Smit edt editor Electrospin 2018 international conference eng http://hdl.handle.net/1854/LU-8556775 1 p. 2018 Zuid-Afrika Stellenbosch Nanofiber Company (Pty) Ltd. 2018 59 59 2018 No license (in copyright) published https://biblio.ugent.be/publication/8556775/file/8556777 application/pdf restricted https://biblio.ugent.be/publication/8556775/file/8556787 application/pdf ug 8556775 2018-03-21T10:12:16Z 2026-03-31T14:54:18Z C3 journalArticle Article A1 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Sensors play a major role in many applications today, ranging from biomedicine to safety equipment, where they detect and warn us about changes in the environment. Nanofibers, characterized by high porosity, flexibility, and a large specific surface area, are the ideal material for ultrasensitive, fastresponding, and user-friendly sensor design. Indeed, a large specific surface area increases the sensitivity and response time of the sensor as the contact area with the analyte is enlarged. Thanks to the flexibility of membranes, nanofibrous sensors cannot only be applied in high-end analyte detection, but also in personal, daily use. Many different nanofibrous sensors have already been designed; albeit, the most straightforward and easiest-to-interpret sensor response is a visual change in color, which is of particular interest in the case of warning signals. Recently, many researchers have focused on the design of so-called colorimetric nanofibers, which typically involve the incorporation of a colorimetric functionality into the nanofibrous matrix. Many different strategies have been used and explored for colorimetric nanofibrous sensor design, which are outlined in this feature article. The many examples and applications demonstrate the value of colorimetric nanofibers for advanced optical sensor design, and could provide directions for future research in this area. Chemistry Technology and Engineering METAL-HALIDE PEROVSKITES QUANTUM-DOT PHOTODETECTORS CHARGE-CARRIER DYNAMICS NARROW-BAND INFRARED PHOTODETECTORS SOLAR-CELLS RECOMBINATION PHOTOVOLTAICS FORMAMIDINIUM PHOTODIODES colorimetric sensors nanofibers optical sensors solvent-electrospinning http://hdl.handle.net/1854/LU-8541242 10.1002/adfm.201702646 000412675600011 1616-301X 1702646 26 p. 2017 1616-301X 2017 27 38 2017 No license (in copyright) published https://biblio.ugent.be/publication/8541242/file/8541245 application/pdf https://biblio.ugent.be/publication/8541242/file/8561079 application/pdf restricted ug 8541242 2017-12-11T15:44:10Z 2026-03-31T13:12:58Z A1 VABB-1 journalArticle Article A1 A. Cuvellier aut author A. Torre-Muruzabal aut author G. Van Assche aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 H. Rahier aut author eng DIFFERENTIAL SCANNING CALORIMETRY MOLECULAR-SIZE DISTRIBUTION HOLLOW GLASS-FIBERS MICROVASCULAR NETWORKS MECHANICAL-PROPERTIES POLYMERIC MATERIALS COMPOSITES EPOXY CURE ELECTROSPUN http://hdl.handle.net/1854/LU-8541246 10.1016/j.polymertesting.2017.07.013 000411537900038 0142-9418 9 p. 2017 0142-9418 Elsevier BV 2017 62 302 310 2017 No license (in copyright) published https://biblio.ugent.be/publication/8541246/file/8541249 application/pdf restricted https://biblio.ugent.be/publication/8541246/file/8557844 application/pdf ug 8541246 2017-12-11T15:51:32Z 2026-03-31T13:12:58Z A1 VABB-1 journalArticle Article A1 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Paulien Ryckx aut author Jozefien Geltmeyer aut author 0000-0002-1281-2968 Samarendra Maji aut author ug_UGent Paul Van Steenberge aut author ug_TW11 0000-0001-6244-1299 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng With increasing toxicity and environmental concerns, electrospinning from water, i.e., waterborne electrospinning, is crucial to further exploit the resulting nanofiber potential. Most water-soluble polymers have the inherent limitation of resulting in water-soluble nanofibers, and a tedious chemical cross-linking step is required to reach stable nanofibers. An interesting alternative route is the use of thermoresponsive polymers, such as poly(N-isopropylacrylamide) (PNIPAM), as they are water-soluble beneath their lower critical solution temperature (LCST) allowing low-temperature electrospinning while the obtained nanofibers are water-stable above the LCST. Moreover, PNIPAM nanofibers show major potential to many application fields, including biomedicine, as they combine the well-known on off switching behavior of PNIPAM, thanks to its LCST, with the unique properties of nanofibers. In the present work, based on dedicated turbidity and rheological measurements, optimal combinations of polymer concentration, environmental temperature, and relative humidity are identified allowing, for the first time, the production of continuous, bead-free PNIPAM nanofibers electrospun from water. More specifically, PNIPAM gelation was found to occur well below its LCST at higher polymer concentrations leading to a temperature regime where the viscosity significantly increases without compromising, the polymer solubility. This opens up the ecological, water-based production of uniform PNIPAM nanofibers that are stable in water at temperatures above PNIPAM's LCST, making them suitable for various applications, including drug delivery and switchable cell culture substrates. Chemistry Technology and Engineering POLY-N-ISOPROPYLACRYLAMIDE THERMORESPONSIVE POLYMERS DRUG-RELEASE BIOMEDICAL APPLICATIONS AQUEOUS-SOLUTIONS GENE DELIVERY NANOFIBERS TEMPERATURE SENSORS BEHAVIOR poly(N-isopropylacrylamide) aqueous media electrospinning nanofibers lower critical solution temperature rheology http://hdl.handle.net/1854/LU-8536522 10.1021/acsami.7b05074 000406172700091 1944-8244 2017 1944-8244 2017 9 28 24100 24110 2017 No license (in copyright) published https://biblio.ugent.be/publication/8536522/file/8536523 application/pdf restricted https://biblio.ugent.be/publication/8536522/file/8561078 application/pdf ug 8536522 2017-11-08T09:18:46Z 2026-03-31T13:12:28Z A1 VABB-1 conference Proceedings Paper P1 Özgür Ceylan aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 17th World Textile Conference of the Association-of-Universities-for-Textiles (AUTEX) - Shaping the Future of Textiles eng VAPOR SORPTION BEHAVIOR http://hdl.handle.net/1854/LU-8556780 10.1088/1757-899x/254/14/142006 000417214900151 1757-8981 1757-899X UNSP 142006 3 p. 2017 1757-8981 1757-899X IOP Publishing 2017 254 1 3 2017 No license (in copyright) published https://biblio.ugent.be/publication/8556780/file/8556781 application/pdf ug 8556780 2018-03-21T10:20:27Z 2023-05-08T11:47:03Z P1 VABB-5 conference Proceedings Paper P1 Nuray Kizildag aut author ug_UGent Jozefien Geltmeyer aut author 0000-0002-1281-2968 N. Ucar aut author Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 17th World Textile Conference of the Association-of-Universities-for-Textiles (AUTEX) - Shaping the Future of Textiles eng PHOTOCATALYTIC DEGRADATION CHITOSAN NANOFIBERS FIBERS PHOTODEGRADATION NANOPARTICLES IRRADIATION FABRICATION COMPOSITE MECHANISM http://hdl.handle.net/1854/LU-8556783 10.1088/1757-899x/254/10/102007 000417214900120 1757-8981 1757-899X UNSP 102007 6 p. 2017 1757-8981 1757-899X IOP Publishing 2017 254 1 6 2017 No license (in copyright) published https://biblio.ugent.be/publication/8556783/file/8556784 application/pdf ug 8556783 2018-03-21T10:26:53Z 2023-05-08T11:47:03Z P1 VABB-5 conference C3 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 ElectrospinCY_2017 eng http://hdl.handle.net/1854/LU-8556807 1 p. 2017 Cyprus 2017 32 32 2017 No license (in copyright) published https://biblio.ugent.be/publication/8556807/file/8556808 application/pdf ug 8556807 2018-03-21T12:26:38Z 2023-05-08T11:47:03Z C3 conference C1 Ruben Geerinck aut author Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Geert De Clercq aut author ug_TW11 Alessandro Proia aut author ug_TW14 0000-0002-6776-5708 Stijn Matthys aut author ug_TW14 0000-0002-9588-8561 Jan Ivens aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 IMTC2017, 6th edition of the International Conference on Intelligent Textiles and Mass Customisation eng 3D woven fabrics can have a lot of advantages when used as reinforcement in for example composites or concrete elements. These new woven fabrics with integrated prismatic shaped cavities are produced in one single run eliminating a lot of manual labour and in the case of composites lead to an improved resistance against delamination. In this paper, these fabrics are used to produce composites and concrete elements which are subjected to three point bending tests. The first tests show promising results as well for the composites as for the concrete reinforcement. Technology and Engineering 3D woven fabrics 3D composites 3D concrete reinforcement http://hdl.handle.net/1854/LU-8548640 6 p. 2017 2017 2017 No license (in copyright) published https://biblio.ugent.be/publication/8548640/file/8565263 application/pdf restricted ug 8548640 2018-02-20T07:25:06Z 2026-03-31T13:13:39Z C1 VABB-5 conference C1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Timo Meireman aut author Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 ITMC2017 - International Conference on Intelligent Textiles and Mass Customisation eng Fiber reinforced polymer composites are the material of choice for designing applications which require a high strength and stiffness at minimal weight such as aerospace structures, wind turbines or ultralight vehicles. However, delamination between the reinforcing plies remains a major problem as it limits further breakthrough of these materials. Recently, interleaving electrospun nanofibres between the reinforcing plies has proven to be a viable interlaminar toughening method which can significantly limit the occurrence of delamination failure in composite materials. This presentation will give a thorough insight into the relationship between the electrospun nanofibre properties and the resulting tough composites, and as such, allow for engineering novel and damage resistant nanofiber toughened composites. Technology and Engineering composites electrospinning delamination mechanical properties http://hdl.handle.net/1854/LU-8629108 3 p. 2017 Ghent 2017 2017 No license (in copyright) published https://biblio.ugent.be/publication/8629108/file/8629111 application/pdf restricted ug 8629108 2019-09-23T09:08:47Z 2026-03-31T14:57:14Z C1 VABB-5 conference C3 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Timo Meireman aut author Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 ElectrospinCY_2017 eng http://hdl.handle.net/1854/LU-8556913 2017 Nicosia, Cyprus University of Cyprus 2017 62 62 2017 No license (in copyright) published https://biblio.ugent.be/publication/8556913/file/8556914 application/pdf ug 8556913 2018-03-21T21:03:34Z 2026-03-31T14:57:14Z C3 journalArticle Article A1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Sam van der Heijden aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Adding toughening particles to composite laminates is a common approach to increase their delamination resistance. More recently, interleaving the laminated structures with electrospun (thermoplastic) nanofibrous veils is shown to be a viable toughening method. Where toughening composite laminates with nanofibrous interleaves becomes more and more evident under static conditions, the effectiveness under fatigue loadings has yet to be proven. This article provides insight in the nanofibre toughening mechanisms acting under fatigue conditions. Several nanofibre types with a high potential for toughening are considered. A substantial decrease of the delamination propagation rate up to one order of magnitude was obtained for all tested nanofibre types. Furthermore, two distinct zones of delamination behaviour are observed in nanofibre interleaved laminates on exposure to cyclic loading. These insights reveal the crucial design parameters which allow for the production of nanofibre toughened composites with an improved fatigue life. Technology and Engineering Nanocomposites Damage tolerance Fatigue Electrospinning http://hdl.handle.net/1854/LU-8507673 10.1016/j.compositesa.2016.12.004 000394193300002 1359-835X 2017 1359-835X Elsevier BV 2017 94 10 20 2017 No license (in copyright) published https://biblio.ugent.be/publication/8507673/file/8507676 application/pdf restricted ug 8507673 2017-02-06T10:08:32Z 2026-03-31T14:57:14Z A1 VABB-1 conference C3 Timo Meireman aut author Sam van der Heijden aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 ElectrospinCY_2017 eng http://hdl.handle.net/1854/LU-8556812 1 p. 2017 Nicosia, Cyprus University of Cyprus 2017 83 83 2017 No license (in copyright) published https://biblio.ugent.be/publication/8556812/file/8556813 application/pdf ug 8556812 2018-03-21T12:39:20Z 2026-03-31T14:57:14Z C3 conference Proceedings Paper P1 Timo Meireman aut author Sam van der Heijden aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 7th International Conference on Mechanics and Materials in Design (M2D) eng Previous work has shown that electrospun nanofibers can significantly improve the interlaminar fracture toughness of fiber reinforced composites. In this work the effect of the morphology of the toughening polymer is analysed by incorporating five different polycaprolactone (PCL) structures (nanofibers, microfibers, microspheres, dense films and PCL spray coated glass fibres) in the interlaminar regions (van der Heijden, 2016). nano-structures resin transfer moulding (RTM) delamination http://hdl.handle.net/1854/LU-8569300 000427886600095 978-989-98832-7-7 2 p. 2017 978-989-98832-7-7 Porto Inegi-feup 2017 551 552 2017 No license (in copyright) published https://biblio.ugent.be/publication/8569300/file/8569395 application/pdf ug 8569300 2018-07-19T15:06:15Z 2026-03-31T14:57:14Z P1 VABB-5 journalArticle Article A1 Sam van der Heijden aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Kevin De Bruycker aut author ug_UGent 0000-0002-1438-4872 Robin Simal aut author Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Chemistry INTERLAMINAR FRACTURE-TOUGHNESS TRIAZOLINEDIONE CLICK CHEMISTRY CARBON FIBER/EPOXY COMPOSITE MECHANICAL-PROPERTIES MODE-I NANOFIBROUS MATS PHASE-SEPARATION EPOXY COMPOSITE NANOCOMPOSITES INTERFACE Nano composites Resin transfer molding (RTM) Delamination SBS Electrospinning http://hdl.handle.net/1854/LU-8507013 10.1016/j.compstruct.2016.09.057 000386759100002 0263-8223 1879-1085 2017 0263-8223 1879-1085 2017 159 12 20 2017 No license (in copyright) published https://biblio.ugent.be/publication/8507013/file/8507017 application/pdf restricted ug 8507013 2017-02-02T12:41:17Z 2026-03-31T14:57:14Z A1 VABB-1 journalArticle Article A1 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Helena Teixido aut author Mieke Meire aut author ug_UGent 0000-0002-2038-8714 Thibaut Van Acker aut author ug_WE06 0000-0002-0649-7228 Koen Deventer aut author ug_GE32 0000-0001-8038-1824 Frank Vanhaecke aut author ug_CA05 ug_WE06 0000-0002-1884-3853 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Earth and Environmental Sciences Chemistry TiO2 nanoparticles Photodegradation Polyamide nanofibers Silica nanofibers Isoproturon PHOTOCATALYTIC DEGRADATION COMPOSITE SYSTEMS NANOPARTICLES ISOPROTURON POLLUTANTS TITANIA OXIDATION FIBERS DYE http://hdl.handle.net/1854/LU-8510809 10.1016/j.seppur.2017.02.037 000397688200057 1383-5866 2017 1383-5866 2017 179 533 541 2017 No license (in copyright) published https://biblio.ugent.be/publication/8510809/file/8510813 application/pdf private https://biblio.ugent.be/publication/8510809/file/8535005 application/pdf restricted https://biblio.ugent.be/publication/8510809/file/8561083 application/pdf ug 8510809 2017-02-22T15:23:20Z 2026-03-31T14:30:00Z A1 VABB-1 conference C3 Ruben Geerinck aut author Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Geert De Clercq aut author ug_TW11 Wouter De Corte aut author ug_TW14 0000-0002-9416-3593 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Jan Ivens aut author Joris Degrieck aut author ug_UGent 0000-0001-9388-6506 SV Lomov edt editor L Gorbatikh edt editor Y Swolfs edt editor eng http://hdl.handle.net/1854/LU-8509636 2 p. 2017 Leuven KU Leuven 2017 1 2 2017 No license (in copyright) published https://biblio.ugent.be/publication/8509636/file/8509639 application/pdf ug 8509636 2017-02-15T14:11:10Z 2026-03-31T14:29:53Z C3 conference C3 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 ElectrospinCY_2017 eng http://hdl.handle.net/1854/LU-8556809 1 p. 2017 Nicosia, Cyprus University of Cyprus 2017 81 81 2017 No license (in copyright) published https://biblio.ugent.be/publication/8556809/file/8556811 application/pdf ug 8556809 2018-03-21T12:33:02Z 2026-03-31T14:54:18Z C3 journalArticle Article A1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Sam van der Heijden aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Kirk Schanze edt editor eng Today, fiber-reinforced polymer composites are a standard material in applications where a high stiffness and strength are required at minimal weight, such as aerospace structures, ultralight vehicles, or even flywheels for highly efficient power storage systems. Although fiber-reinforced polymer composites show many advantages compared to other materials, delamination between reinforcing plies remains a major problem limiting further breakthrough. Traditional solutions that have been proposed to toughen the interlaminar region between reinforcing plies have already reached their limit or have important disadvantages such as a high cost or the need for adapted production processes. Recently, electrospun nanofibers have been suggested as a more viable interlaminar toughening method. Although the expected benefits are numerous, the research on composite laminates enhanced with electrospun nanofibrous veils is still very limited. The work that has been done so far is almost exclusively focused on interlaminar fracture toughness tests with different kinds of nanofibers, where typically a trial and error approach has been used. A thorough understanding of the micromechanical fracture mechanisms and the parameters to obtain toughened composites has not been reported as of yet, but it is crucial to advance the research and design highly damage-resistant composites. This article provides such insight by analyzing the nanofiber toughening effect on three different levels for several nanofiber types. Only by combining the results from different levels, a thorough understanding can be obtained. These levels correspond to the hierarchical nature of a composite: the laminate, the interlaminar region, and the matrix resin. It is found that each level corresponds to certain mechanisms that result in a toughening effect. The bridging of microcracks by electrospun nanofibers is the main toughening mechanism resulting in damage resistance. Nevertheless, the way in which the nanofiber bridging mechanism expresses itself is different for each scale and dependent on parameters linked to a certain scale. The multiscale analysis of the toughening mechanisms reported in this paper is therefore crucial for understanding the behavior of nanofiber toughened composites, and as such allows for designing novel, damage-resistant, nanofiber-toughened materials. Technology and Engineering nanofiber bridging fracture toughness electrospinning nanocomposites veils fiber reinforced polymer DELAMINATION STRENGTH delamination INTERLAMINAR FRACTURE-TOUGHNESS MODE-I CARBON/EPOXY COMPOSITES CURING CHARACTERISTICS POLYMER DIFFUSION PHASE-SEPARATION EPOXY MATRIX NANOCOMPOSITES http://hdl.handle.net/1854/LU-7202753 10.1021/acsami.6b02247 000375521000070 1944-8252 2016 1944-8252 2016 8 18 111806 11818 2016 No license (in copyright) published https://biblio.ugent.be/publication/7202753/file/7202772 application/pdf restricted http://pubs.acs.org/journal/aamick ug 7202753 2016-05-02T13:41:53Z 2026-03-31T13:21:57Z A1 VABB-1 conference C3 Sam van der Heijden aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Dario Pisignano edt editor Luana Persano edt editor Andrea Camposeo edt editor 4th International Conference on Electrospinning (ELECTROSPIN 2016) eng Fiber reinforced polymer composite laminates have become a standard material in applications were a high stiffness and high strength are required at minimal weight. Nevertheless, delamination between reinforcing plies and brittle matrix fracture remain the most important failure modes that are encountered in service for laminated composite materials. Although traditional solutions exist to toughen the interlaminar region between reinforcing plies, these systems often have important disadvantages which makes it too difficult to apply them to industrial scale. Recently, electrospun nanofibers have been suggested as an interlaminar toughening method which is much more viable as the electrospinning is relatively straightforward and scalable while the nanofibers do not affect the composite production process. Nevertheless, although the expected benefits are numerous, the research on composite laminates enhanced with electrospun nanofibrous veils is still very limited. A thorough understanding of the micromechanical fracture mechanisms and the parameters to obtain toughened composites have not been determined as of yet, but it is crucial in order to advance the research into these materials. In this presentation we would like to provides such insights by analyzing the nanofiber toughening effect on three different levels simultaneously for several nanofiber types: (i) the nano reinforced epoxy level, (ii) the interlaminar level and (iii) the laminate level. It was found that each level corresponds to certain (micro)mechanisms that result in a toughening effect. The bridging of microcracks by electrospun nanofibers is the main toughening mechanisms present on all levels. Nevertheless, the obtained increase in interlaminar fracture toughness on the interlaminar and laminate level is dependent on many more parameters which have been overlooked until now and are exposed by our multiscale analysis. In this presentation emphasis will be given on the effect of the mechanical properties of the nanofiber and how it influences the fracture toughness of the composites on these different levels. Technology and Engineering http://hdl.handle.net/1854/LU-8034167 2016 Otranto, Italy Universita del Salento 2016 1 1 2016 No license (in copyright) published https://biblio.ugent.be/publication/8034167/file/8034173 application/pdf restricted https://biblio.ugent.be/publication/8034167/file/8034327 application/pdf restricted http://conference.unisalento.it/ocs/index.php/electrospin/electrospin2016 ug 8034167 2016-07-12T11:58:08Z 2026-03-31T13:21:12Z C3 conference C3 Ana Torre Muruzabal aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 G Van Assche aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Hubert Rahier aut author Dario Pisignano edt editor Luana Persano edt editor Andrea Camposeo edt editor 4th International Conference on Electrospinning (ELECTROSPIN 2016) eng Composites, whose use has increased significantly the last decades due to their excellent properties, are prone to failure over time, like any other material. Self-healing materials are being developed to extend their lifetime. Today, most self-healing systems are based on the introduction of microcapsules. Although a lot of progress has been made, the effect of introducing such healing feature on the mechanical properties of the neat material is mainly overlooked, with the microcapsules creating potential artefacts in the neat matrix material. The use of a nanovascular network may show a better solution to apply self-healing systems. Therefore in the present paper we created a nanovascular network by pullulan sacrificial electrospun nanofibers, analysed the flexural properties and compared them to those of the neat matrix material as well as reported microcapsule-based materials. A detailed parameter analysis of the electrospinning process allowed for the production of tailored pullulan nanofibers. The introduction of the pullulan nanofibers showed no effect on the strength and modulus of the neat epoxy. On removal of the pullulan, the properties of the resultant nanovascular epoxy matrix system were somewhat reduced relative to the neat epoxy with an effect in proportion to the volume fraction and the diameter of the channels. However very interesting, the decrease of the mechanical properties of the nanovascular epoxy is far lower than on the introduction of microcapsules and opens potentials for a more appropriate introduction of self-healing systems in composite materials. Technology and Engineering http://hdl.handle.net/1854/LU-8035083 2016 Otranto, Italy Universita del Salento 2016 1 1 2016 No license (in copyright) published https://biblio.ugent.be/publication/8035083/file/8035138 application/pdf restricted https://biblio.ugent.be/publication/8035083/file/8035144 application/pdf restricted http://conference.unisalento.it/ocs/index.php/electrospin/electrospin2016 ug 8035083 2016-07-12T16:34:14Z 2026-03-31T13:21:12Z C3 journalArticle Article A1 Godfred Darko aut author Annelies Goethals aut author ug_UGent Nelson Torto aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng AQUEOUS-SOLUTION MEMBRANE FIBERS JET FABRICATION MORPHOLOGY SYSTEM http://hdl.handle.net/1854/LU-8556785 10.1007/s13204-015-0504-9 000381937200006 2190-5509 2190-5517 9 p. 2016 2190-5509 2190-5517 Springer Nature 2016 6 6 837 845 2016 No license (in copyright) published https://biblio.ugent.be/publication/8556785/file/8556786 application/pdf restricted ug 8556785 2018-03-21T10:32:04Z 2023-05-08T11:47:03Z A1 VABB-1 journalArticle Article A1 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Iline Steyaert aut author ug_UGent Gertjan Vancoillie aut author ug_UGent Jozefien Geltmeyer aut author 0000-0002-1281-2968 Kathleen Lava aut author ug_UGent Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Fast-response and easy-to-visualize colorimetric nanofibrous sensors show great potential for visual and continuous control of external stimuli. This makes them applicable in many fields, including wound management, where nanofibers serve as an optimal support material. In this paper, fast responding and user-friendly biocompatible, halochromic nanofibrous sensors are successfully fabricated by incorporating the halochromic dyes Methyl Red and Rose Bengal inside a chitosan/poly(e-caprolactone) nanofibrous matrix. The commonly applied dye-doping technique frequently suffers from dye-leaching, which not only reduces the sensor's sensitivity over time but can also induce adverse effects. Therefore, in this work, dye-immobilization is accomplished by covalent dye-modification of chitosan before blend electrospinning. It is shown that efficient dye-immobilization with minimal dye-leaching is achieved within the biomedical relevant pH-region, without significantly affecting the halochromic behavior of the dyes. This is in contrast to the commonly applied dye-doping technique and other dye-immobilization strategies stated in literature. Moreover, the nanofibers show high and reproducible pH-sensitivity by providing an instantaneous color change in response to change in pH in aqueous medium and when exposed to acidic or basic gases. The results stated within this work are of particular interest for natural (bio) polymers for which covalent modification combined with electrospinning provides a universal method for versatile dye-functionalization of large area nanofibrous membranes with proper dye-immobilization. Technology and Engineering POLYCAPROLACTONE DESIGN CELLULOSE DERIVATIVES NANOFIBERS AZO-DYES OPTICAL SENSORS NITRAZINE YELLOW ROSE-BENGAL CELLULOSE DERIVATIVES DESIGN IMMOBILIZATION POLYCAPROLACTONE IMMOBILIZATION http://hdl.handle.net/1854/LU-8109195 10.1039/c6tb00639f 000379486800003 2050-750X 2016 2050-750X 2016 4 26 4507 4516 2016 No license (in copyright) published https://biblio.ugent.be/publication/8109195/file/8109230 application/pdf restricted https://biblio.ugent.be/publication/8109195/file/8557396 application/pdf ug 8109195 2016-10-11T09:46:34Z 2026-03-31T14:27:46Z A1 VABB-1 conference C3 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 BPG Annual Meeting 2016 und The development of so-called smart materials, i.e. materials that are able to sense and respond to changes in their environment, is a hot topic in today’s research. Halochromic dyes show high potential within this field as pH-changes are visualized by a fast and simple change of color.[1] A smart halochromic sensor can be fabricated by incorporating such halochromic dye into a suitable matrix material, resulting in a custom, user-friendly product, providing clear information in a non-destructive way. Polymer nanofibers are a very well suited matrix material since nanofibrous nonwovens are characterized by a high specific surface area, small pore size, high pore volume and high absorbance capacity, making them ideal candidates for advanced, fast-responding sensor applications.[2] Dye-immobilization is, currently, a major challenge in nanofibrous sensor design as dye-doped solvent electrospinning, i.e.the most commonly applied processing technique, suffers from leaching of the dye out of the nanofibrous network.[3] Our research focuses on dye-immobilization through covalent dye-modification, where the polymer backbone is modified with a halochromic dye before the electrospinning process, providing a covalent linkage between the dye and the polymer. This technique is of particular interest for the application of natural (bio)polymers, such as chitosan.[4] The nanofibrous structure is ideally produced via blend electrospinning, which allows for the selection of a suitable carrier polymer that is widely available and well electrospinnable along with an appropriate amount of dye-modified polymer for the specific application. Of course, the question arises, if the modification of the polymer has a significant influence on the electrospinning process and, moreover, if the halochromic properties of the dye are maintained within the nanofibrous network. Within our research, chitosan was successfully modified and blend electrospun for the production of halochromic nanofibers. We found that the covalent modification could both positively as well as negatively affect the electrospinnability of the polymer. Additionally, dye-migration was significantly reduced within the entire pH-range, without majorly affecting the halochromic properties of the dyes. Future work will include the selection of a dye with a suitable pH-range for the intended application, without negatively affecting the electrospinning process. Nevertheless, our research already showed the great potential of the combination of covalent modification with electrospinning, especially for natural (bio)polymers, as it provides a universal method for versatile dye-functionalization of large-area nanofibrous nonwovens. Technology and Engineering Nanofibers Electrospinning stimuli-sensitive dyes optical sensor http://hdl.handle.net/1854/LU-8604752 2016 2016 129 129 2016 No license (in copyright) published https://biblio.ugent.be/publication/8604752/file/8604754 application/pdf restricted https://biblio.ugent.be/publication/8604752/file/8604755 application/pdf restricted ug 8604752 2019-02-27T15:34:22Z 2023-05-08T11:49:18Z C3 journalArticle Article A1 Thierry De Meyer aut author ug_UGent Iline Steyaert aut author ug_UGent Karen Hemelsoet aut author ug_TW08 0000-0002-6537-9731 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering Halogen bonding Polyamide 6 Dyes Sensor materials Sulfonphthaleine Halochromism DENSITY-FUNCTIONAL THEORY SEAWATER PH MEASUREMENTS ELECTROSPUN NANOFIBERS BROMOPHENOL BLUE PHENOL RED AZO DYES SPECTROPHOTOMETRIC DETERMINATION BROMOCRESOL PURPLE ABSORPTION-SPECTRA SENSITIVE FUNCTION http://hdl.handle.net/1854/LU-6998491 10.1016/j.dyepig.2015.09.007 000368045600030 0143-7208 2016 0143-7208 2016 124 249 257 2016 No license (in copyright) published https://biblio.ugent.be/publication/6998491/file/6998492 application/pdf restricted ug 6998491 2015-12-01T15:20:07Z 2026-03-31T14:23:41Z A1 VABB-1 journalArticle Article A1 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Jonathan De Roo aut author ug_UGent 0000-0002-1264-9312 Freya Van den Broeck aut author ug_UGent José Martins aut author ug_WE07 0000-0001-7350-2253 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng The critical parameters determining the electrospinning of silica nanofibers starting from tetraethoxysilane sols are reported. By controlling the reaction conditions, the rheological properties of the sol allowed for electrospinning without needing the addition of an organic polymer. This allows the polymer removal step, which is deleterious to the fibers and an economic and ecological inconvenience, to be skipped. The effects on the electrospinning process of the viscosity of the sol, the concentration of ethanol, the degree of crosslinking and the size of the colloidal species were studied in depth with ATR-FTIR, Si-29 NMR, H-1 NMR and DLS. Moreover, to separate the contributions of the different parameters three different set-ups for sol preparation were used. An optimum amount of 9 mol L-1 ethanol for electrospinning was determined. In addition, the optimum degree of crosslinking and size of colloidal particles, approximately 3.5-7 nm, were obtained for stable electrospinning and for producing uniform, beadless nanofibers that were stable in time. The optimum viscosity range is in between 100 and 200 mPa s, which is in line with previous work. Using these optimum conditions, continuous electrospinning was carried out for 3 h, resulting in large flexible silica nanofibrous membranes. Technology and Engineering NMR Sol-gel TEOS Nanofibers GEL PROCESS FIBERS FABRICATION COMPOSITE SPECTROSCOPY SPECTRA SOLVENT Electrospinning http://hdl.handle.net/1854/LU-6959183 10.1007/s10971-015-3875-1 000369002400022 0928-0707 2016 0928-0707 2016 77 2 453 462 2016 No license (in copyright) published https://biblio.ugent.be/publication/6959183/file/6959218 application/pdf private https://biblio.ugent.be/publication/6959183/file/8516768 application/pdf restricted https://biblio.ugent.be/publication/6959183/file/8561082 application/pdf ug 6959183 2015-10-13T13:17:24Z 2026-03-31T14:23:13Z A1 VABB-1 journalArticle Article A1 Sam van der Heijden aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Timo Meireman aut author Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Today, fiber reinforced polymer composites are a standard material in applications where a high stiffness and strength are required at minimal weight. Although fiber reinforced polymer composites show many advantages compared to other materials, delamination between reinforcing plies remains a major problem limiting further breakthrough. Previous work has shown that electrospun nanofibers can significantly improve the interlaminar fracture toughness of fiber reinforced composites thus preventing delaminations. In the present paper, the effect of the morphology of the toughening polymer is analyzed by incorporating different polycaprolactone structures in the interlaminar regions. Both Mode I and Mode II interlaminar facture toughness of composites containing five different electrospun morphologies - nanofibers, microfibers, microspheres, dense films, and PCL spray coated glass fibers - were evaluated. Analyzing the fracture behavior of the PCL toughened laminates ensures a better insight in the micro mechanical fracture mechanisms behind the observed interlaminar fracture toughness and results in guidelines on the optimal interleave morphology. The results clearly demonstrate the distribution of PCL in the interlayer has a large effect on the crack path of the delamination and the resulting interlaminar fracture toughness. In order to improve the interlaminar fracture toughness in both Mode I as well as Mode II without adverse effects, porous PCL structures such as PCL nanofibers, microfibers, and micro spheres are much more suitable than non-porous structures such as PCL films or spray-coated glass fibers. Among the porous structures, the nanofibers had an overall better performance with an increase in Mode I and Mode II interlaminar fracture toughness of about 60% and 80% respectively. (C) 2016 Elsevier Ltd. All rights reserved. MECHANICAL-PROPERTIES MODE-I COMPOSITE-MATERIALS FRACTURE-TOUGHNESS NANOFIBROUS MATS EPOXY-RESIN FIBER NANOCOMPOSITES INTERFACE BEHAVIOR Nano-structures Resin transfer moulding (RTM) Delamination http://hdl.handle.net/1854/LU-8507692 10.1016/j.compscitech.2016.09.024 000388775800002 0266-3538 1879-1050 8 p. 2016 0266-3538 1879-1050 Oxford Elsevier Sci Ltd 2016 136 10 17 2016 No license (in copyright) published https://biblio.ugent.be/publication/8507692/file/8507695 application/pdf restricted ug 8507692 2017-02-06T10:25:19Z 2026-03-31T14:29:32Z A1 VABB-1 journalArticle Article A1 Thierry De Meyer aut author ug_UGent Bernd Ensing aut author Sven Rogge aut author ug_TW17 0000-0003-4493-5708 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Evert Jan Meijer aut author Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X eng pH-Sensitive dyes are increasingly applied on polymer substrates for the creation of novel sensor materials. Recently, these dye molecules were modified to form a covalent bond with the polymer host. This had a large influence on the pH-sensitive properties, in particular on the acidity constant (pKa). Obtaining molecular control over the factors that influence the pK(a) value is mandatory for the future intelligent design of sensor materials. Herein, we show that advanced molecular dynamics (MD) methods have reached the level at which the pK(a) values of large solvated dye molecules can be predicted with high accuracy. Two MD methods were used in this work: steered or restrained MD and the insertion/deletion scheme. Both were first calibrated on a set of phenol derivatives and afterwards applied to the dye molecule bromothymol blue. Excellent agreement with experimental values was obtained, which opens perspectives for using these methods for designing dye molecules. Technology and Engineering Chemistry Physics and Astronomy Physical and Theoretical Chemistry Atomic and Molecular Physics and Optics DENSITY-FUNCTIONAL THEORY PH-SENSITIVE FUNCTION TEXTILE MATERIALS AQUEOUS-SOLUTION LIQUID WATER FREE-ENERGY PKA VALUES HALOCHROMIC PROPERTIES SULFONPHTHALEINE DYES NITRAZINE YELLOW acidity dyes/pigments free energy methods molecular dynamics steered molecular dynamics http://hdl.handle.net/1854/LU-8501546 10.1002/cphc.201600734 000388629200018 1439-4235 1439-7641 2016 1439-4235 1439-7641 2016 17 21 3447 3459 2016 Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License (CC BY-NC-ND 4.0) published https://biblio.ugent.be/publication/8501546/file/8501549 application/pdf ug 8501546 2017-01-11T15:16:00Z 2026-03-31T14:29:18Z A1 VABB-1 journalArticle Article A1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Sam van der Heijden aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering Fibre bridging Damage tolerance Nano particles Delamination Electro-spinning INTERLAMINAR FRACTURE-TOUGHNESS MODE-I COMPOSITE-MATERIALS CARBON/EPOXY COMPOSITES ELECTROSPUN FIBERS DAMAGE RESISTANCE PHASE-SEPARATION DELAMINATION INTERLAYERS MECHANISM http://hdl.handle.net/1854/LU-7159952 10.1016/j.compscitech.2015.11.021 000371361900003 0266-3538 2016 0266-3538 Elsevier 2016 124 17 26 2016 No license (in copyright) published https://biblio.ugent.be/publication/7159952/file/7159961 application/pdf restricted ug 7159952 2016-03-23T13:47:34Z 2026-03-31T14:25:06Z A1 VABB-1 journalArticle Article A1 Iline Steyaert aut author ug_UGent Hubert Rahier aut author Sandra Van Vlierberghe aut author ug_WE07 0000-0001-7688-1682 Jos Olijve aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering Modulated temperature differential Cold-gelling scanning calorimetry Cold-water-soluble Gelatin Nanofiber Electrospinning DIFFERENTIAL SCANNING CALORIMETRY ELECTROSPUN NANOFIBERS BIOMEDICAL APPLICATIONS BIOPOLYMER NANOFIBERS DRUG-DELIVERY FIBER MATS NANOPARTICLES SCAFFOLDS SELECTION FILMS http://hdl.handle.net/1854/LU-7159968 10.1016/j.foodhyd.2016.01.016 000371812600022 0268-005X 2016 0268-005X 2016 57 200 208 2016 No license (in copyright) published https://biblio.ugent.be/publication/7159968/file/7160100 application/pdf restricted ug 7159968 2016-03-23T14:02:37Z 2026-03-31T14:25:06Z A1 VABB-1 journalArticle Article A1 Nele Daels aut author ug_UGent Lies Harinck aut author ug_LA24 Annelies Goethals aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 eng Nanofibre membranes are studied extensively in water treatment. Inappropriate storage, however, could alter their performance, e.g. regarding water filtration. This shows the need for investigating this effect in more detail so as to offer a solution for long-term behaviour and stability. In this study, polyamide nanofibre membranes were treated under different conditions, simulating the diverse storage conditions and to simulate their use in water filtration systems. Under all these different settings, nanofibre properties (scanning electron microscope pictures, dimensional changes, tensile strength) and water filtration performance (clean water permeability (CWP), bacterial removal) were investigated. The results demonstrate that, as soon as the dimensional change of a membrane is >2%, the CWP, tensile strength and bacterial removal significantly decrease. These dimensional changes occurred when the membrane became dry after it had been in contact with water. As such, it is important to keep the membrane either in dry or in wet conditions to store its unique properties. When heat-treated, the membrane had a higher tensile strength and kept its morphology and characteristics better during storage. Technology and Engineering electrospinning membrane stability microfiltration nanofibres 3D FIBER ORIENTATION OPTIMIZATION PERFORMANCE PARAMETERS MORPHOLOGY EFFICIENCY NETWORKS HUMIDITY FILTERS MBR http://hdl.handle.net/1854/LU-7197165 10.2166/wst.2016.033 000374979500019 0273-1223 2016 0273-1223 2016 73 8 1920 1926 2016 No license (in copyright) published https://biblio.ugent.be/publication/7197165/file/7197168 application/pdf restricted ug 7197165 2016-04-27T18:06:53Z 2026-03-31T14:25:25Z A1 VABB-1 conference C1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Sam van der Heijden aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 17th European Conference on Composite Materials (ECCM17) eng Delamination between reinforcing plies is one of the most important failure mechanisms encountered in composite laminates during use. Interleaving composites with electrospun nanofibrous veils is proving to be a viable technique in order to increase the delamination resistance. The veils can easily be placed in the resin rich interlayers prior to production and do not require a dispersion in the matrix resin such as traditional particle toughening techniques. Furthermore, they are easily produced by electrospinning. Although there are many expected obvious benefits, the research on composites toughened with electrospun nanofibres is still very limited. We will give thorough insight into the toughening micromechanisms that are present in laminates interleaved with nanofibrous veils. The bridging of microcracks by nanofibres is shown to be the main mechanism resulting in an increased interlaminar fracture toughness. Upon crack extension, nanofibres will bridge the newly formed crack surfaces and take up energy by straining, yielding and fracture. Several parameters are identified which influence this nanofibre bridging, and thus the observed interlaminar fracture toughness. This allows us to accurately determine the crucial parameters and toughening mechanisms which is necessary for the design of advanced damage resistance composite materials. Technology and Engineering Nanofibres Electrospinning Fracture toughness Damage resistance Delaminaion http://hdl.handle.net/1854/LU-8050496 978-3-00-053387-7 2016 978-3-00-053387-7 European Society for Composite Materials (ESCM) 2016 1 8 2016 No license (in copyright) published https://biblio.ugent.be/publication/8050496/file/8050508 application/pdf restricted ug 8050496 2016-08-18T11:37:30Z 2026-03-31T14:27:17Z C1 VABB-5 journalArticle Article A1 Ana Torre Muruzabal aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Guy Van Assche aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Hubert Rahier aut author eng Technology and Engineering RELATIVE-HUMIDITY COMPOSITE NANOCHANNELS EVAPORATION MORPHOLOGY FIBERS http://hdl.handle.net/1854/LU-8040538 10.1016/j.polymertesting.2016.06.026 000382798300010 0142-9418 2016 0142-9418 Elsevier 2016 54 78 83 2016 No license (in copyright) published https://biblio.ugent.be/publication/8040538/file/8040543 application/pdf restricted https://biblio.ugent.be/publication/8040538/file/8557843 application/pdf ug 8040538 2016-07-27T11:47:18Z 2026-03-31T14:27:08Z A1 VABB-1 conference C3 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Iline Steyaert aut author ug_UGent Gertjan Vancoillie aut author ug_UGent Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 4th International conference on Electrospinning (Electrospin 2016) eng Chemistry http://hdl.handle.net/1854/LU-8034213 2016 2016 2016 No license (in copyright) published https://biblio.ugent.be/publication/8034213/file/8034215 application/pdf https://biblio.ugent.be/publication/8034213/file/8034315 application/pdf private ug 8034213 2016-07-12T12:15:20Z 2026-03-31T14:27:04Z C3 conference C3 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Gertjan Vancoillie aut author ug_UGent Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 4th International conference on Electrospinning (Electrospin 2016) eng Chemistry http://hdl.handle.net/1854/LU-8034377 2016 2016 2016 No license (in copyright) published https://biblio.ugent.be/publication/8034377/file/8034402 application/pdf https://biblio.ugent.be/publication/8034377/file/8034396 application/pdf private ug 8034377 2016-07-12T13:53:12Z 2026-03-31T14:27:04Z C3 conference C3 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Gertjan Vancoillie aut author ug_UGent Iline Steyaert aut author ug_UGent Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 EMPA workshop on Electrospinning : Science and Application eng Chemistry http://hdl.handle.net/1854/LU-8035242 2016 St-Gallen, Switzerland EMPA 2016 2016 No license (in copyright) published https://biblio.ugent.be/publication/8035242/file/8035278 application/pdf restricted ug 8035242 2016-07-12T17:01:31Z 2026-03-31T14:27:04Z C3 conference C3 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Iline Steyaert aut author ug_UGent Gertjan Vancoillie aut author ug_UGent Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 2nd International Caparica conference on Chromogenic and Emissive Materials (IC³EM 2016) eng Technology and Engineering http://hdl.handle.net/1854/LU-8127485 9789899963900 abstract O 10B 2016 9789899963900 2016 104 104 2016 No license (in copyright) published https://biblio.ugent.be/publication/8127485/file/8127499 application/pdf restricted ug 8127485 2016-10-26T11:24:46Z 2026-03-31T14:27:57Z C3 conference C3 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 2nd International Caparica conference on Chromogenic and Emissive Materials (IC³EM 2016) eng Chemistry http://hdl.handle.net/1854/LU-8127502 9789899963900 abstract SG 6 (P28) 2016 9789899963900 2016 126 126 2016 No license (in copyright) published https://biblio.ugent.be/publication/8127502/file/8127507 application/pdf restricted ug 8127502 2016-10-26T11:33:15Z 2026-03-31T14:27:57Z C3 conference C3 Sam van der Heijden aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 ELECTROSPIN 2016 - 4th International Conference on Electrospinning eng Technology and Engineering http://hdl.handle.net/1854/LU-8127546 2016 Otranto, Italy 2016 1 1 2016 No license (in copyright) published https://biblio.ugent.be/publication/8127546/file/8127561 application/pdf restricted ug 8127546 2016-10-26T11:45:09Z 2026-03-31T14:27:57Z C3 conference C3 Ana Torre Muruzabal aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Guy Van Assche aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Hubert Rahier aut author ELECTROSPIN 2016 - 4th International Conference on Electrospinning eng Composites, whose use has increased significantly the last decades due to their excellent properties, are prone to failure over time, like any other material. Self-healing materials are being developed to extend their lifetime. Today, most self-healing systems are based on the introduction of microcapsules. Although a lot of progress has been made, the effect of introducing such healing feature on the mechanical properties of the neat material is mainly overlooked, with the microcapsules creating potential artefacts in the neat matrix material. The use of a nanovascular network may show a better solution to apply self-healing systems. Therefore in the present paper we created a nanovascular network by pullulan sacrificial electrospun nanofibers, analysed the flexural properties and compared them to those of the neat matrix material as well as reported microcapsule-based materials. A detailed parameter analysis of the electrospinning process allowed for the production of tailored pullulan nanofibers. The introduction of the pullulan nanofibers showed no effect on the strength and modulus of the neat epoxy. On removal of the pullulan, the properties of the resultant nanovascular epoxy matrix system were somewhat reduced relative to the neat epoxy with an effect in proportion to the volume fraction and the diameter of the channels. However very interesting, the decrease of the mechanical properties of the nanovascular epoxy is far lower than on the introduction of microcapsules and opens potentials for a more appropriate introduction of self-healing systems in composite materials. Technology and Engineering http://hdl.handle.net/1854/LU-8127576 2016 Otranto, Italy 2016 1 1 2016 No license (in copyright) published https://biblio.ugent.be/publication/8127576/file/8127582 application/pdf restricted ug 8127576 2016-10-26T11:49:45Z 2026-03-31T14:27:57Z C3 conference C3 Ella Schoolaert aut author ug_UGent 0000-0003-4345-8225 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 4th International conference on Electrospinning (Electrospin 2016) eng Chemistry http://hdl.handle.net/1854/LU-8127726 2016 2016 2016 No license (in copyright) published https://biblio.ugent.be/publication/8127726/file/8127727 application/pdf restricted ug 8127726 2016-10-26T12:49:50Z 2026-03-31T14:27:58Z C3 conference C3 Stijn Rambour aut author ug_TW11 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Blerina Kolgjini aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Dagmar D'hooge aut author ug_TW11 0000-0001-9663-9893 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 Kim Ragaert edt editor ug_UGent 0000-0002-1498-6785 Laurens Delva edt editor ug_UGent 0000-0001-5845-066X Ludwig Cardon edt editor ug_TW11 0000-0002-4019-612X 7th bi-annual international conference of polymers and moulds innovations eng Technology and Engineering http://hdl.handle.net/1854/LU-8129569 2016 Ghent Universiteit Gent, Department of Materials Science and Engineering 2016 111 111 2016 No license (in copyright) published https://biblio.ugent.be/publication/8129569/file/8129577 application/pdf restricted ug 8129569 2016-10-27T12:15:01Z 2026-03-31T14:27:58Z C3 journalArticle Article A1 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Gertjan Vancoillie aut author ug_UGent Iline Steyaert aut author ug_UGent Bet Breyne aut author Gabriella Cousins aut author Kathleen Lava aut author ug_UGent Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Colorimetric sensors for monitoring and visual reporting of acidic environments both in water and air are highly valuable in various fields, such as safety and technical textiles. Until now sol-gel-based colorimetric sensors are usually nonflexible bulk glass or thin-film sensors. Large-area, flexible sensors usable in strong acidic environments are not available. Therefore, in this study organically modified silicon oxide nanofibrous membranes are produced by combining electrospinning and sol-gel technology. Two pH-indicator dyes are immobilized in the nanofibrous membranes: methyl yellow via doping, methyl red via both doping, and covalent bonding. This resulted in sensor materials with a fast response time and high sensitivity for pH-change in water. The covalent bond between dye and the sol-gel network showed to be essential to obtain a reusable pH-sensor in aqueous environment. Also a high sensitivity is obtained for sensing of HCl and NH3 vapors, including a memory function allowing visual read-out up to 20 min after exposure. These fast and reversible, large-area flexible nanofibrous colorimetric sensors are highly interesting for use in multiple applications such as protective clothing and equipment. Moreover, the sensitivity to biogenic amines is demonstrated, offering potential for control and monitoring of food quality. Chemistry ACID-BASE EQUILIBRIA ELECTROSPUN NANOFIBERS SOL-GEL MATRIX PH-INDICATOR METHYL RED TEXTILE MATERIALS NITRAZINE YELLOW OPTICAL SENSORS GAS NANOPARTICLES http://hdl.handle.net/1854/LU-8166617 10.1002/adfm.201602351 000383609100004 1616-301X 2016 1616-301X 2016 26 33 5987 5996 2016 No license (in copyright) published https://biblio.ugent.be/publication/8166617/file/8166629 application/pdf restricted https://biblio.ugent.be/publication/8166617/file/8561081 application/pdf ug 8166617 2016-11-24T13:08:58Z 2026-03-31T14:28:19Z A1 VABB-1 journalArticle Article A1 Ozlem I Kalaoglu-Altan aut author Bart Verbraeken aut author ug_UGent Kathleen Lava aut author ug_UGent Tugce Nihal Gevrek aut author Rana Sanyal aut author Tim Dargaville aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Amitav Sanyal aut author eng Crosslinked hydrophilic poly(2-oxazoline)-based nanofibers amenable to facile multifunctionalization are fabricated using alkene-containing poly(2-alkyl-2-oxazoline)s (PAOx) via in situ photoinitiated radical thiol-ene crosslinking during electrospinning. The resulting crosslinked nanofibers are demonstrated to be multifunctionalizable using different chemistries as they contain two functional handles, being the alkene moieties from the parent copolymer and the residual thiol groups from the tetra-thiol-based crosslinker. While the thiol groups in these nanofibers could be passivated or conjugated to install functional molecules through thiol-maleimide conjugation, the alkene groups could sequentially be modified with thiol-containing molecules using photoinitiated radical thiol-ene reactions. Utilization of the photochemically induced conjugation of thiol-bearing molecules to the alkene groups on the nanofibers is used to obtain functionalization in a spatially controlled manner. Chemistry POLYMER NANOFIBERS ENE CLICK CHEMISTRY LCST BEHAVIOR TUNABLE LCST FIBERS FUNCTIONALIZATION IMMOBILIZATION CYCLOADDITION STRATEGIES SCAFFOLDS http://hdl.handle.net/1854/LU-8166658 10.1021/acsmacrolett.6b00188 000378578600008 2161-1653 2016 2161-1653 2016 5 6 676 681 2016 No license (in copyright) published https://biblio.ugent.be/publication/8166658/file/8166669 application/pdf restricted ug 8166658 2016-11-24T13:12:07Z 2026-03-31T14:28:19Z A1 VABB-1 journalArticle Article A1 Birgit Stubbe aut author Yin Li aut author Maarten Vergaelen aut author ug_UGent Sandra Van Vlierberghe aut author ug_WE07 0000-0001-7688-1682 Peter Dubruel aut author ug_WE07 0000-0002-5928-7726 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 eng Technology and Engineering Chemistry Electrospinning Poly(2-ethyl-2-oxazoline) Lab scale Pilot scale Aqueous RING-OPENING POLYMERIZATION POLY(2-OXAZOLINE) HYDROGELS BIOMEDICAL APPLICATIONS NANOFIBERS POLYMERS FIBERS 2-ETHYL-2-OXAZOLINE FABRICATION MORPHOLOGY http://hdl.handle.net/1854/LU-8507699 10.1016/j.eurpolymj.2016.09.014 000396952500060 0014-3057 2016 0014-3057 2016 88 724 732 2016 No license (in copyright) published https://biblio.ugent.be/publication/8507699/file/8507704 application/pdf private https://biblio.ugent.be/publication/8507699/file/8520691 application/pdf restricted ug 8507699 2017-02-06T10:31:40Z 2026-03-31T14:29:42Z A1 VABB-1 conference C1 Sam van der Heijden aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Huber Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 20th International Conference on Composite Materials (ICCM-20) eng Delamination and brittle matrix fracture has since long been a problem of fibre reinforced composites. This paper investigates if polycaprolactone (PCL) nanofibre nonwovens can increase the interlaminar fracture toughness of resin transfer moulded glass fibre/epoxy laminates, without causing problems during impregnation and without negatively affecting other (mechanical) properties. The mode I fracture toughness was shown to be dependent on both the nanofibre content as well as on how the nanofibres were introduced into the laminates. Almost 100% improvement in fracture toughness could be achieved by electrospinning the PCL nanofibres on both sides of the glass fibre mats prior to impregnation. This led to a mode I fracture toughness of over 1200 J/m2. It could be concluded that even state of the art infusion resins with a high intrinsic fracture toughness can benefit significantly from nanofibre toughening. Technology and Engineering http://hdl.handle.net/1854/LU-8037278 8 p. 2015 2015 2015 No license (in copyright) published https://biblio.ugent.be/publication/8037278/file/8037313 application/vnd.openxmlformats-officedocument.wordprocessingml.document http://iccm20.org/fullpapers/file?f=dRpeDO2RaA ug 8037278 2016-07-14T15:58:00Z 2026-03-31T13:23:44Z C1 VABB-5 conference Proceedings Paper P1 Iline Steyaert aut author ug_UGent Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Antonella Macagnano edt editor Emiliano Zampetti edt editor Erich Kny edt editor 1st International Workshop on Electrospinning for High Performance Sensing (EHPS) eng Sensors supplying a change in optical properties, easily detectable with the naked eye (visual) or inexpensive equipment such as compact spectrometers (optical), are a very powerful tool to visualise a wide range of parameters, including temperature, light, pH and concentration of chemical substances. Most of these sensors rely on indicator compounds showing a change in optical absorbance (colour) or fluorescence under the influence of a certain parameter. Halochromic dyes, for instance, change colour with pH. Since the use of nanofibres improves sensor sensitivity and response time due to their large surface area to volume ratio, the incorporation of indicator compounds into nanofibres is one of the current challenges in sensor design. This chapter discusses the production of colorimetric and fluorescent nanofibrous membranes for visual and optical monitoring (Sects. 7.3 and 7.4), supplemented by some fundamental information on those sensing systems (Sect. 7.2) and some interesting applications (Sect. 7.5). Technology and Engineering DYE NITRAZINE YELLOW VOLATILE ORGANIC-COMPOUNDS CONJUGATED POLYMER ELECTROSPUN NANOFIBERS CHEMICAL SENSORS AZO-DYES PH SENSOR FLUORESCENCE BIOSENSORS MEMBRANES http://hdl.handle.net/1854/LU-5967681 10.1007/978-3-319-14406-1_7 000364182700009 1434-4904 9783319144061 2015 1434-4904 9783319144061 Springer 2015 157 177 2015 No license (in copyright) published https://biblio.ugent.be/publication/5967681/file/5967800 application/pdf restricted http://www.springer.com/it/book/9783319144054 ug 5967681 2015-05-28T09:14:51Z 2026-03-31T13:23:36Z P1 VABB-5 journalArticle Article A1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Sam van der Heijden aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Irfan Muhammad aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering Preform Fracture toughness BLENDS POLYMER Tackifier Delamination SURFACE FINISH MODIFIED RESIN EPOXY COMPOSITES Resin transfer moulding (RTM) MECHANICAL-BEHAVIOR FRACTURE-TOUGHNESS IMPROVEMENT POLY(METHYL METHACRYLATE) THERMOPLASTIC PREFORMING BINDER http://hdl.handle.net/1854/LU-6880529 10.1016/j.compositesb.2015.05.044 000358968800018 1359-8368 2015 1359-8368 Elsevier 2015 80 145 153 2015 No license (in copyright) published https://biblio.ugent.be/publication/6880529/file/6880555 application/pdf restricted http://www.sciencedirect.com/science/article/pii/S1359836815003583 ug 6880529 2015-07-14T16:01:08Z 2026-03-31T13:22:45Z A1 VABB-1 journalArticle Article A1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Sam van der Heijden aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering NANOCOMPOSITES DELAMINATION INTERLAYERS MORPHOLOGY Nano particles Delamination Damage tolerance Electro-spinning Fibre bridging EPOXY MATRIX INTERLAMINAR FRACTURE-TOUGHNESS MODE-I CURING CHARACTERISTICS DAMAGE RESISTANCE PHASE-SEPARATION http://hdl.handle.net/1854/LU-6880573 10.1016/j.compscitech.2015.06.021 000362132900031 0266-3538 2015 0266-3538 Elsevier 2015 117 244 256 2015 No license (in copyright) published https://biblio.ugent.be/publication/6880573/file/6880579 application/pdf restricted http://www.sciencedirect.com/science/article/pii/S0266353815300282 ug 6880573 2015-07-14T16:15:31Z 2026-03-31T13:22:45Z A1 VABB-1 conference Proceedings Paper P1 Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Sam van der Heijden aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 20th International Conference on Composite Materials (ICCM-20) eng Bisphenol A based polyester is commonly used in the industry as a binder, or tackifier, to produce cost-saving preforms in Liquid Composite Moulding processes such as Vacuum Assisted Resin Transfer Moulding (VARTM). However, it is often reported that the presence of these polyesters has a detrimental effect on the mechanical properties of the resulting composite laminates. This study shows that interlaminar toughness can be increased without negatively affecting other properties by a applying a bisphenol A based polyester binder. Both polyester modified epoxy resin as well as polyester modified glass/epoxy laminates are studied. It is shown that the presence of the polyester has a profound effect on the curing characteristics and glass transition temperature of the epoxy resin. Furthermore, fracture toughness experiments (Single Edge Notch Bending) show that there is an optimum polyester concentration which leads to a toughened epoxy matrix. Composite laminates are produced from binder coated glass fibre plies with VARTM. Double Cantilever Beam fracture experiments show that the polyester binder increases the Mode I interlaminar toughness by 60 %. Three point bending experiments show that the flexural properties were not negatively affected by the presence of the polyester in the interlaminar region between plies. Technology and Engineering Double cantilever beam Fracture toughness Binder/tackifier Vacuum assisted resin transfer moulding http://hdl.handle.net/1854/LU-6976872 000614628004029 10 p. 2015 2015 2015 No license (in copyright) published https://biblio.ugent.be/publication/6976872/file/6976874 application/pdf restricted ug 6976872 2015-11-06T17:45:08Z 2026-03-31T13:26:29Z P1 VABB-5 journalArticle Article A1 Iline Steyaert aut author ug_UGent Gertjan Vancoillie aut author ug_UGent Richard Hoogenboom aut author ug_WE07 0000-0001-7398-2058 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng 'Smart' materials can be defined as materials that respond to a certain stimulus with a change in their properties. A specific class herein is halochromic textiles, i.e. fibrous materials that change color with pH. Such halochromic textiles play an important role in the continuous monitoring and visual reporting of the pH with applications in various fields, such as wound treatment and protective clothing. pH-sensitive nanofibrous nonwovens have high sensitivity and a fast response time, and are mostly fabricated by introducing a pH-responsive dye via dye-doping of the feed mixture before fabrication. However, this method suffers from leaching of the dye, which is an undesirable effect that not only reduces the output signal strength but can also be detrimental to the environment by causing, for instance, toxicological responses. In this paper, a new strategy is demonstrated for the reduction of dye leaching in electrospun, nanofibrous materials. Through blend electrospinning of polyamide-6 (PA6) with a dye-functionalized copolymer, large sheets of uniform, halochromic nanofibrous material can be fabricated showing a fast pH-sensitive color change. Polymeric entanglements within the nanofiber are proposed to immobilize the dye-functionalized copolymer in the PA6 matrix, resulting in drastically reduced dye leaching. Such stable nanofibrous, PA6-based, halochromic materials are particularly interesting in the design of new colorimetric sensors applicable in several sectors, including the biomedical field, agriculture, safety and technical textiles. Chemistry OPTICAL SENSORS PH SENSOR NITRAZINE YELLOW CHEMICAL SENSORS VOLATILE ORGANIC-COMPOUNDS AZO-DYES POLYMER FLUORESCENCE DESIGN FIBERS http://hdl.handle.net/1854/LU-5954540 10.1039/c5py00060b 000351720100010 1759-9954 2015 1759-9954 2015 6 14 2685 2694 2015 No license (in copyright) published https://biblio.ugent.be/publication/5954540/file/5954548 application/pdf restricted ug 5954540 2015-05-12T11:45:33Z 2026-03-31T14:18:22Z A1 VABB-1 journalArticle Article A1 Nathalie Luickx aut author ug_UZGent Natasja Van den Vreken aut author ug_GE38 0000-0003-4656-6037 Willem D'Oosterlinck aut author Lien Van der Schueren aut author ug_UGent Heidi Declercq aut author ug_UGent 0000-0002-2849-1345 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Maria Cornelissen aut author ug_UGent Ronald Verbeeck aut author ug_UGent eng Medicine and Health Sciences electrospinning coating poly(epsilon-caprolactone) calcium phosphate nanofibers NANOFIBROUS SCAFFOLDS SURFACE MODIFICATION EXTRACELLULAR-MATRIX POLY(L-LACTIC ACID) BONE REGENERATION TISSUE HYDROXYAPATITE FIBERS MINERALIZATION FABRICATION http://hdl.handle.net/1854/LU-5808679 10.1002/jbm.a.35191 000349101700009 1549-3296 2015 1549-3296 2015 103 2 511 524 2015 No license (in copyright) published https://biblio.ugent.be/publication/5808679/file/5808684 application/pdf restricted ug 5808679 2015-01-16T16:53:38Z 2026-03-31T14:14:33Z A1 VABB-1 journalArticle Article A1 Patrick Vanraes aut author ug_UGent Gert Willems aut author Nele Daels aut author ug_UGent Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Pieter Surmont aut author ug_WE07 Frederic Lynen aut author ug_WE07 0000-0002-4690-7690 Jeroen Vandamme aut author Jim Van Durme aut author Anton Nikiforov aut author ug_TW17 0000-0002-2255-6419 Christophe Leys aut author ug_TW17 0000-0003-1363-0768 eng Earth and Environmental Sciences DIELECTRIC BARRIER DISCHARGE Energy efficiency WASTE-WATER ADVANCED OXIDATION PEROXONE PROCESS DEGRADATION PLASMA PRODUCTS REACTOR H2O2 OZONATION Degradation by-products Peroxone Advanced oxidation processes Wastewater treatment Dielectric barrier discharge http://hdl.handle.net/1854/LU-5966384 10.1016/j.watres.2014.11.009 000353605000029 0043-1354 2015 0043-1354 2015 72 361 371 2015 No license (in copyright) published https://biblio.ugent.be/publication/5966384/file/5966404 application/pdf restricted ug 5966384 2015-05-27T12:47:21Z 2026-03-31T14:18:46Z A1 VABB-1 journalArticle Article A1 Sam van der Heijden aut author ug_UGent Kevin De Bruycker aut author ug_UGent 0000-0002-1438-4872 Robin Simal aut author Filip Du Prez aut author ug_WE07 0000-0001-7727-4155 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng This work focuses on the application of a novel click chemistry approach, based on triazolinediones (TAD), to produce elastomeric membranes by electrospinning. TAD chemistry has been applied as a post-treatment to tune the mechanical properties of fibrous membranes consisting of styrene-butadiene-styrene (SBS) triblock copolymers. In addition, an eco-friendly SBS electrospinning solution was developed by electrospinning the SBS fibers from a butyl acetate solution to which LiBr and a bifunctional TAD molecule were added to increase the conductivity and the amount of polymer entanglements, respectively. Straightforward postmodification of these fibers was achieved by submerging the SBS membranes in a TAD-acetone solution. The use of, respectively, phenyl TAD or bifunctional TAD allowed for the introduction of phenyl groups as well as chemical cross-links and thus to tune the mechanical properties of the fibers, resulting in an elongation at break between 90 and 700% and a modulus from 100 to over 120 MPa. Chemistry UV-IRRADIATION POLYBUTADIENE ENE REACTION BLOCK-COPOLYMERS DIENE POLYMERS TRIBLOCK COPOLYMERS CHEMICAL-REACTIONS POLYMER NANOFIBERS COMPOSITES SCAFFOLDS http://hdl.handle.net/1854/LU-6999403 10.1021/acs.macromol.5b01569 000361935600013 0024-9297 2015 0024-9297 2015 48 18 6474 6481 2015 No license (in copyright) published https://biblio.ugent.be/publication/6999403/file/6999414 application/pdf restricted https://biblio.ugent.be/publication/6999403/file/6999415 application/pdf private ug 6999403 2015-12-02T10:42:53Z 2026-03-31T14:23:42Z A1 VABB-1 journalArticle Article A1 Nele Daels aut author ug_UGent Marija Radoicic aut author Maja Radetic aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 eng Electrospinning Microfiltration Nanofibres Photodegradation TiO2 nanoparticles PHOTOCATALYTIC DEGRADATION TITANIUM-DIOXIDE STAPHYLOCOCCUS-AUREUS METHYLENE-BLUE WASTE-WATER IN-VITRO PHOTODEGRADATION FILTRATION TURBIDITY COLI http://hdl.handle.net/1854/LU-6928340 10.1016/j.seppur.2015.06.016 000358702700056 1383-5866 2015 1383-5866 2015 149 488 494 2015 No license (in copyright) published https://biblio.ugent.be/publication/6928340/file/6928341 application/pdf restricted ug 6928340 2015-09-11T10:39:38Z 2026-03-31T14:22:55Z A1 VABB-1 conference C3 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 Lutz Walter edt editor ETP CONFERENCE eng Technology and Engineering http://hdl.handle.net/1854/LU-8157397 2015 BRUSSEL EURATEX 2015 1 43 2015 No license (in copyright) published https://biblio.ugent.be/publication/8157397/file/8157411 application/pdf ug 8157397 2016-11-17T11:14:32Z 2026-03-31T14:28:08Z C3 journalArticle Article A1 Özgür Ceylan aut author ug_UGent Florence Goubet aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng The moisture sorption behavior of white and naturally colored cotton fibers is studied by dynamic vapor sorption. Dark brown and brown fibers show a higher sorption capacity compared to beige and white fibers. The differences in sorption capacity are found to be related to the maturity and crystallinity index of the fibers. All fibers exhibited sorption hysteresis to varying degrees throughout the full relative humidity range. The variations in hysteresis behavior are mainly attributed to the differences in crystallinity index of the fibers. In addition the monolayer and polylayer moisture content is analyzed using the Hailwood Horrobin model. Monolayer sorption is most closely related to the crystallinity index and, to a lower extent, maturity of the fibers. For beige and white fibers monolayer sorption remains almost constant, whereas for darker fibers it shows a substantial increase with increasing color difference. In contrast, polylayer sorption shows a general increasing trend over the whole studied color spectrum. Also a noticeable relationship was found between the total hysteresis and the monolayer sorption. Yet such relation was less evident for polylayer sorption. This study contributes to the better understanding of the dynamic moisture sorption behavior of white and naturally colored cotton fibers. This improved understanding is important for optimal application of naturally colored cotton fibers in novel materials. Technology and Engineering NATURALLY COLORED COTTON WATER-VAPOR SORPTION ADSORPTION-ISOTHERMS ORGANIC-MATTER CELLULOSE MATURITY KINETICS MODEL WOOD HYSTERESIS Moisture sorption Naturally colored cotton Dynamic vapor sorption Hailwood and Horrobin model http://hdl.handle.net/1854/LU-4420867 10.1007/s10570-014-0206-6 000336322800008 0969-0239 2014 0969-0239 2014 21 3 1149 1161 2014 No license (in copyright) published https://biblio.ugent.be/publication/4420867/file/4420907 application/pdf restricted http://www.researchgate.net/publication/260478924_Dynamic_moisture_sorption_behavior_of_cotton_fibers_with_natural_brown_pigments ug 4420867 2014-06-17T14:48:52Z 2026-03-31T13:22:16Z A1 VABB-1 conference C3 Iline Steyaert aut author ug_UGent Guy Van Assche aut author Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 BPG Annual Meeting 2014 eng Technology and Engineering http://hdl.handle.net/1854/LU-5643926 2014 Gent, Belgium Belgian Polymer Group 2014 130 130 2014 No license (in copyright) published https://biblio.ugent.be/publication/5643926/file/5643936 application/pdf restricted ug 5643926 2014-07-08T15:35:27Z 2026-03-31T14:10:05Z C3 journalArticle A4 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Sam van der Heijden aut author ug_UGent dut Technology and Engineering http://hdl.handle.net/1854/LU-5718747 0040-5280 2014 0040-5280 2014 3 44 44 2014 No license (in copyright) published https://biblio.ugent.be/publication/5718747/file/5718750 application/pdf restricted ug 5718747 2014-10-07T14:45:47Z 2026-03-31T14:11:49Z A4 VABB-1 conference C3 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 3rd International Conference on Electrospinning eng Technology and Engineering http://hdl.handle.net/1854/LU-5808152 abstract ICE-041-2014 2014 San Francisco, USA The American Ceramic Society 2014 27 27 2014 No license (in copyright) published https://biblio.ugent.be/publication/5808152/file/5808644 application/pdf restricted ug 5808152 2015-01-16T11:13:30Z 2026-03-31T14:14:31Z C3 conference C3 Iline Steyaert aut author ug_UGent G Van Assche aut author H Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 3rd International Conference on Electrospinning eng This study describes the importance of heating rate when analysing nanofibres using differential scanning calorimetry and illustrates some pitfalls related to the use of conventional rates (-20 K min-1). The melting behaviour of several polyamide (PA) types was researched using a fast-scanning calorimeter (RHC, T A Instruments) capable of controlled heating rates above 1000 K min-1. Past heating suppresses kinetic processes such as cold crystallization, crystal reorganization and crystalline perfectioning, which can be necessary for a correct-analysis of crystal structures, especially in oriented polymorphous structures such as PA nanofibres. For PA69, for instance, analysis at higher rates reveals that nanofibres have a much more stable crystal structure than bulk material (only 15% of low-melting phase vs. 71 % in bulk). This difference cannot be seen at 20 K min-1 since this crystal phase recrystallizes during heating, indicating the importance of a higher rate. However, high heating rates may result in thermal lag and a reduced resolution. Our results indicate that this effect becomes significant for all samples at rates above 500 K min-1 due to the high porosity of nanofibrous sample (-90%) and thus low thermal conductivity. Finding the golden mean between suppression of kinetic processes and limitation of thermal lag is key and a comparison of the melting behaviour at high and low scan rates is recommended. Technology and Engineering http://hdl.handle.net/1854/LU-5808130 2014 San Francisco, USA The American Ceramic Society 2014 26 26 2014 No license (in copyright) published https://biblio.ugent.be/publication/5808130/file/5808149 application/pdf restricted ug 5808130 2015-01-16T11:00:51Z 2026-03-31T14:14:31Z C3 journalArticle Article A1 Emanuela Guido aut author Claudio Colleoni aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Maria Rosaria Plutino aut author Giuseppe Rosace aut author eng Technology and Engineering Coating Hybrid organic-inorganic materials Sol-gel Epoxy-ring opening DIRECT DYES Wearable sensor METHYL RED SYSTEMS COTTON NMR FT IR kinetics NITRAZINE YELLOW WEARABLE SENSORS SOL-GEL PROCESS ORGANIC-INORGANIC MATERIALS WASH FASTNESS http://hdl.handle.net/1854/LU-5808655 10.1016/j.snb.2014.06.126 000341455400029 0925-4005 2014 0925-4005 2014 203 213 222 2014 No license (in copyright) published https://biblio.ugent.be/publication/5808655/file/5808663 application/pdf restricted ug 5808655 2015-01-16T16:44:17Z 2026-03-31T14:14:33Z A1 VABB-1 journalArticle Article A1 Sam van der Heijden aut author ug_UGent Lode Daelemans aut author ug_TW11 0000-0001-6214-3785 Bert De Schoenmaker aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Hubert Rahier aut author Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering FRACTURE-TOUGHNESS NANOTUBE-POLYMER COMPOSITES MATRIX RESIN MECHANICAL-PROPERTIES DELAMINATION MORPHOLOGY INTERLAYER STRENGTH MODE Nano composites Resin transfer moulding (RTM) Delamination Fracture toughness http://hdl.handle.net/1854/LU-5808688 10.1016/j.compscitech.2014.09.005 000344422000010 0266-3538 2014 0266-3538 2014 104 66 73 2014 No license (in copyright) published https://biblio.ugent.be/publication/5808688/file/5808697 application/pdf restricted https://biblio.ugent.be/publication/5808688/file/5808702 application/pdf ug 5808688 2015-01-16T17:05:04Z 2026-03-31T14:14:33Z A1 VABB-1 journalArticle Article A1 Nele Daels aut author ug_UGent Marija Radoicic aut author Maja Radetic aut author Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Earth and Environmental Sciences Microfiltration Nanofibres Electrospinning Photodegradation TiO2 nanoparticles PHOTOCATALYTIC DEGRADATION METHYLENE-BLUE AZO DYES WATER NANOCOMPOSITES FILTRATION ANATASE SIZE http://hdl.handle.net/1854/LU-5659166 10.1016/j.seppur.2014.06.040 000341552900034 1383-5866 2014 1383-5866 2014 133 282 290 2014 No license (in copyright) published https://biblio.ugent.be/publication/5659166/file/5661272 application/pdf restricted ug 5659166 2014-07-16T14:36:22Z 2026-03-31T14:10:21Z A1 VABB-1 conference C3 Patrick Vanraes aut author ug_UGent G Willems aut author Anton Nikiforov aut author ug_TW17 0000-0002-2255-6419 Nele Daels aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Pieter Surmont aut author ug_WE07 Frederic Lynen aut author ug_WE07 0000-0002-4690-7690 Christophe Leys aut author ug_TW17 0000-0003-1363-0768 XXII Europhysics Conference on Atomic and Molecular Physics of Ionized Gases (scampig - XXII) eng Technology and Engineering http://hdl.handle.net/1854/LU-5660842 291477186X 2014 291477186X 2014 344 345 2014 No license (in copyright) published https://biblio.ugent.be/publication/5660842/file/5660843 application/pdf ug 5660842 2014-07-21T21:55:26Z 2026-03-31T14:10:23Z C3 journalArticle Article A1 Sam van der Heijden aut author ug_UGent Bert De Schoenmaker aut author ug_UGent Hubert Rahier aut author Guy Van Assche aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering MODULATED-TEMPERATURE DSC MECHANICAL-PROPERTIES DIFFERENTIAL SCANNING CALORIMETRY FRACTURE-TOUGHNESS THERMAL-PROPERTIES CARBON NANOTUBES CURE KINETICS COMPOSITE INTERPHASE SYSTEMS Nano-structures Cure behaviour Thermal analysis http://hdl.handle.net/1854/LU-5966330 10.1016/j.polymertesting.2014.08.019 000345541800033 0142-9418 2014 0142-9418 2014 40 265 272 2014 No license (in copyright) published https://biblio.ugent.be/publication/5966330/file/5966343 application/pdf restricted ug 5966330 2015-05-27T12:36:55Z 2026-03-31T14:18:46Z A1 VABB-1 journalArticle Article A1 Thierry De Meyer aut author ug_UGent Karen Hemelsoet aut author ug_TW08 0000-0002-6537-9731 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Sulfonphthaleine dyes are an important class of pH indicators, finding applications in novel (textile) sensors. In this paper, we present a combined experimental and theoretical study to elucidate the halochromic behaviour of a large set of sulfonphthaleine compounds. Starting from an experimental analysis consisting of UV-Vis spectroscopy, the pH region and the absorption wavelengths related to the colour shift are obtained and pK(a) values are derived. The effect of the substituents on the pH region can be traced back to their electron donating/withdrawing properties. Time-Dependent Density Functional Theory (TD-DFT) is able to adequately produce the trend in experimental wavelengths. Proton affinities are used to assess the effect of substituents on the pH region. The combination of theory and experiment is able to give a better understanding of the pH sensitivity; the methodology in this work will be useful in future dye design and is applicable to other dye classes as well. (C) 2013 Elsevier Ltd. All rights reserved. Chemistry GLASSY-CARBON ELECTRODE GENERALIZED-GRADIENT-APPROXIMATION DENSITY-FUNCTIONAL THEORY CONTINUUM SOLVATION METHODS EXCITED-STATE PROPERTIES AB-INITIO CALCULATIONS COMPLETE BASIS-SET TD-DFT AZO DYES THYMOL BLUE Sulfonphthaleine dyes Halochromism TD-DFT UV-Vis spectroscopy Substituent effects pK(a) http://hdl.handle.net/1854/LU-4353650 10.1016/j.dyepig.2013.10.048 000331483800031 0143-7208 2014 0143-7208 ELSEVIER SCI LTD 2014 102 241 250 2014 No license (in copyright) published https://biblio.ugent.be/publication/4353650/file/4353710 application/pdf https://biblio.ugent.be/publication/4353650/file/4353665 application/pdf restricted ug 4353650 2014-04-04T15:24:12Z 2026-03-31T13:59:19Z A1 VABB-1 conference C3 Iline Steyaert aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Electrospinning for High Performance Sensing (EHPS - 2014) eng Technology and Engineering http://hdl.handle.net/1854/LU-4421457 9788862240123 2014 9788862240123 Monterotondo, Rome, Italy CNR-IIA 2014 25 26 2014 No license (in copyright) published https://biblio.ugent.be/publication/4421457/file/4421486 application/pdf restricted ug 4421457 2014-06-17T16:08:14Z 2026-03-31T14:07:41Z C3 journalArticle Article A1 Annelies Goethals aut author ug_UGent Tawanda Mugadza aut author Yasin Arslanoglu aut author Ruphino Zugle aut author Edith Antunes aut author Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Tebello Nyokong aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering SCAFFOLDS FILTRATION BACTERIA SINGLET OXYGEN ELECTROSPUN CHITOSAN PHOTOSENSITIZERS functionalization of polymers photochemistry separation techniques PHOTODYNAMIC THERAPY METAL-PHTHALOCYANINES TITANIUM-DIOXIDE electrospinning http://hdl.handle.net/1854/LU-4407542 10.1002/app.40486 000334600500050 0021-8995 40486 7 p. 2014 0021-8995 2014 131 13 2014 No license (in copyright) published https://biblio.ugent.be/publication/4407542/file/4407559 application/pdf ug 4407542 2014-06-04T16:06:25Z 2026-03-31T14:06:18Z A1 VABB-1 journalArticle Article A1 Andy Van Yperen-De Deyne aut author ug_UGent Thierry De Meyer aut author ug_UGent Ewald Pauwels aut author ug_CA60 0000-0001-9699-4094 An Ghysels aut author ug_TW06 0000-0003-0015-2605 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Michel Waroquier aut author ug_WE05 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Karen Hemelsoet aut author ug_TW08 0000-0002-6537-9731 eng Physics and Astronomy MAGNETIC-PROPERTIES AB-INITIO CALCULATIONS DENSITY-FUNCTIONAL THEORY SIMULATIONS SPECTRA MONTE-CARLO FRANCK-CONDON HERZBERG-TELLER RESONANCE RAMAN AQUEOUS-SOLUTION http://hdl.handle.net/1854/LU-4396662 10.1063/1.4869937 000334577300006 0021-9606 134105 14 p. 2014 0021-9606 2014 140 13 2014 No license (in copyright) published https://biblio.ugent.be/publication/4396662/file/4396984 application/pdf restricted ug 4396662 2014-05-23T10:04:12Z 2026-03-31T14:55:37Z A1 VABB-1 conference C1 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Lien Van der Schueren aut author ug_UGent Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Chokri Cherif edt editor 13th Autex World Textile Conference eng Silica nanofibres have promising characteristics for multiple applications, such as composites, filtration, catalysis, etc. Electrospinning of silica nanofibres through the sol-gel process has been carried out, but the parameters influencing the electrospinning stability have not been studied in detail. However, this knowledge is necessary for upscaling the process. In this study, the optimum viscosity to electrospin in a stable manner is determined and the preparation procedure to obtain this viscosity is evaluated. A narrow viscosity region in which electrospinning is stable could be determined, moreover this region corresponded with nanofibres having the smallest mean diameter. Uniform nanofibres could be obtained with freshly prepared sols and diluted sols, however electrospinning of the fresh sols was more stable. These results demonstrate the feasibility of upscaling the electrospinning of silica nanofibres, since they are electrospinnable in a stable, reproducible manner. Technology and Engineering electrospinning silica sol-gel tetraethyl orthosilicate http://hdl.handle.net/1854/LU-3228837 9783867803434 2013 9783867803434 Dresden, Germany Autex 2013 1 4 2013 No license (in copyright) published https://biblio.ugent.be/publication/3228837/file/3228841 application/pdf restricted ug 3228837 2013-05-29T14:21:43Z 2026-03-31T13:05:31Z C1 VABB-5 conference C1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Iline Steyaert aut author ug_UGent Lien Van der Schueren aut author ug_UGent XXIII International IFATCC Congress eng Technology and Engineering http://hdl.handle.net/1854/LU-3230371 9789639970335 2013 9789639970335 Budapest, Hungary IFATCC 2013 1 6 2013 No license (in copyright) published https://biblio.ugent.be/publication/3230371/file/3230372 application/pdf restricted ug 3230371 2013-05-30T17:09:21Z 2026-03-31T13:05:34Z C1 VABB-5 journalArticle A4 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 dut Technology and Engineering http://hdl.handle.net/1854/LU-3184424 0040-5280 2013 0040-5280 2013 1 maart 34 34 2013 No license (in copyright) published https://biblio.ugent.be/publication/3184424/file/3184436 application/pdf restricted ug 3184424 2013-04-05T12:51:04Z 2026-03-31T13:04:02Z A4 VABB-1 conference C3 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Sam van der Heijden aut author ug_UGent Bert De Schoenmaker aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Hubert Rahier aut author International Istanbul Textile Congress 2013 Innovative and Functional Textiles eng Technology and Engineering Nanofibres fibre-reinforced composites mechanical properties. http://hdl.handle.net/1854/LU-4083751 2013 Istanbul, Turkey Istanbul Technical University 2013 68 68 2013 No license (in copyright) published https://biblio.ugent.be/publication/4083751/file/4083764 application/pdf restricted ug 4083751 2013-06-24T13:50:33Z 2026-03-31T13:25:30Z C3 journalArticle Article A1 Bert De Schoenmaker aut author ug_UGent Sam van der Heijden aut author ug_UGent Sofie Moorkens aut author ug_TW11 0009-0004-0857-0881 Hubert Rahier aut author Guy Van Assche aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering THERMOSETTING SYSTEMS RESIN CURE KINETICS MULTIWALLED CARBON NANOTUBES ELECTROSPUN COMPOSITES GLASS-TRANSITION TEMPERATURE DIFFERENTIAL SCANNING CALORIMETRY NANOCOMPOSITES MORPHOLOGY Nano composites Textile composites Curing Differential scanning calorimetry (DSC) Electro-spinning http://hdl.handle.net/1854/LU-4087797 10.1016/j.compscitech.2013.02.009 000318377900006 0266-3538 2013 0266-3538 2013 79 35 41 2013 No license (in copyright) published https://biblio.ugent.be/publication/4087797/file/4087810 application/pdf restricted ug 4087797 2013-06-27T12:39:44Z 2026-03-31T13:25:52Z A1 VABB-1 conference C1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Sam van der Heijden aut author ug_UGent Bert De Schoenmaker aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Hubert Rahier aut author Fatma Kalaoglu edt editor International Istanbul Textile Congress 2013 Innovative and Functional Textiles eng Technology and Engineering fibre-reinforced composites Nanofibres mechanical properties http://hdl.handle.net/1854/LU-3237366 2013 Istanbul, Turkey ITU / ITKIB-ITA 2013 1 5 2013 No license (in copyright) published https://biblio.ugent.be/publication/3237366/file/3237367 application/pdf restricted http://www.istanbultextilecongress.com/sayfalar/INTRODUCTION.html ug 3237366 2013-06-06T17:28:41Z 2026-03-31T13:20:52Z C1 VABB-5 conference C1 Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Bert De Schoenmaker aut author ug_UGent Sam van der Heijden aut author ug_UGent Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Larissa Gorbatikh edt editor CompositesWeek@Leuven eng Recently, several types of nanoparticles are frequently incorporated in reinforced epoxy resin composites. Since it is difficult to obtain a homogeneous dispersion of these nanoparticles, the mechanical improvement of the composites is very moderate. Thermoplastic nanofibrous structures can overcome this issue. Therefore, this paper investigated the effect of electrospun polyamide 6 nanofibrous structures on the mechanical properties of a glass fiber/epoxy composite. The nanofibers are incorporated in the glass fiber/epoxy composite as stand-alone interlayered structures and directly spun on the glass fiber reinforcement. Both incorporation procedures have no negative effect on the impregnation of the epoxy. Incorporation of nanofibers increases the stress at failure in the 0°-direction, the best results are obtained when the nanofibers are directly electrospun on the glass fibers. Optical microscopic images also demonstrate that nanofibers prevent delamination when a 90° crack reaches a neighbourly 0° ply. When the composites are loaded under 45°, it is proven that for an identical stress, the glass fiber composite with deposited nanofibers has less cracks than when interlayered nanofibrous structures are incorporated. Technology and Engineering http://hdl.handle.net/1854/LU-4142174 8 p. 2013 Leuven, Belgium 2013 2013 No license (in copyright) published https://biblio.ugent.be/publication/4142174/file/4142175 application/pdf ug 4142174 2013-09-23T09:33:30Z 2026-03-31T13:31:38Z C1 VABB-5 conference C3 Iline Steyaert aut author ug_UGent Lien Van der Schueren aut author ug_UGent Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Third International Symposium: Frontiers in Polymer Science eng Technology and Engineering http://hdl.handle.net/1854/LU-4126330 2013 Sitges, Spain 2013 1 1 2013 No license (in copyright) published https://biblio.ugent.be/publication/4126330/file/4126348 application/pdf restricted https://biblio.ugent.be/publication/4126330/file/4126349 application/pdf restricted ug 4126330 2013-09-04T09:18:23Z 2026-03-31T13:30:11Z C3 conference C3 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 17th International Sol-Gel Conference (Sol-Gel 2013) eng Chemistry http://hdl.handle.net/1854/LU-4190710 2013 2013 2013 No license (in copyright) published https://biblio.ugent.be/publication/4190710/file/5755614 application/pdf ug 4190710 2013-11-27T12:13:08Z 2026-03-31T13:38:03Z C3 journalArticle Article A1 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng The decomposition behavior of cotton fibers is examined using thermogravimetric analysis. The effect of the test parameters on the thermal degradation of raw cotton fibers is determined. Focus is given to the influence of water immersion on the thermal behavior of cotton fibers. For less mature fibers a clear difference is noted between the degradation profiles of the water-immersed and untreated samples. On the contrary, only a small change is noted on the degradation profile for more mature fibers after water immersion. The maturity and variations in water-soluble content of the fiber are found to be important factors influencing the thermal behavior of raw cotton fibers. Inductively coupled plasma atomic emission spectrometry (ICP-AES) is used to underpin the effect of water immersion on cotton fibers. This improved understanding for the role of maturity and water soluble constituents in thermal degradation of cotton fibers may lead to develop routes that improve thermal stability and smoldering characteristics of cotton fibers as relevant for future applications. Technology and Engineering Thermal degradation PYROLYSIS Thermogravimetric analysis AIR Water immersion Cotton FABRICS DECOMPOSITION CELLULOSE THERMOGRAVIMETRIC ANALYSIS FINE-STRUCTURE http://hdl.handle.net/1854/LU-4185120 10.1007/s10570-013-9936-0 000322673000006 0969-0239 2013 0969-0239 2013 20 4 1603 1612 2013 No license (in copyright) published https://biblio.ugent.be/publication/4185120/file/4185126 application/pdf restricted ug 4185120 2013-11-14T20:42:20Z 2026-03-31T10:26:51Z A1 VABB-1 conference C3 Nele Daels aut author ug_UGent Annelies Goethals aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 3rd IWA BeNeLux Regional Young Water Professionals Conference eng Technology and Engineering http://hdl.handle.net/1854/LU-4164918 2013 International Water Association (IWA) 2013 2013 No license (in copyright) published https://biblio.ugent.be/publication/4164918/file/5755533 application/pdf restricted https://biblio.ugent.be/publication/4164918/file/5755534 application/pdf https://biblio.ugent.be/publication/4164918/file/5755532 application/pdf ug 4164918 2013-10-16T19:14:30Z 2026-03-31T13:34:20Z C3 conference C3 Nele Daels aut author ug_UGent Annelies Goethals aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 10th IWA Leading edge conference on Water and Waste Water Technologies eng Technology and Engineering http://hdl.handle.net/1854/LU-4164919 2013 International Water Association (IWA) 2013 2013 No license (in copyright) published https://biblio.ugent.be/publication/4164919/file/5755529 application/pdf https://biblio.ugent.be/publication/4164919/file/5755531 application/pdf restricted https://biblio.ugent.be/publication/4164919/file/5755530 application/pdf https://biblio.ugent.be/publication/4164919/file/5755519 application/pdf ug 4164919 2013-10-16T19:20:50Z 2026-03-31T13:34:20Z C3 journalArticle Article A1 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Florence Goubet aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Previous research reported on a screening method to assess the functionalisation of bioengineered cotton fibres through the absorption of CI Acid Orange 7. The aim of the present paper is to extend this study to different dye classes. Thus the dye absorption of bioengineered cotton fibres containing oligochitin is studied for a series of dye classes. Statistically significant differences were found between cotton lines designed to produce oligochitin in the fibre and their respective controls for all tested dyes, confirming previous results with CI Acid Orange 7. Further, although variations in micronaire influenced dye absorption, it was confirmed for all dyes tested as well as for CI Acid Orange 7 that the oligochitin production had a larger impact on the exhaustion values than the differences in micronaire. The method described in this paper can be applied as a screening tool to meet the challenge of working with small quantities of fibrous materials. Moreover it shows the potential that the incorporated oligochitin has for increasing dyeability with a wide range of dyes and creating fibres with more versatile reactivity. Technology and Engineering CHITOSAN FABRICS MATURITY http://hdl.handle.net/1854/LU-4208761 10.1111/cote.12043 000321757100001 1472-3581 2013 1472-3581 2013 129 4 239 245 2013 No license (in copyright) published https://biblio.ugent.be/publication/4208761/file/4208824 application/pdf restricted ug 4208761 2013-12-13T11:11:14Z 2026-03-31T10:27:28Z A1 VABB-1 conference C3 Iline Steyaert aut author ug_UGent Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 13th Biennial Bayreuth Polymer Symposium eng Technology and Engineering http://hdl.handle.net/1854/LU-4208935 2013 Universität Bayreuth 2013 1 1 2013 No license (in copyright) published https://biblio.ugent.be/publication/4208935/file/4208937 application/pdf restricted ug 4208935 2013-12-13T11:51:10Z 2026-03-31T13:40:11Z C3 conference C3 H Karakas aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 A Sezai Saraç aut author F Kalaoglu aut author H Baskan aut author International R&D Brokerage Event of 'Innovative and Functional Textile Products' eng In this study, three important subjects, electrospinning of nanofibrous materials suited for biomedical, antibacterial, nanocomposite and electromagnetic shielding applications are mentioned. Electrospinning of any biodegradable and biocompatible polymer is possible by adjusting electrospinning process parameters such as voltage, polymer viscosity, polymer conductivity, polymer flow rate, etc. In this project, it is aimed to make reproducible production of electrospun nanofibrous membranes with using polymers as poly (e-caprolactone) (pcl), polyglycolyde (pga), poly (lactic-colycolic aid) (plga), polylactide (pla) etc. for antibacterial, biomedical, nanocomposite and electromagnetic shielding applications. Technology and Engineering functional textile applications Nanofibres antibacterial electromagnetic shielding electrospinning biomedical nanocomposites http://hdl.handle.net/1854/LU-3237648 2013 Istanbul, Turkey ITKIB-ITA 2013 166 168 2013 No license (in copyright) published https://biblio.ugent.be/publication/3237648/file/3237838 application/pdf restricted ug 3237648 2013-06-07T11:07:10Z 2026-03-31T13:05:55Z C3 conference C3 Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Bert De Schoenmaker aut author ug_UGent Sam van der Heijden aut author ug_UGent Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 OT Thomsen edt editor Bent F Sørensen edt editor Christian Berggreen edt editor 6th International Conference on Composites Testing and Model Identification (comptest 2013) eng Technology and Engineering http://hdl.handle.net/1854/LU-3203938 8791464498 2013 8791464498 2013 173 174 2013 No license (in copyright) published https://biblio.ugent.be/publication/3203938/file/3203950 application/pdf ug 3203938 2013-04-29T14:08:13Z 2026-03-31T13:04:37Z C3 journalArticle Article A1 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Lien Van der Schueren aut author ug_UGent Frederik Goethals aut author ug_UGent Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Silica nanofibres have, due to their excellent properties, promising characteristics for multiple applications such as filtration, composites, catalysis, etc. Silica nanofibres can be obtained by combining electrospinning and the sol–gel process. To produce silica nanofibres most of the time organic solutions are applied containing a carrying polymer, which is afterwards removed by a thermal treatment to form pure ceramic nanofibres. Although electrospinning of the pure silica precursors without carrying polymer is preferred, the parameters influencing the stability of the electrospinning process are however largely unknown. In addition, this knowledge is essential for potential upscaling of the process. In this study, the optimum viscosity to electrospin in a stable manner is determined and the way to obtain this viscosity is evaluated. Sols with a viscosity between 120 and 200 mPa.s could be electrospun in a stable way, resulting in uniform and beadless nanofibres. Furthermore, this viscosity region corresponded with nanofibres having the lowest mean nanofibre diameters. Electrospinning with diluted sols was possible as well, but electrospinning of the fresh sols was more stable. These results illustrate the importance of the viscosity and degree of crosslinking of the sol for the stable electrospinning of silica nanofibres and demonstrate that upscaling of the electrospinning process of silica nanofibres is feasible Technology and Engineering FIBERS COMPOSITE GEL PROCESS GLASS NANOFIBERS Tetraethyl orthosilicate Silica Stability Electrospinning Sol-gel MORPHOLOGY DIAMETER RESINS http://hdl.handle.net/1854/LU-3223956 10.1007/s10971-013-3066-x 000322137600023 0928-0707 2013 0928-0707 2013 67 1 188 195 2013 No license (in copyright) published https://biblio.ugent.be/publication/3223956/file/3223970 application/pdf private https://biblio.ugent.be/publication/3223956/file/4087911 application/pdf restricted https://biblio.ugent.be/publication/3223956/file/8561080 application/pdf ug 3223956 2013-05-24T13:50:29Z 2026-03-31T13:05:22Z A1 VABB-1 conference Proceedings Paper P1 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 P Vincenzini edt editor C Carfagna edt editor 4th International conference on SMART Materials, Structures and Systems (CIMTEC 2012) ; Symposium D on Smart and Interactive Textiles of CIMTEC eng Recently, an increasing interest in pH-sensitive textiles is recognized. These chromic textiles can be used as flexible sensors for various applications. The aim of the current research is to develop textile pH-sensors through the application of pH-sensitive dyes on various textile materials using different techniques. The results of our study show that halochromic dyes can be incorporated into conventional textiles by a conventional dyeing technique. Also coating the fabrics with a sol-gel layer layer containing the halochromic dye proved to be successful. The majority of these developed materials showed a clearly visible color change with a pH-variation. The response of the sensors was dependent on the density of the fabric but was generally relatively fast, especially for the sol-gel treated fabrics. The halochromic coloration of nanofibres was realized by directly adding the dyes during the fiber formation, which was shown to be highly effective. Again, a clear halochromic shift was observed. The response of these sensors was fast thanks to the high porosity of nanofibrous non-wovens. Yet, it should be kept in mind that the halochromic behavior of the dyes in the textile matrix altered compared to their behavior in solution which is most likely attributed to dye-fiber interactions. Generally we can conclude that various coloration techniques showed to be effective for the development of innovative textile pH-sensors. Technology and Engineering dyeing chromism sol-gel electrospinning pH sensor http://hdl.handle.net/1854/LU-3118695 10.4028/www.scientific.net/AST.80.47 000317791300007 1662-0356 9783908158660 2013 1662-0356 9783908158660 Stafa-Zürich, Switzerland Trans Tech Publications 2013 80 47 52 2013 No license (in copyright) published https://biblio.ugent.be/publication/3118695/file/3118697 application/pdf restricted ug 3118695 2013-02-01T17:00:33Z 2026-03-31T13:12:37Z P1 VABB-5 journalArticle Article A1 Iline Steyaert aut author ug_UGent Marie-Paule Delplancke aut author Guy Van Assche aut author Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering STATE FIBER MORPHOLOGY NYLON-6 NANOFIBERS MOLECULAR-ORIENTATION DSC NANOCOMPOSITES CRYSTALLIZATION TEMPERATURE PERFORMANCE Fast-scanning calorimetry Crystal structure Polyamide nanofibre http://hdl.handle.net/1854/LU-4243517 10.1016/j.polymer.2013.10.032 000327418600018 0032-3861 2013 0032-3861 2013 54 25 6809 6817 2013 No license (in copyright) published https://biblio.ugent.be/publication/4243517/file/4243576 application/pdf restricted ug 4243517 2014-01-22T12:01:21Z 2026-03-31T13:45:06Z A1 VABB-1 journalArticle Article A1 Bert De Schoenmaker aut author ug_UGent Sam van der Heijden aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering Polyamide 6 nanofibres Stress-strain curves Structural composites Optical microscopy FRACTURE-TOUGHNESS MATS CARBON/EPOXY COMPOSITES Matrix cracking http://hdl.handle.net/1854/LU-4438997 10.1016/j.polymertesting.2013.09.015 000329143700028 0142-9418 2013 0142-9418 2013 32 8 1495 1501 2013 No license (in copyright) published https://biblio.ugent.be/publication/4438997/file/5673890 application/pdf ug 4438997 2014-06-30T12:04:06Z 2026-03-31T14:08:03Z A1 VABB-1 journalArticle Article A1 Lien Van der Schueren aut author ug_UGent Thierry De Meyer aut author ug_UGent Iline Steyaert aut author ug_UGent Özgür Ceylan aut author ug_UGent Karen Hemelsoet aut author ug_TW08 0000-0002-6537-9731 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Chemistry BEHAVIOR MATRIX INDICATOR CHITOSAN FABRICATION Chitosan Polycaprolactone Nanofiber Hydrophilicity PH-sensitive Sensor http://hdl.handle.net/1854/LU-3062995 10.1016/j.carbpol.2012.08.003 000310253800037 0144-8617 2013 0144-8617 2013 91 1 284 293 2013 No license (in copyright) published https://biblio.ugent.be/publication/3062995/file/3063021 application/pdf restricted https://biblio.ugent.be/publication/3062995/file/3063800 application/pdf ug 3062995 2012-11-29T16:08:53Z 2026-03-31T14:33:43Z A1 VABB-1 journalArticle Article A1 Bert De Schoenmaker aut author ug_UGent Lien Van der Schueren aut author ug_UGent Ruphino Zugle aut author Annelies Goethals aut author ug_UGent Philippe Westbroek aut author ug_TW11 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 Tebello Nyokong aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng To obtain uniform and reproducible nanofibres, it is important to understand the effect of the different electrospinning parameters on the nanofibre morphology. Even though a lot of literature is available on the electrospinning of nanofibres, only minor research has been performed on the effect of the relative humidity (RH). This paper investigates the influence of this parameter on the electrospinning process and fibre morphology of the hydrophilic polyamide 4.6 and the less hydrophilic polyamide 6.9. First, the electrospinning process and deposition area of the nanofibres is examined at 10, 50 and 70 % RH. Subsequently, the effect of the polyamide concentration and solvent ratio on the fibre morphology is investigated using scanning electron microscopy and differential scanning calorimetry. It was found that the nanofibre diameter decreased with increasing RH. This resulted in less stable crystals for polyamide 4.6 while electrospinning of polyamide 6.9 at higher RH led to slightly more stable crystals. In conclusion, the water affinity of a polymer is an important factor in predicting the nanofibre morphology at different humidities. Technology and Engineering ELECTROSPINNING PROCESS NANOCOMPOSITES http://hdl.handle.net/1854/LU-3118590 10.1007/s10853-012-6934-9 000312906000038 0022-2461 2013 0022-2461 2013 48 4 1746 1754 2013 No license (in copyright) published https://biblio.ugent.be/publication/3118590/file/3118613 application/pdf restricted https://biblio.ugent.be/publication/3118590/file/3118605 application/pdf restricted ug 3118590 2013-02-01T15:26:35Z 2026-03-31T14:36:05Z A1 VABB-1 journalArticle Article A1 Özgür Ceylan aut author ug_UGent Jenny Alongi aut author Lieve Van Landuyt aut author ug_TW11 Alberto Frache aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering cone calorimeter combustion heat release cellulosic fibres CONE CALORIMETER HEAT RELEASE OXYGEN-CONSUMPTION PERFORMANCE COTTON APPARATUS FABRICS cotton http://hdl.handle.net/1854/LU-3118617 10.1002/fam.2147 000324329200005 0308-0501 2013 0308-0501 2013 37 6 482 490 2013 No license (in copyright) published https://biblio.ugent.be/publication/3118617/file/3118618 application/pdf https://biblio.ugent.be/publication/3118617/file/4316342 application/pdf private ug 3118617 2013-02-01T15:33:28Z 2026-03-31T14:36:05Z A1 VABB-1 conference C3 Jozefien Geltmeyer aut author 0000-0002-1281-2968 Lien Van der Schueren aut author ug_UGent Klaartje De Buysser aut author ug_WE06 0000-0001-7462-2484 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 José M Lagarón edt editor Luis Cabedo edt editor Amparo López edt editor María J Fabra edt editor POLYMAR 2013 eng Technology and Engineering http://hdl.handle.net/1854/LU-4183625 9788480219426 2013 9788480219426 Castelló de la Plana, Spain Universitat Jaume. Servei de Communicació i Publicacions 2013 17 172 173 2013 No license (in copyright) published https://biblio.ugent.be/publication/4183625/file/4183632 application/pdf restricted http://dx.doi.org/10.6035/e-TIiT.2013.17 ug 4183625 2013-11-13T13:05:54Z 2026-03-31T15:28:18Z C3 conference C3 Nele Daels aut author ug_UGent Annelies Goethals aut author ug_UGent Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 José M Lagarón edt editor Luis Cabedo edt editor Amparo López edt editor María J Fabra edt editor POLYMAR 2013 eng Technology and Engineering http://hdl.handle.net/1854/LU-4183649 9788480219426 2013 9788480219426 Castelló de la Plana, Spain Universitat Jaume. Servei de Communicació i Publicacions 2013 17 180 181 2013 No license (in copyright) published https://biblio.ugent.be/publication/4183649/file/4183654 application/pdf restricted http://dx.doi.org/10.6035/e-TIiT.2013.17 ug 4183649 2013-11-13T13:20:08Z 2026-03-31T15:28:19Z C3 conference C3 Bert De Schoenmaker aut author ug_UGent Sam van der Heijden aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 José M Lagarón edt editor Luis Cabedo edt editor Amparo López edt editor María J Fabra edt editor POLYMAR 2013 eng Technology and Engineering http://hdl.handle.net/1854/LU-4183655 9788480219426 2013 9788480219426 Castelló de la Plana, Spain Universitat Jaume. Servei de Communicació i Publicacions 2013 17 194 195 2013 No license (in copyright) published https://biblio.ugent.be/publication/4183655/file/4183656 application/pdf restricted http://dx.doi.org/10.6035/e-TIiT.2013.17 ug 4183655 2013-11-13T13:27:24Z 2026-03-31T15:28:19Z C3 conference C3 Iline Steyaert aut author ug_UGent Guy Van Assche aut author Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 José M Lagarón edt editor Luis Cabedo edt editor Amparo López edt editor María J Fabra edt editor POLYMAR 2013 eng Technology and Engineering http://hdl.handle.net/1854/LU-4183657 9788480219426 2013 9788480219426 Castelló de la Plana, Spain Universitat Jaume. Servei de Communicació i Publicacions 2013 17 211 212 2013 No license (in copyright) published https://biblio.ugent.be/publication/4183657/file/4183664 application/pdf restricted http://dx.doi.org/10.6035/e-TIiT.2013.17 ug 4183657 2013-11-13T13:33:07Z 2026-03-31T15:28:19Z C3 conference C3 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 4th international conference 'SMART materials, structures and systems' (CIMTEC - 2012) eng Technology and Engineering http://hdl.handle.net/1854/LU-2983892 2012 Montecatini Terme, Italy CIMTEC 2012 90 90 2012 No license (in copyright) published https://biblio.ugent.be/publication/2983892/file/2983941 application/pdf restricted http://www.cimtec-congress.org/2012 ug 2983892 2012-09-10T10:22:21Z 2026-03-31T13:21:55Z C3 journalArticle Article A1 Sander De Vrieze aut author ug_TW11 Nele Daels aut author ug_UGent Karel Lambert aut author ug_TW03 Bjorge Decostere aut author ug_UGent Zeger Hens aut author ug_WE06 0000-0002-7041-3375 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Electrospinning is a process to generate nanofibrous nonwovens. With these nonwovens, many applications can be targeted, such as water filtration. In this paper, polyamide nanofibrous membranes are evaluated for their pore size, a key parameter in water filtration, and for their removal of microorganisms. To increase the removal efficiency to values exceeding the state of the art, innovative functionalization of the nanofibres is studied. The nanofibrous membranes are functionalized using a one step method. Different functionalization chemicals are investigated which are Ag nanoparticles and bactericides. Ag functionalized nanofibres are used as a reference medium to compare with a novel bactericide based functionalization system. It is seen that nanofibrous membranes functionalized with the bactericides exceed the normal removal efficiencies obtained by microfiltration membranes. Furthermore, knowledge is built up on how these bactericides are inserted in the nanofibres themselves. Technology and Engineering microorganisms Electrospinning water filtration WATER MEMBRANES FABRICATION SOLVENT http://hdl.handle.net/1854/LU-1917707 10.1177/0040517511416273 000298184800005 0040-5175 2012 0040-5175 2012 82 1 37 44 2012 No license (in copyright) published https://biblio.ugent.be/publication/1917707/file/4397968 application/pdf private https://biblio.ugent.be/publication/1917707/file/4397969 application/pdf restricted ug 1917707 2011-09-29T13:51:53Z 2026-03-31T07:39:29Z A1 VABB-1 journalArticle Article A1 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Giovanna Brancatelli aut author Giuseppe Rosace aut author Els Van Damme aut author ug_LA25 ug_LA51 ug_LA55 ug_LA59 ug_LA62 ug_LA63 0000-0001-9848-766X Winnok De Vos aut author ug_UGent eng Technology and Engineering Methyl Red pH-sensor Sol–gel Wide area textile sensor FLUORESCENT PH INDICATOR SPECTRAL PROPERTIES DYES PERFORMANCE HUMIDITY COATINGS FILMS http://hdl.handle.net/1854/LU-2022378 10.1016/j.snb.2011.11.077 000301214700005 0925-4005 2012 0925-4005 2012 162 1 27 34 2012 No license (in copyright) published https://biblio.ugent.be/publication/2022378/file/2022424 application/pdf restricted https://biblio.ugent.be/publication/2022378/file/2022425 application/pdf private ug 2022378 2012-02-07T14:00:21Z 2026-03-31T09:10:57Z A1 VABB-1 journalArticle Article A1 Bert De Schoenmaker aut author ug_UGent Annelies Goethals aut author ug_UGent Lien Van der Schueren aut author ug_UGent Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Nanofibres can be processed into several high-end applications due to their unique characteristics, especially when based on a diversity of polymers with specific properties. This, however, requires that the nanofibrous structures are produced in a highly reproducible way. The article gives focus to polyamide (PA) 6.9, a less exploited PA though with interesting properties such as a very low moisture absorption. To trace and understand the dominant parameters that allow for the aimed reproducible characteristics, the influence of the solution parameters on the steady state behaviour during electrospinning as well as the resultant fibre morphology is followed by scanning electron microscopy and differential scanning calorimetry. Results show a significant effect of the amount of non-solvent acetic acid, added to the solvent formic acid, on the steady state behaviour and the fibre morphology. The non-solvent acetic acid broadens the steady state window by making the electrospin solutions more suitable to obtain uniform and reproducible nanofibrous structures with a narrow nanofibre diameter distribution. The mixture of the solvent formic acid and the non-solvent acetic acid strongly contributes to the future potentials of PA 6.9 nanofibres, with its leading to a smaller fibre distribution and moreover highly reproducible in time. Technology and Engineering NANOCOMPOSITES FIBERS PARAMETER STABILITY JETS http://hdl.handle.net/1854/LU-2034716 10.1007/s10853-012-6266-9 000302241900021 0022-2461 2012 0022-2461 2012 47 9 4118 4126 2012 No license (in copyright) published https://biblio.ugent.be/publication/2034716/file/2034778 application/pdf restricted ug 2034716 2012-02-16T10:23:12Z 2026-03-31T09:11:49Z A1 VABB-1 journalArticle Article A1 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Lien Van der Schueren aut author ug_UGent M Hauben aut author M De Block aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng The aim of this paper is to establish a test method for the screening of bioengineered cotton fibers with an improved reactivity through the incorporation of positively charged nitrogen moieties. For this purpose a spectrophotometric method based on the absorption of a negatively charged dye (Acid Orange 7) is extensively studied. The processing parameters have been optimized for analyzing small amounts of fibers and the feasibility of the method is examined by using two other well established techniques for nitrogen analysis. Good correlations were obtained between the different methods, however, the reproducibility of the Acid Orange 7 was superior to the other two methods. Moreover, statistically significant differences were found between fibers from cotton lines designed to produce oligochitin and control fibers without oligochitin. This shows that the proposed method is capable of accurately detecting increased nitrogen levels in bioengineered cotton fibers. Technology and Engineering bioengineered cotton screening reactivity Acid Orange 7 http://hdl.handle.net/1854/LU-2034810 10.1177/0040517511404595 000301191300006 0040-5175 2012 0040-5175 2012 82 8 801 809 2012 No license (in copyright) published https://biblio.ugent.be/publication/2034810/file/2078092 application/pdf restricted https://biblio.ugent.be/publication/2034810/file/2034853 application/pdf private https://biblio.ugent.be/publication/2034810/file/2034857 application/pdf private ug 2034810 2012-02-16T10:52:55Z 2026-03-31T09:11:50Z A1 VABB-1 journalArticle Article A1 Lien Van der Schueren aut author ug_UGent Iline Steyaert aut author ug_UGent Bert De Schoenmaker aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering DIAMETER FIBERS MORPHOLOGY FABRICATION CHITOSAN Chitosan Polycaprolactone Nanofibre Blend Fibre morphology http://hdl.handle.net/1854/LU-2077968 10.1016/j.carbpol.2012.01.085 000302979700014 0144-8617 2012 0144-8617 2012 88 4 1221 1226 2012 No license (in copyright) published https://biblio.ugent.be/publication/2077968/file/2077983 application/pdf restricted ug 2077968 2012-03-30T12:35:29Z 2026-03-31T09:15:08Z A1 VABB-1 journalArticle Article A1 Bert De Schoenmaker aut author ug_UGent Lien Van der Schueren aut author ug_UGent Özgür Ceylan aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng The aliphatic polyamide 4.6 (PA 4.6) has unique properties compared to the commonly used polyamides 6 (PA 6) and 6.6 (PA 6.6). The purpose of this paper is to produce uniform and reproducible nanofibrous PA 4.6 structures. Therefore, a mixture of the solvent formic acid and the nonsolvent acetic acid is used to dissolve and electrospin the PA 4.6. First the steady-state behaviour of the process and the boundary limits of the solution parameters needed for steady-state electrospinning are investigated. Subsequently, the effect of several solution and process parameters on the fibre morphology is examined, using microscopic techniques and thermal analysis. The polyamide concentration is found to be the dominant parameter affecting the fibre diameter and morphology. Furthermore, tensile tests are performed on upscaled nanofibrous structures and electrospun under optimised steady-state conditions. It is shown that the PA 4.6 nanofibrous structures, compared to nanofibrous nonwovens of PA 6 and PA 6.6, have a higher stress and strain at break. Technology and Engineering NANOCOMPOSITES FIBERS FABRICATION WATER http://hdl.handle.net/1854/LU-2153977 10.1155/2012/860654 000305027800001 1687-4110 860654 2012 1687-4110 2012 2012 1 9 2012 No license (in copyright) published https://biblio.ugent.be/publication/2153977/file/2154029 application/pdf restricted ug 2153977 2012-06-14T15:54:52Z 2026-03-31T09:20:33Z A1 VABB-1 conference C3 Iline Steyaert aut author ug_UGent Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 The Fiber Society Spring 2012 Conference : Fiber Research for Tomorrow's Applications eng Technology and Engineering http://hdl.handle.net/1854/LU-2154231 2012 St. Gallen, Switzerland EMPA 2012 55 56 2012 No license (in copyright) published https://biblio.ugent.be/publication/2154231/file/2154238 application/pdf restricted ug 2154231 2012-06-14T16:58:25Z 2026-03-31T09:20:35Z C3 conference C3 Thierry De Meyer aut author ug_UGent Lien Van der Schueren aut author ug_UGent Karen Hemelsoet aut author ug_TW08 0000-0002-6537-9731 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 The Fiber Society Spring 2012 Conference : Fiber Research for Tomorrow's Applications eng Technology and Engineering http://hdl.handle.net/1854/LU-2154239 2012 St. Gallen, Switzerland EMPA 2012 103 104 2012 No license (in copyright) published https://biblio.ugent.be/publication/2154239/file/2154241 application/pdf restricted ug 2154239 2012-06-14T17:04:47Z 2026-03-31T09:20:35Z C3 conference C3 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 The Fiber Society Spring 2012 Conference : Fiber Research for Tomorrow's Applications eng Technology and Engineering http://hdl.handle.net/1854/LU-2154242 2012 St. Gallen, Switzerland EMPA 2012 293 294 2012 No license (in copyright) published https://biblio.ugent.be/publication/2154242/file/2154243 application/pdf restricted ug 2154242 2012-06-14T17:11:32Z 2026-03-31T09:20:35Z C3 conference C3 Bert De Schoenmaker aut author ug_UGent Ives De Baere aut author ug_TW11 0000-0002-6846-0981 Wim Van Paepegem aut author ug_TW11 0000-0003-0672-3675 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 2th International Conference on Electrospinning (ELECTROSPIN 2012) eng Many literature is available on the use ofnanofibres for tissue engineering, (bio)mcdicaJ applications, filtration and others, Their possibilities for composites have however much less been exploited. Owing to the high specific surface and low fibre diameter of nanofibres, they are very promising as secondary reinforcement for composites. Therefore, this research focuses on the mechanical properties of an epoxy resin with unidirectional glass fibres as primary reinforcement and polyamide 6 nanofibres as secondary reinforcement. Glass fibre composite plates are compared with composite plates with free interlayered nanofibrous nonwovens and with nanofibres directly electrospun on the unidirectional glass fibre mats. These interlayer nanofibrous structures, approximately 35 )!m thick, were obtained by solvent nozzle electrospinning and had an average fibre diameter of 136 ± 18 nm. The [OO,900h composite plates were produced through the resin transfer moulding process and mechanically characterized by tensile tests. The knee point of the composite plates significantly increased when nanofibres were added between the glass fibre layers, which imply that the matrix was strongly strengthened by the incorporated nanofibres. Also the shear modulus and strength under 45° increased with free interlayered nanofibres. When the nanofibres were directly electrospun on the glass fibres, the strength was even higher. Furthermore, the ratio of Poisson was considerably better when secondary nanofibres were added, especially when they were directly electrospun on the glass fibres. In conclusion, the nanofibrous nonwovens improve the mechanical properties of the glass fibre/epoxy composite plates, especially when loaded under 45°. This research highlights the advantages of adding nanofibres to glass fibre composites, and thus creating an innovative application area for nanofibres. Technology and Engineering http://hdl.handle.net/1854/LU-2154244 2012 Jeju, Korea Korea Advanced Institute of Science and Technology, Korea 2012 6 6 2012 No license (in copyright) published https://biblio.ugent.be/publication/2154244/file/2154245 application/pdf restricted ug 2154244 2012-06-14T17:16:11Z 2026-03-31T09:20:36Z C3 conference C3 Nele Daels aut author ug_UGent Annelies Goethals aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 2th International Conference on Electrospinning (ELECTROSPIN 2012) eng Perfonnance Assessment of Functionalized Electrospun Nanofibres for Removal of PathogensKeywords: functionalised nanofibre, pathogen removal, membrane filtration. The c1ectrospinning technique is a process for making continuous nanofibrcs in a nonwoven fonn. This process spins fibres ranging from 80 om diameter to several hundred nanometers. The non-woven structure is produced by app lying a high voltage to the anode, submerged in a spinn ing solution. This produces a charged jet of fluid when the electrical force is highcr than the surface tension of the solution and the fibres are collected on a grounded aluminum plate. Nanofibres have a small pore size and a large surface area to volume ratio compared to nonwovens (this ratio for a nanofibre can be as large as 1000 times of that of a microfibre). This, together with their low density and interconnected open pore structure. make the nanofibre nonwoven appropriate for a wide variety of filtration applications (Huang et al.. 2003). Due to the large effective surface areas. nanofibres can carry functional agents with different properties. such as biocidcs. With microfiltration membranes it is possible to retain suspended solids and micro-organisms. The added value of the tested nanofibre microfiltration membranes functionalized with silver nanoparticles (nAg) or other biocides to pathogen removal was studied. The biocides used in this study are commercially available. WSCP for example. is used as a cooling tower biocide and is applied directly into the water. Silver nanoparticles are nowadays implemented in a wide variety of consumer products for antimicrobial controL The aim of the study is to examine the effectiveness of different biocides and the possibility to electrospin them in a steady state nanofibre membrane. The results show that due to the silver nanoparticles and the funct ionalisation with biocides in the functionalized membrane a higher efficiency (3.9 10giO - 5,5 10glO) could be achieved. Further, the removal of pathogens is a factor 100 (2 10g10) higher with a WSCP (5%) than conventional microfihration. Functionalisation with Ag nanoparticles gave a 4 10gi0 removal. It is generally known that these particles only have effect on gram negative bacteria such as E. coli. WSCP and bronopol are bactericides that can be applicd on c1ectrospun nanofibres and it has also effect on gram positive bacteria (Chen et aI., 2008). The removal with a non-functionalised membrane is not as good as other micro-filtration studies. With other commercial membranes a 2 log I 0 - 4 logl 0 removal is possible (Zodrow et al.. 2009). Technology and Engineering http://hdl.handle.net/1854/LU-2154246 2012 Jeju, Korea Korea Advanced Institute of Science and Technology 2012 38 38 2012 No license (in copyright) published https://biblio.ugent.be/publication/2154246/file/2154304 application/pdf restricted ug 2154246 2012-06-14T17:24:12Z 2026-03-31T07:48:35Z C3 conference C3 Iline Steyaert aut author ug_UGent Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Hubert Rahier aut author 2th International Conference on Electrospinning (ELECTROSPIN 2012) eng Most of the effort in electrospinning has been spent on the spinning of various single polymer·solvcnt systems. However, the high demand for materials with specific properties indicates the need to eiectrospin polymer blends. Electrospinning of blends containing a synthetic and a natural polymer enables us to combine the favourable characteristics of both (e.g. biocompatibility and sufficient mechanical strength) into one material, which is often necessary in for example medical applications. A morphological characterization of these blend nanofibres is however crucial because there is a broader range of polymer properties influencing the resulting nanofibres. In this work, chitosanlpolycaprolactone (CS/PCL) solutions were electrospun using an acetic acid/fonnie acid solvent system to create antibacterial biodegradable blend nanofibres. The fibres were characterized and the parameters influencing the stability of the production process were analysed. The fibre characterisation includes techniques such as SEM, thennal analysis (using differential scanning calorimetry and dynamic mechanical analysis) and vibrational spectroscopy (infrared spectroscopy). It was found that by adding CS to a PCL electrospinning solution, the fibre diametcrs and deviat ions can be lowered because of two possible causes. The first is the presence of more charges due to the polycationic nature, possibly reducing thc diameter by more extensive jet splaying. The second effect of CS is a significant increase in viscosity, enabling the production of electrospinnable solutions with a lower total polymer concentration. Also other specific blend fibre properties, identified by a variation of techniques, can be linked to the CS addition. Their analysis illustrates the influence of polymer blends on {he electrospinning process and the nanofibre morphology. Technology and Engineering http://hdl.handle.net/1854/LU-2154306 2012 Jeju, Korea Korea Advanced Institute of Science and Technology, Korea 2012 44 44 2012 No license (in copyright) published https://biblio.ugent.be/publication/2154306/file/2154314 application/pdf restricted ug 2154306 2012-06-14T17:30:36Z 2026-03-31T09:20:36Z C3 journalArticle Article A1 Lien Van der Schueren aut author ug_UGent Karen Hemelsoet aut author ug_TW08 0000-0002-6537-9731 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering SPECTRA Halochromism Azo dye Tautomerism INDICATOR SPECTROSCOPY COLOR RAMAN pH-sensor TEXTILE MATERIALS VIBRATIONAL FREQUENCIES HYDRAZONE TAUTOMERISM TD-DFT Polyamide Fiber QUINOXALINE http://hdl.handle.net/1854/LU-2068375 10.1016/j.dyepig.2012.02.013 000304688900011 0143-7208 2012 0143-7208 2012 94 3 443 451 2012 No license (in copyright) published https://biblio.ugent.be/publication/2068375/file/2068396 application/pdf restricted ug 2068375 2012-03-19T10:02:57Z 2026-03-31T09:14:28Z A1 VABB-1 conference C3 Thierry De Meyer aut author ug_UGent Karen Hemelsoet aut author ug_TW08 0000-0002-6537-9731 Lien Van der Schueren aut author ug_UGent Ewald Pauwels aut author ug_CA60 0000-0001-9699-4094 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X Challenges in Density Matrix and Density Functional Theory (DFTM-2012) eng Technology and Engineering http://hdl.handle.net/1854/LU-2099611 2012 2012 P8 P8 2012 No license (in copyright) published https://biblio.ugent.be/publication/2099611/file/4134116 application/pdf restricted ug 2099611 2012-05-07T11:24:37Z 2026-03-31T09:16:36Z C3 journalArticle Review A1 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng A large number of studies have been devoted to the development of chromic textile materials because of their wide applicability as sensor systems. More recently, pH-sensitive chromic textiles have also been investigated to a considerable extent, as the pH value is an important parameter in various circumstances. This review therefore elaborates on pH-sensitive textile materials. The outcome of this review process demonstrates that halochromic dyes can be successfully incorporated into textile materials, leading to flexible sensors. Various textile materials and different application methods have both been shown to be effective. Yet the textile material in which the pH-sensitive agent is present affects its halochromic behaviour and this factor should thus always be considered. Finally, this review establishes the major potential of pH-sensitive textile materials. Technology and Engineering PHOTOCHROMIC DYES SOL-GEL DISPERSE DYES AZO DYES SPECTRAL PROPERTIES AQUEOUS-SOLUTION OPTICAL SENSOR METHYL RED CONGO RED PART 1 http://hdl.handle.net/1854/LU-2064105 10.1111/j.1478-4408.2011.00361.x 000301049000002 1478-4408 2012 1478-4408 2012 128 2 82 90 2012 No license (in copyright) published https://biblio.ugent.be/publication/2064105/file/2064144 application/pdf restricted ug 2064105 2012-03-12T10:02:04Z 2026-03-31T07:46:05Z A1 VABB-1 conference C3 Thierry De Meyer aut author ug_UGent Karen Hemelsoet aut author ug_TW08 0000-0002-6537-9731 Lien Van der Schueren aut author ug_UGent Ewald Pauwels aut author ug_CA60 0000-0001-9699-4094 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X MolSim 2012 eng Azo dyes consist of a double nitrogen-nitrogen bond connected to two aromatic moieties, creating a large conjugated pi-system. A relatively simple synthesis and large variety of colours have made azo dyes the most abundant class of colourants. The dye studied in this research, ethyl orange (EO), is a prototypical example of a halochromic (pH-sensitive) azo dye. Halochromic dyes have already proven useful for application in textile sensors since the colour change of such sensors is easy to perceive and the advantages of the parent materials (e.g. flexibility) are maintained.[1] The key to further development of smart materials is combining multiple responses that can be separately addressed by different triggers.[2] To achieve this, we need a full knowledge of the colour changing mechanism and the influence of the environment. Herein, both theoretical and experimental methods were used to unravel the halochromic properties of EO.[3] Experimental UV-VIS and Raman spectra point towards a structural change of EO in water between pH 5 and pH 3. This pH-sensitivity is modeled through a series of ab initio computations on the neutral, various singly and doubly protonated structures. Static calculations (with inclusion of implicit solvation) are successful in assigning the most probable protonation site. However, to fully understand the origin of the main absorption peaks, a molecular dynamics simulation study in a water molecular environment is used in combination with Time Dependent-DFT calculations to deduce average UV-VIS spectra which take into account the flexibility of the dye and the explicit interactions with the surrounding water molecules. The proposed methodology allows to achieve a remarkable agreement between the theoretical and experimental UV-VIS spectrum and enables to fully unravel the pH sensitive behaviour of EO in aqueous environment. References: [1] L. Van der Schueren and K. De Clerck, Textile Research Journal 80(7) 590-603 (2010). [2] M. A. C. Stuart et al., Nature Materials, 9(2) 101-113 (2010). [3] T. De Meyer et al., submitted to Chemistry - A European Journal Chemistry http://hdl.handle.net/1854/LU-2974652 1 p. 2012 2012 2012 No license (in copyright) published https://biblio.ugent.be/publication/2974652/file/4134115 application/pdf ug 2974652 2012-08-24T09:43:18Z 2026-03-31T14:30:30Z C3 conference C3 Iline Steyaert aut author ug_UGent Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Hubert Rahier aut author 11th European Symposium on Polymer Blends eng Technology and Engineering http://hdl.handle.net/1854/LU-3099803 9788469527627 2012 9788469527627 San Sebastian, Spain Universidad des Pais Vasco 2012 75 76 2012 No license (in copyright) published https://biblio.ugent.be/publication/3099803/file/3099822 application/pdf restricted ug 3099803 2013-01-18T13:29:38Z 2026-03-31T14:35:05Z C3 journalArticle Article A1 Iline Steyaert aut author ug_UGent Lien Van der Schueren aut author ug_UGent Hubert Rahier aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng PCL/chitosan blend nanofibres could provide an excellent nanostructured material for biomedical use since their beneficial properties are combined into one material. This paper focuses on the solvent use in the production of PCL/chitosan nanofibres by solution electrospinning, since this is a crucial parameter in the electrospinning process. It was established that an acetic acid/formic acid shows great potential for the stable electrospinning of the blend. Additionally, the fibre morphology using this solvent system was analysed. Technology and Engineering blends chitosan polycaprolactone electrospinning http://hdl.handle.net/1854/LU-3118558 10.1002/masy.201251111 000210325000012 1022-1360 2012 1022-1360 2012 321 1 71 75 2012 No license (in copyright) published https://biblio.ugent.be/publication/3118558/file/3118576 application/pdf restricted ug 3118558 2013-02-01T15:12:48Z 2026-03-31T14:36:04Z A1 VABB-1 journalArticle Article A1 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Frank Meulewaeter aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng The moisture sorption behavior of developing cotton fibers is studied by dynamic vapor sorption. Mature fibers show a typical sigmoidal isotherm, IUPAC type II, describing the adsorption on macroporous and non-porous adsorbents with a typical hysteresis. This is different from the type III isotherms exhibited by elongating fibers explained by the weak adsorbate-adsorbent interactions. The maximum sorption capacity clearly decreases throughout the cotton fiber development. This decrease is very rapid during the elongation phase of the fibers, but declines beyond 25 days post anthesis (DPA). This transition corresponds to the time point where the secondary cell wall becomes dominant over the primary cell wall, as confirmed with FT-IR. Also only little moisture hysteresis appeared during the elongation phase whereas from 25 DPA onwards a distinct hysteresis is observed that remains almost constant until maturation of the fiber. The study clearly elucidates the sorption mechanism during the elongation phase of the fiber to be different from the one during the secondary cell wall synthesis. This improved understanding of the cotton sorption behavior is important for optimal application of cotton fiber in novel materials. Technology and Engineering CELL-WALL CELLULOSE ORGANIC-MATTER ADSORPTION-ISOTHERMS WATER-VAPOR SORPTION MODEL WOOD HYSTERESIS DESORPTION KINETICS Moisture sorption Cotton Dynamic vapor sorption Cotton development http://hdl.handle.net/1854/LU-3001177 10.1007/s10570-012-9737-x 000307768100005 0969-0239 2012 0969-0239 2012 19 5 1517 1526 2012 No license (in copyright) published https://biblio.ugent.be/publication/3001177/file/3001199 application/pdf restricted ug 3001177 2012-09-28T15:32:12Z 2026-03-31T14:31:29Z A1 VABB-1 journalArticle Article A1 Thierry De Meyer aut author ug_UGent Karen Hemelsoet aut author ug_TW08 0000-0002-6537-9731 Lien Van der Schueren aut author ug_UGent Ewald Pauwels aut author ug_CA60 0000-0001-9699-4094 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Veronique Van Speybroeck aut author ug_TW17 ug_WE05 0000-0003-2206-178X eng The halochromism in solution of a prototypical example of an azo dye, ethyl orange, was investigated by using a combined theoretical and experimental approach. Experimental UV/Vis and Raman spectroscopy pointed towards a structural change of the azo dye with changing pH value (in the range pH 53). The pH-sensitive behavior was modeled through a series of ab initio computations on the neutral and various singly and doubly protonated structures. For this purpose, contemporary DFT functionals (B3LYP, CAM-B3LYP, and M06) were used in combination with implicit modeling of the water solvent environment. Static calculations were successful in assigning the most-probable protonation site. However, to fully understand the origin of the main absorption peaks, a molecular dynamics simulation study in a water molecular environment was used in combination with time-dependent DFT (TD-DFT) calculations to deduce average UV/Vis spectra that take into account the flexibility of the dye and the explicit interactions with the surrounding water molecules. This procedure allowed us to achieve a remarkable agreement between the theoretical and experimental UV/Vis spectrum and enabled us to fully unravel the pH-sensitive behavior of ethyl orange in aqueous environment. Chemistry density functional calculations pigments azo compounds dyes SOLVATION MODELS ELECTRON-DENSITY BIOMOLECULAR SYSTEMS TD-DFT halochromism UV Vis spectroscopy DENSITY-FUNCTIONAL THEORY SPACE GAUSSIAN PSEUDOPOTENTIALS PH-SENSITIVE FUNCTION MOLECULAR-DYNAMICS EXCITED-STATES TEXTILE MATERIALS http://hdl.handle.net/1854/LU-2963923 10.1002/chem.201103633 000305388300021 0947-6539 2012 0947-6539 2012 18 26 8120 8129 2012 No license (in copyright) published https://biblio.ugent.be/publication/2963923/file/6776416 application/pdf restricted ug 2963923 2012-07-24T09:22:05Z 2026-03-31T14:29:59Z A1 VABB-1 journalArticle A4 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author dut Technology and Engineering http://hdl.handle.net/1854/LU-2987299 2012 2012 3 39 39 2012 No license (in copyright) published https://biblio.ugent.be/publication/2987299/file/2987313 application/pdf restricted ug 2987299 2012-09-14T13:36:51Z 2026-03-31T14:31:01Z A4 VABB-1 conference C1 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 7th Central European Conference on Fibre-Grade Polymers, Chemical Fibres and Special Textiles (CEC - 2012) eng A spectrophotometric method based on the absorption of Acid Orange 7 dye was studied for the detection of differences between fibres from cotton lines designed to produce oligochitin in the fibre and their control lines. The Kjeldahl method is used to validate the proposed method. A few transgenic lines designed to produce oligochitin and their respective controls were screened with the methods to see whether the proposed method is capable of accurately detecting the differences in nitrogen levels. Also a broad range of dyes from different classes are investigated. Their ability to detect differences in reactivity is to be proven using cotton fibres treated with different concentrations of a cationic agent. Four dyes of different classes and structures which show most promising results are proposed to screen dyeability differences between the bioengineered cotton lines. Technology and Engineering reactivity dye absorption bioengineered cotton http://hdl.handle.net/1854/LU-3004663 9789612483562 2012 9789612483562 Portorož, Slovenia University of Maribor 2012 18 22 2012 No license (in copyright) published https://biblio.ugent.be/publication/3004663/file/3004672 application/pdf restricted ug 3004663 2012-10-02T16:09:43Z 2026-03-31T14:31:40Z C1 VABB-5 journalArticle Article A1 Michiel Claessens aut author ug_CA80 ug_LA09 Steven De Meester aut author ug_LA24 0000-0002-5246-3918 Lieve Van Landuyt aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Colin Janssen aut author ug_LA22 0000-0002-7781-6679 eng Earth and Environmental Sciences Belgium Microplastics Marine debris Sediment Time trends FT-IR spectroscopy PLASTIC DEBRIS ORGANIC POLLUTANTS SEA-TURTLES ENVIRONMENT POLLUTION PARTICLES INGESTION SCRUBBERS BEACHES http://hdl.handle.net/1854/LU-3198152 10.1016/j.marpolbul.2011.06.030 000295954100032 0025-326X 2011 0025-326X 2011 62 10 2199 2204 2011 No license (in copyright) published https://biblio.ugent.be/publication/3198152/file/3223459 application/pdf restricted ug 3198152 2013-04-22T11:19:12Z 2026-03-31T13:04:26Z A1 VABB-1 journalArticle Article A1 Lien Van der Schueren aut author ug_UGent Bert De Schoenmaker aut author ug_UGent Özlem İpek Kalaoglu Altan aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering Steady state Polycaprolactone Electrospinning Nanofibres POLYAMIDE-6 FABRICATION FIBERS POLY(EPSILON-CAPROLACTONE) MORPHOLOGY NANOFIBERS NONWOVEN MATS SCAFFOLDS DIAMETER N_N-DIMETHYLFORMAMIDE http://hdl.handle.net/1854/LU-1228806 10.1016/j.eurpolymj.2011.02.025 000291523600005 0014-3057 2011 0014-3057 2011 47 6 1256 1263 2011 No license (in copyright) published https://biblio.ugent.be/publication/1228806/file/1852826 application/pdf restricted https://biblio.ugent.be/publication/1228806/file/1228825 application/pdf ug 1228806 2011-05-20T15:32:45Z 2026-03-31T07:17:24Z A1 VABB-1 conference C3 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Giuliano Freddi edt editor 7th International conference on Polymer and Textile Biotechnology (IPTB 2011) : Gear for the future eng Introduction: Much research has been carried out in the field of chemical modification of cotton to improve dyeing properties [1]. Recent advances in biotechnology, especially in genetic engineering, offer an alternative route to alter reactivity of cotton fibres and thus to reduce the environmental impact and energy consumption of conventional cotton processing. However the success of this breakthrough approach is dependent on the early selection of new fibre types with the best performance. This requires novel tests that use only small amounts of fibre sample due to the very limited availability of bioengineered lines. For this purpose, a semi industrial dyeing method is extensively studied. The method is validated by a well established technique for nitrogen analysis, the Kjehdahl method, using cotton fibres treated with a commercially available cationic agent at various concentrations. Technology and Engineering bioengineering cotton fibres reactivity http://hdl.handle.net/1854/LU-1186180 abstract F.105 1 p. 2011 Milan, Italy Stazione Sperimentale per la Seta 2011 2011 No license (in copyright) published https://biblio.ugent.be/publication/1186180/file/1186190 application/pdf restricted ug 1186180 2011-03-11T10:59:17Z 2026-03-31T07:12:59Z C3 conference C3 Vincent Nierstrasz aut author ug_TW11 Lucy Wanjiru Ciera aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 Giuliano Freddi edt editor 7th International conference on Polymer and Textile Biotechnology (IPTB 2011) : Gear for the future eng Introduction: Protective textiles against insects are an important market, not only for applications in tropical areas where vector borne diseases are a major threat to public health but also in European countries where the presence of mosquitoes can be a nuisance. It is a well known fact that malaria and dengue fever are amongst the most killing diseases in the world: 500 million people a year are infected with malaria and more than a million people die of the disease, i.e. one person every 30 seconds, of which 90% are children, and an estimated 100 million cases of dengue fever and 250000 cases of dengue hemorrhagic fever occur annually. As a result of global warming of the earth, the problem is expanding and is even becoming a threat for Europe. Technology and Engineering textile bio-aggregates malaria mosquito repellent textiles biomimetics protective textile dengue http://hdl.handle.net/1854/LU-1186198 abstract A.111 2011 Milan, Italy Stazione Sperimentale de la Seta 2011 2011 No license (in copyright) published https://biblio.ugent.be/publication/1186198/file/1186221 application/pdf restricted ug 1186198 2011-03-11T11:07:08Z 2026-03-31T07:12:59Z C3 conference C3 Lucy Wanjiru Ciera aut author ug_UGent Vincent Nierstrasz aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 Francesco Branda edt editor Training school 'Synthesis of hybrid organic-inorganic nanoparticles for innovative nanostructural composites' eng This research work is part of the FP7 No-Bug project (Novel release system and biobased utilities for insect repellent textiles). The main interest of the project is personal protective textiles against insects (mosquitoes) for application not only in tropical areas where vector borne diseases are a major threat to the public health but also in European countries where the presence of mosquitoes can be nuisance. Malaria and dengue fever are well known diseases that cause a lot of deaths in the world today. Technology and Engineering http://hdl.handle.net/1854/LU-1196807 2011 2011 2011 No license (in copyright) published https://biblio.ugent.be/publication/1196807/file/1196827 application/pdf ug 1196807 2011-03-25T10:50:23Z 2026-03-31T07:14:08Z C3 journalArticle Article A1 Bert De Schoenmaker aut author ug_UGent Lien Van der Schueren aut author ug_UGent Sander De Vrieze aut author ug_TW11 Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering polyamides wicking behavior nanofiber membranes BIOMEDICAL APPLICATIONS ELECTROSPUN http://hdl.handle.net/1854/LU-1196829 10.1002/app.33117 000287215200035 0021-8995 2011 0021-8995 2011 120 1 305 310 2011 No license (in copyright) published https://biblio.ugent.be/publication/1196829/file/1196852 application/pdf restricted ug 1196829 2011-03-25T11:03:18Z 2026-03-31T07:14:08Z A1 VABB-1 journalArticle Article A1 Sander De Vrieze aut author ug_TW11 Bert De Schoenmaker aut author ug_UGent Özgür Ceylan aut author ug_UGent Jara Depuydt aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Hubert Rahier aut author Guy Van Assche aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Science General ACETIC-ACID SOLVENT MOISTURE PARAMETERS WATER electrospinning polyamide steady state http://hdl.handle.net/1854/LU-1196836 10.1002/app.33036 000285310400059 0021-8995 2011 0021-8995 2011 119 5 2984 2990 2011 No license (in copyright) published https://biblio.ugent.be/publication/1196836/file/1196846 application/pdf restricted ug 1196836 2011-03-25T11:03:18Z 2026-03-31T07:14:08Z A1 VABB-1 conference C1 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 International Conference on Fibrous Products in Medical and Health Care (FiberMed11) eng Halochromic (or pH-sensitive) textile materials can give an indication of the pH of the surrounding environment by a visible colour change and can therefore act as first signal systems. A possible application of this textile pH-sensor can be found in wound dressings. In addition to the use of traditional textile materials such as cotton gauze, nanofibrous nonwovens may provide benefits in medical applications. This paper discusses the development of pH-sensitive cotton fabrics by the combination of standard pH-indicator dyes with standard dyeing processes. Also halochromic polyamide nanofibres were produced by adding the pH-indicator dyes to the polymer solution. Both approaches were found to be promising. After the immobilization of the dye on a textile structure, still a clearly visible colour change was present for most of the dye-textile systems. It should however be noted that the behaviour of the pH-indicator dye was dependent on the medium in which it is incorporated. Technology and Engineering http://hdl.handle.net/1854/LU-1897078 2011 Tampere, Finland Tampere University of Technology 2011 1 5 2011 No license (in copyright) published https://biblio.ugent.be/publication/1897078/file/1897081 application/pdf https://biblio.ugent.be/publication/1897078/file/1897082 application/pdf restricted ug 1897078 2011-09-02T15:11:11Z 2026-03-31T07:38:25Z C1 VABB-5 conference C1 Annelies Goethals aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 N Daels aut author I Scampers aut author Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 International conference on Fibrous Products in Medical and Health Care (FiberMed-11) eng Nowadays, water is often disinfected with biocides which can result in the formation of harmful by-products. Therefore new developments in water treatment are needed. One of such new developments is presented in this study. Nanofiber membranes produced by the electrospinning technique offer great potential in water filtration. Nanofiber structures have a small pore size, a large specific surface area and interconnected open pore structure which makes them appropriate for water filtration. However, the pathogen removal efficiency is not yet satisfactory. To improve this, disinfectants as a functional agent on nanofiber membranes were used in this study. The pathogen removal of the functionalized membranes was evaluated with wastewater from a general hospital with ca. 107 culturable organisms per 100 ml before filtration. Pathogen removal of about 4 to 5,5 log10 is possible with selected biocides. This is higher than a nanofibers membrane without disinfectant, which gives a removal of 2 log10 and commercial membranes with a removal of 3 to 4 log10. In addition to this, the biocides stay immobilized inside the membrane and only a limited fraction (10%) leaches into the water. Technology and Engineering http://hdl.handle.net/1854/LU-1897083 7 p. 2011 Tampere, Finland Tampere University of Technology 2011 2011 No license (in copyright) published https://biblio.ugent.be/publication/1897083/file/1897086 application/pdf restricted https://biblio.ugent.be/publication/1897083/file/1897087 application/pdf restricted ug 1897083 2011-09-02T15:15:48Z 2026-03-31T07:38:25Z C1 VABB-5 journalArticle Article A1 Nele Daels aut author ug_UGent Sander De Vrieze aut author ug_TW11 Imca Sampers aut author ug_LA23 0000-0001-5536-7852 Bjorge Decostere aut author ug_UGent Philippe Westbroek aut author ug_TW11 Ann Dumoulin aut author ug_LA24 Pascal Dejans aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 eng Technology and Engineering BIOMEDICAL APPLICATIONS SILVER NANOPARTICLES BACTERIA Pathogen removal Electrospinning Water filtration WSCP ESCHERICHIA-COLI Nanosilver http://hdl.handle.net/1854/LU-1864130 10.1016/j.desal.2011.03.012 000292584900038 0011-9164 2011 0011-9164 2011 275 1-3 285 290 2011 No license (in copyright) published https://biblio.ugent.be/publication/1864130/file/1864136 application/pdf restricted ug 1864130 2011-08-01T13:21:41Z 2026-03-31T07:37:23Z A1 VABB-1 conference C3 Annelies Goethals aut author ug_UGent Nele Daels aut author ug_UGent Imca Sampers aut author ug_LA23 0000-0001-5536-7852 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 EUROMAT 2011 eng Electrospinning is the most efficient method for the production of nanofibrous structures, which have unique characteristics such as high porosity, high absorption capacity, small pore size and high specific surface area. Thanks to this, they can be used as filtration membranes. Nanofiber membranes have high clean water permeability values, however the pathogen removal efficiency is currently not satisfactory. For this reason, we functionalized the membranes with antibacterial particles, such as silver nanoparticles and commercial biocides, by adding them into the spinning solution. Afterwards, the membranes were characterized to study the effect of the functionalization on the fiber diameter and pathogen removal efficiency. The distribution of the silver nanoparticles was studied with SEM and TEM images. TEM-images showed that the silver nanoparticles are trapped inside the nanofibers. SEM-images confirmed that the average fiber diameter is not affected by the functionalization. To evaluate the removal of pathogens, water samples were taken from waste water from a general hospital (107 – 108 colony forming units per 100 ml) and were filtered with different membranes. A non functionalized nanofiber membrane could not achieve the same reduction in culturable organisms as commercial membranes (2 log10 – 4 log10 removal). Higher reduction was reached when silver nanoparticles were added to the membrane. A 3 log10 – 4 log10 removal was reached by adding silver nanoparticles to the spinning solution. Nanofiber membranes with biocides as functionalization agents achieved even a much higher reduction, up to 5,5 log10, which is competitive with commercial membranes currently on the market. In conclusion, the electrospinning process allows the functionalization of nanofiber membranes with antibacterial particles. This highly improves the pathogen removal efficiency of the membranes. Technology and Engineering http://hdl.handle.net/1854/LU-1903380 abstract A42-O-5-4 2011 Société Française de Métallurgie et de Matériaux ; Associazione Italiana di Metallurgia 2011 2011 No license (in copyright) published https://biblio.ugent.be/publication/1903380/file/1903388 application/pdf restricted ug 1903380 2011-09-19T11:18:50Z 2026-03-31T07:37:58Z C3 conference C3 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 EUROMAT 2011 eng Colour changing textiles have recently gained much interest in literature. These chameleon textiles can be seen as the artificial equivalent of the colour changing species found in nature. A colour change of a textile material may provide information concerning the surrounding medium and a chameleon textile has thus possible uses as warning sensor. Within the group of colour changing textiles, halochromic textiles, which vary in colour depending on the pH, offer major potentials since a whole range of processes in nature are affected by this parameter. For example, during the healing process of a wound, the pH-value of the skin varies. The progress of the healing process could thus be indicated by a pH-sensitive wound dressing which may avoid unnecessary removal of the dressing. The aim of the current research is to develop pH-sensitive textile sensors through the application of pH-sensitive dyes on various textile materials. pH-indicators, normally used to indicate the pH of aqueous solutions, will be used as pH-sensitive dyes since they are easy available and possibly show high affinity for textiles as their molecular structures are similar to the one of standard dyes. Conventional textile fabrics such as cotton and polyamide will be investigated as substrate material for the pH-indicator dyes. Besides these traditional textile materials, also nanofibrous nonwovens will be incorporated with the dyes as the typical characteristics of nanofibres (such as high surface area, small pore size) may provide benefits in various medical applications. The results of our study showed that conventional textile materials can be dyed with pH-indicator dyes using standard dyeing processes. Nanofibrous nonwovens could, as expected, not be dyed with these standard processes but can be coloured by a direct incorporation of the dyes in the polymer solution before the electrospinning process. The halochromic study after the application of the dyes showed that a clearly visible colour change with pH was still present on the textile materials for most of the dye-textile systems. With this it should be noted that the halochromic behaviour of the dyes on the different textile materials was dependent on the surrounding medium due to the different dye-fibre interactions. Technology and Engineering http://hdl.handle.net/1854/LU-1903396 abstract F12-O-2-6 2011 Société Française de Métallurgie et de Matériaux ; Associazione Italiana di Metallurgia 2011 2011 No license (in copyright) published https://biblio.ugent.be/publication/1903396/file/1903431 application/pdf restricted ug 1903396 2011-09-19T11:25:35Z 2026-03-31T07:38:00Z C3 bookChapter B2 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering http://hdl.handle.net/1854/LU-1937478 9781845696917 2011 V Bartels edt editor 9781845696917 Oxford, UK Woodhead 2011 547 566 2011 100 No license (in copyright) published https://biblio.ugent.be/publication/1937478/file/1937479 application/pdf restricted ug 1937478 2011-10-27T16:33:02Z 2026-03-31T07:40:55Z B2 VABB-4 conference C3 Bert De Schoenmaker aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 EUROMAT 2011 eng Nanofibres have by definition a diameter less than 500 nm, which is several times smaller than the conventional fibres. Because of their very small fibre diameter these fibrous materials have specific and unique characteristics such as a high surface-to-volume ratio and high porosity. Thanks to this these nanofibres can be used in a broad spectrum of applications such as liquid and air filtration, wound bandages and composites. Although the literature on nanofibre composites is restricted, nanofibres can have advantages for advanced composites. Composites reinforced with conventional glass or carbon fibres may have very high tensile strengths, but the impact resistance is sometimes limited. A second problem of these actual composites is the delamination of the several textile layers. Both problems can be reduced by using nanofibrous webs between the glass or carbon layers. In our research large polyamide nanofibrous structures (PA 6, PA6.6, PA 4.6 and PA 6.9) were produced on a multi-nozzle setup. Starting from these structures the effect of the nanofibres on the curing of a epoxy matrix was investigated by thermo analytical measurements using a differential scanning calorimeter. Changing the nanofibres characteristics, especially the polyamide type and fibre diameter, will affect the curing behaviour of the resin. Furthermore the influence of the amount of water absorbed through the nanofibrous webs is inquired, by making identical composite samples at different relative humidity’s. In the second part of the research glass fibre/polyamide nanofibre composites were produced on large scale by infusion. The polyamide nanofibres were brought into the composites as stand-alone structures as well as coatings on the glass fabrics. The tenacity of these composites is compared to glass fibre composites without nanofibres. This research gives a good overview of the curing behaviour of the resin affected by the nanofibrous webs on the one side and the advantages of nanofibres for high performance composites on the other side. Technology and Engineering http://hdl.handle.net/1854/LU-1903434 abstract B31-P-1-44 2011 Société Française de Métallurgie et de Matériaux ; Associazione Italiana di Metallurgia 2011 2011 No license (in copyright) published https://biblio.ugent.be/publication/1903434/file/1903453 application/pdf restricted ug 1903434 2011-09-19T11:34:20Z 2026-03-31T07:38:53Z C3 conference C3 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 2nd International symposium on Frontiers in Polymer Science eng Polycaprolactone (PCL) is a biocompatible aliphatic polyester with many possible applications in the medical field. PCL nanofibres, produced by electrospinning, could provide new characteristics that are of interest for these applications. Nanofibrous structures indeed show unique properties such as higher specific surface area, higher porosity and smaller pore size compared to microfibres. At present the most commonly used solvent for electrospinning PCL is chloroform, but this only leads to fibres in the microscale range. A key issue in electrospinning PCL is thus the ability to obtain bead-free fibres with diameters in the nanoscale range. To obtain these small diameter nanofibres of PCL various solvent systems were examined. The innovative solvent mixture formic acid/acetic acid was found to allow for nanofibres with a diameter ten times smaller than the one obtained by chloroform. Steady state conditions could be obtained which thus allow electrospinning in a stable and reproducible way. Moreover, GPC measurements on the PCL pellet and the produced nanofibrous structures showed that there was no degradation of PCL during the electrospinning process from the acid solution. Further it was noticed that the average fibre diameter decreased with decreasing polymer concentration. The solvent ratio was found to have a minor influence on the fibre diameter but showed a significant effect on the fibre diameter distribution with a decreasing standard deviation with increasing amount of formic acid. Also the humidity, an often overlooked yet important parameter, was noted to affect both diameter characteristics. Generally it can be concluded that the solvent system formic acid/acetic acid could fill the gap in electrospinning PCL since it is readily able to produce uniform fibres in the nanoscale range. Technology and Engineering polycaprolactone electrospinning steady state nanofibres http://hdl.handle.net/1854/LU-1903484 abstract P.3.161 2011 2011 2011 No license (in copyright) published https://biblio.ugent.be/publication/1903484/file/1903493 application/pdf restricted ug 1903484 2011-09-19T11:49:48Z 2026-03-31T07:38:54Z C3 conference C3 Bert De Schoenmaker aut author ug_UGent Annelies Goethals aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 2nd International symposium on Frontiers in Polymer Science eng This research investigates the electrospinning prerequisites for polyamide 6.9 and the influence of different electrospin parameters on the fibre morphology. Polyamide 6.9 is a seldom used polyamide though with specific properties such as the lowest water absorption of all polyamides. This can, for example, be advantageous for nanofibres in composite applications. Acetic acid/formic acid solvent mixtures prove to be very suitable for the steady state electrospinning of PA 6.9, with the formic acid serving the solubility of the PA 6.9 and the acetic acid serving the appropriate solution characteristics for obtaining steady state. Steady state behaviour means no irregularities in the nanofibrous structures and a high reproducibility A limited range of polymer concentrations, solvent ratios and process parameters results in steady state electrospinning. The combination of those parameters is determined by the viscosity, surface tension and electric properties of the electrospinning solutions. Different steady state tables showing the limits within a varying polymer concentration and solvent ratio that allow for the production of nanofibres are composed. Sequentially the influence of the main solution and process parameters on the fibre diameter (using SEM) and thermal behaviour (using DSC and XRD) is investigated. The polymer concentration has a significant effect on the morphology of the nanofibres: the average PA 6.9 diameter and the fraction less stable crystal phase increase with increasing polymer concentration. The effect of the solvent ratio is less obvious. The process parameters only have a minor effect on the nanofibres. The applied voltage and TCD show no influence on the nanofibre morphology. The flow rate has a small influence on the fibres, but the difference in diameters is small compared to the differences found with varying polymer concentration. It can be concluded that the polymer concentration is the key parameter to alter the fibre morphology of PA 6.9 nanofibres. Technology and Engineering Nanofibres Electrospinning Polyamide 6.9 http://hdl.handle.net/1854/LU-1903494 abstract P.3.162 2011 2011 2011 No license (in copyright) published https://biblio.ugent.be/publication/1903494/file/1903505 application/pdf restricted ug 1903494 2011-09-19T11:55:02Z 2026-03-31T07:38:54Z C3 conference C3 Annelies Goethals aut author ug_UGent Nele Daels aut author ug_UGent Imca Sampers aut author ug_LA23 0000-0001-5536-7852 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 6th IWA Specialist conference on Membrane Technology for Water and Wastewater Treatment eng Technology and Engineering http://hdl.handle.net/1854/LU-1937489 2011 International Water Association (IWA) 2011 173 174 2011 No license (in copyright) published https://biblio.ugent.be/publication/1937489/file/1937494 application/pdf restricted ug 1937489 2011-10-27T16:54:38Z 2026-03-31T07:40:56Z C3 journalArticle Article; Proceedings Paper A1 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Purpose - The purpose of this paper is to develop textile materials with a pH-sensitive function. Design/methodology/approach - As a start point, the feasibility of incorporating pH-indicators in conventional textiles using standard dyeing processes was investigated. Next, a pH-indicator was incorporated into a nylon nanofibrous structure by adding the dye to the polymer solution before the start of the electro-spinning process. Findings - The authors' results proved that it is possible to develop a pH-sensor using conventional textiles dyed by a standard dyeing process. Also, the incorporation of a pH-indicator dye into a nanofibrous structure was possible. Moreover, reproducible samples could be obtained. Furthermore, the majority of the obtained textile structures showed a clear colour change with a change in acidity. This halochromic behaviour was, however, different from the behaviour of the dyes in solution due to dye-fibre interactions. Originality/value - The knowledge obtained in this study can lead to the development of a textile pH-sensor. This sensor can be used in a broad field of applications since a colour change is a non-disturbing but clear signal which can perform a first warning function. Technology and Engineering Textiles DYES Acidity Colours technology Alkalinity http://hdl.handle.net/1854/LU-1920674 10.1108/09556221111136539 000295021600008 0955-6222 2011 0955-6222 2011 23 4 269 274 2011 No license (in copyright) published https://biblio.ugent.be/publication/1920674/file/1920677 application/pdf restricted https://biblio.ugent.be/publication/1920674/file/1920678 application/pdf private ug 1920674 2011-10-05T09:50:14Z 2026-03-31T07:39:41Z A1 VABB-1 conference C3 Vincent Nierstrasz aut author ug_TW11 Lucy Wanjiru Ciera aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 11th World Textile Conference (Autex 2011) eng Technology and Engineering http://hdl.handle.net/1854/LU-1318767 9782746628588 2011 9782746628588 Mulhouse, France Ecole Nationale Supérieure d'Ingénieurs Sud-Alsace (ENSISA) 2011 846 847 2011 No license (in copyright) published https://biblio.ugent.be/publication/1318767/file/1318978 application/pdf restricted ug 1318767 2011-06-22T15:22:22Z 2026-03-31T07:22:39Z C3 conference C3 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 J Alongi aut author A Frache aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 13th European Meeting on Fire Retardant Polymers eng Cotton biotechnology offers the potential for breakthrough developments in fiber characteristics. In this process, the early selection of fibers with the best performance is of utmost importance. However, due to the limited availability of these specialty fibers, the use of available test methods is limited and thus new test methodologies are needed. The aim of this paper is to study Cone calorimetry for the characterization of cotton fibers. One of the main aspects of the procedure, namely sample weight, is optimized to improve the reproducibility. Technology and Engineering http://hdl.handle.net/1854/LU-2085018 2011 Alessandria, Italy Politecnico di Torino 2011 1 2 2011 No license (in copyright) published https://biblio.ugent.be/publication/2085018/file/2085027 application/pdf ug 2085018 2012-04-12T13:51:44Z 2026-03-31T09:15:45Z C3 conference C3 Sander De Vrieze aut author ug_TW11 Bert De Schoenmaker aut author ug_UGent Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 1st International conference on Electrospinning (ElectroSpin 2010) : Latest development in electrospinning for materials and life sciences eng Technology and Engineering http://hdl.handle.net/1854/LU-856407 2010 Melbourne, Australia CSIRO Materials Science and Engineering 2010 25 25 2010 No license (in copyright) published https://biblio.ugent.be/publication/856407/file/1939196 application/pdf restricted ug 856407 2010-02-09T09:37:04Z 2023-05-08T11:47:19Z C3 journalArticle A4 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering http://hdl.handle.net/1854/LU-1140092 2010 Deinze Unitex vzw 2010 2010 / 5 40 40 2010 No license (in copyright) published https://biblio.ugent.be/publication/1140092/file/1140095 application/pdf restricted ug 1140092 2011-02-04T16:42:55Z 2026-03-31T07:07:07Z A4 VABB-1 conference C1 Bert De Schoenmaker aut author ug_UGent Sander De Vrieze aut author ug_TW11 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Zvonko Dragčević edt editor 5th International Textile, Clothing and Design Conference (ITC&DC 2010) : Magic world of textiles eng Technology and Engineering http://hdl.handle.net/1854/LU-1058192 2010 Zagreb, Croatia University of Zagreb. Faculty of Textile Technology 2010 71 76 2010 No license (in copyright) published https://biblio.ugent.be/publication/1058192/file/1058197 application/pdf restricted ug 1058192 2010-10-13T09:53:12Z 2026-03-31T05:53:44Z C1 VABB-5 conference C1 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Zvonko Dragčević edt editor 5th International Textile, Clothing and Design Conference (ITC&DC 2010) : Magic world of textiles eng Technology and Engineering http://hdl.handle.net/1854/LU-1058200 2010 Zagreb, Croatia University of Zagreb. Faculty of Textile Technology 2010 566 569 2010 No license (in copyright) published https://biblio.ugent.be/publication/1058200/file/1058203 application/pdf restricted ug 1058200 2010-10-13T10:13:34Z 2026-03-31T08:24:51Z C1 VABB-5 conference C1 Nele Daels aut author ug_UGent Sander De Vrieze aut author ug_TW11 Imca Sampers aut author ug_LA23 0000-0001-5536-7852 Bjorge Decostere aut author ug_UGent Philippe Westbroek aut author ug_TW11 Ann Dumoulin aut author ug_LA24 Pascal Dejans aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Raf Dewil edt editor Lise Appels edt editor Ann Hulsmans edt editor 6th European Meeting on Chemical Industry and Environment (EMChIE VI) eng Technology and Engineering http://hdl.handle.net/1854/LU-1106148 9789081548601 7 p. 2010 9789081548601 Mechelen, Belgium University College Lessius Mechelen 2010 2010 No license (in copyright) published https://biblio.ugent.be/publication/1106148/file/1108460 application/vnd.openxmlformats-officedocument.wordprocessingml.document private https://biblio.ugent.be/publication/1106148/file/1106164 application/pdf ug 1106148 2011-01-20T14:52:56Z 2026-03-31T07:04:53Z C1 VABB-5 conference C1 Nele Daels aut author ug_UGent Sander De Vrieze aut author ug_TW11 Imca Sampers aut author ug_LA23 0000-0001-5536-7852 Bjorge Decostere aut author ug_UGent Philippe Westbroek aut author ug_TW11 Ann Dumoulin aut author ug_LA24 Pascal Dejans aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Membranes in drinking and industrial water treatment (MIDW 2010) eng Technology and Engineering http://hdl.handle.net/1854/LU-1106171 7 p. 2010 International Water Association (IWA) 2010 2010 No license (in copyright) published https://biblio.ugent.be/publication/1106171/file/1106178 application/vnd.openxmlformats-officedocument.wordprocessingml.document private https://biblio.ugent.be/publication/1106171/file/1108441 application/pdf ug 1106171 2011-01-20T15:01:45Z 2026-03-31T07:04:53Z C1 VABB-5 conference C1 Nele Daels aut author ug_UGent Sander De Vrieze aut author ug_TW11 Imca Sampers aut author ug_LA23 0000-0001-5536-7852 Bjorge Decostere aut author ug_UGent Philippe Westbroek aut author ug_TW11 Ann Dumoulin aut author ug_LA24 Pascal Dejans aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 7th IWA World Water Congress and Exhibition eng Technology and Engineering http://hdl.handle.net/1854/LU-1106182 7 p. 2010 International Water Association (IWA) 2010 2010 No license (in copyright) published https://biblio.ugent.be/publication/1106182/file/1108427 application/pdf https://biblio.ugent.be/publication/1106182/file/1106190 application/vnd.openxmlformats-officedocument.wordprocessingml.document private ug 1106182 2011-01-20T15:08:16Z 2026-03-31T07:04:54Z C1 VABB-5 journalArticle Article A1 Lien Van der Schueren aut author ug_UGent Tybo Mollet aut author ug_UGent Özgür Ceylan aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering pH-indicators Halochromism Polyamide 6.6 Electrospinning TEMPERATURE TEXTILES DYES http://hdl.handle.net/1854/LU-1096698 10.1016/j.eurpolymj.2010.09.016 000285128700002 0014-3057 2010 0014-3057 2010 46 12 2229 2239 2010 No license (in copyright) published https://biblio.ugent.be/publication/1096698/file/1096709 application/pdf restricted ug 1096698 2011-01-10T17:13:14Z 2026-03-31T07:03:50Z A1 VABB-1 conference C3 Vincent Nierstrasz aut author ug_TW11 Lucy Wanjiru Ciera aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 3rd International symposium Research and Education in Innovation Era (ISREIE 2010) : Chemistry and application fields eng Technology and Engineering http://hdl.handle.net/1854/LU-1073366 2010 Arad, Romania University of Arad 2010 5 5 2010 No license (in copyright) published https://biblio.ugent.be/publication/1073366/file/1073367 application/pdf restricted ug 1073366 2010-11-12T13:47:59Z 2026-03-31T07:01:57Z C3 journalArticle Article A1 Sander De Vrieze aut author ug_TW11 Philippe Westbroek aut author ug_TW11 Tamara Van Camp aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering JETS NANOFIBERS NYLON-6 steady state electrospinning nanofibres FABRICATION FIBERS DIAMETER http://hdl.handle.net/1854/LU-839440 10.1002/app.30331 000271680700024 0021-8995 6 p. 2010 0021-8995 2010 115 2 837 842 2010 No license (in copyright) published https://biblio.ugent.be/publication/839440/file/849788 application/pdf restricted ug 839440 2010-01-26T12:38:15Z 2026-03-31T14:29:01Z A1 VABB-1 conference C1 Bert De Schoenmaker aut author ug_UGent Sander De Vrieze aut author ug_TW11 Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 10th World Textile Conference (AUTEX 2010) eng The hydrophilicity of nanofibrous structures is a key characteristic for many applications. However due to the high porosity of the structures, it is difficult to measure this property with contact angle measurements. Therefore a characterisation through wicking behaviour is more appropriate. The ISO-norm on wicking behaviour needs some refining to account for the specific nature of the highly porous nanofibrous structures. This refined method is used on polyamide 6 nanofibrous structures with different diameters and on polyamide 6 nanofibres with an incorporated hydrophilic compound. It was found that the fibre diameter is the major characteristic which influences the wicking behaviour. Technology and Engineering hydrophilicity Electrospinning wicking behaviour nanofibrous structures http://hdl.handle.net/1854/LU-988965 9789955258292 4 p. 2010 9789955258292 AUTEX 2010 2010 No license (in copyright) published https://biblio.ugent.be/publication/988965/file/988966 application/pdf restricted ug 988965 2010-06-28T10:03:52Z 2026-03-31T14:53:34Z C1 VABB-5 conference C1 Bert De Schoenmaker aut author ug_UGent Sander De Vrieze aut author ug_TW11 Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Merih Sariisik edt editor Gülseren Karabay edt editor 4th International Technical Textiles Congress eng Due to the high porosity of nanofibrous structures, it is difficult to measure the hydrofilicity of the material with contact angle measurements. Therefore, a new method to examine the wicking behaviour of the structures is developed. This method is used on several structures, which differ in fibre diameter and polyamide type. The structures with the thickest nanofibres have the highest wicking rates. For different polyamide types, the capillary forces establish the wicking behaviour in the initial phase. Further in the process, it is determined by the capillary forces and the water absorption capacity of the bulk phase. Technology and Engineering wicking behaviour nanofibrous structures polyamides http://hdl.handle.net/1854/LU-949458 9789754412857 7 p. 2010 9789754412857 Istanbul, Turkey Dokuz Eylül University. Department of Textile Engineering 2010 2010 No license (in copyright) published https://biblio.ugent.be/publication/949458/file/949470 application/pdf restricted ug 949458 2010-05-20T10:24:15Z 2026-03-31T14:53:04Z C1 VABB-5 conference C1 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Merih Sariisik edt editor Gülseren Karabay edt editor 4th International Technical Textiles Congress eng Colour changing textiles have recently gained much interest from the academic world. Although previously categorized as unwanted, colour changing textiles can be used in a broad field of applications since a colour change is a non-disturbing but clear signal which can perform a first warning function. This research focuses on halochromism or pH-sensitivity due to the importance of pH. These kind of materials can be applied in wound dressings, geotextiles, protective clothing etc. A halochromic wound dressing would for example be able to indicate the healing process of a wound since the pH-value varies during healing. Thanks to their extremely fine fibres, nanofibrous structures show interesting characteristics such as small pore size, high porosity and high specific surface area, which turn them suitable for a whole range of applications. Incorporating pH-sensitive dyes into nanofibrous structures would lead to unique materials that combine the intrinsic properties of nanofibres with an extra sensor functionality. As a start point, the feasibility of incorporating pH-indicator dyes in conventional textiles using standard dyeing processes was investigated. Next, the dyes were incorporated into a polyamide 6.6 nanofibrous structure by adding the dyes to the polymer solution before the start of the electrospinning process. The influence of this incorporation on the electrospinning process and the halochromic properties of the obtained structures were investigated. Our results proved that it is possible to develop a pH-sensor using conventional textiles dyed by a standard dyeing process. Also the incorporation of the pH-indicator dyes into a nanofibrous structure was possible. Moreover, the process parameters and fibre diameters were not influenced by this addition and reproducibility could be obtained. Furthermore, the majority of the obtained textile structures showed a clear colour change with a change in acidity. This halochromic behaviour was however different from the behaviour of the dyes in solution due to dye-fibre interactions. Technology and Engineering electrospinning nanofibrous structures conventional textiles halochromism http://hdl.handle.net/1854/LU-949484 9789754412857 6 p. 2010 9789754412857 Istanbul, Turkey Dokuz Eylül University. Department of Textile Engineering 2010 2010 No license (in copyright) published https://biblio.ugent.be/publication/949484/file/949495 application/pdf restricted ug 949484 2010-05-20T10:32:55Z 2026-03-31T14:53:04Z C1 VABB-5 conference C1 Sander De Vrieze aut author ug_TW11 N Daels aut author Philippe Westbroek aut author ug_TW11 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Merih Sariisik edt editor Gülseren Karabay edt editor 4th International Technical Textiles Congress eng Electrospinning is the process to generate nanofibers. Some very specific application fields are targeted in the literature about electrospinning. One of these research fields is filtration. In this field, mainly air filtration is targeted. Recent studies showed the strong performance of nanofibrous material in liquid filtration. For liquid (such as water) filtration the material needs to be flawless and pressure resistant. To cope with the first problem, we have developed a specific technology based on nozzle electrospinning. The key feature in our technology is the possibility to electrospin under steady state conditions. In each time period, the amount of polymer that is pumped out of the needle as a solution is the same as the amount of polymer that is deposited in the form of nanofibers. In the case of water filtration, a polyamide 6 nanofibrous nonwoven is created. The polyamide is chosen because of its high inherent strength. This high mechanical strength makes it possible for the material to withstand the pressure applied on the material during filtration. At this moment, projects are running to investigate if the polyamide 6 nanofibrous structures give an added value in the field of water filtration. The first results show that nanofibres enhance the water flux values at the same pressure. Next to flux investigations, experiments concerning the use of the membranes in a membrane bioreactor (MBR) are performed. These experiments show that the nanofibrous material has the same filtration efficiency as commercial MBR membranes. It even surpasses that efficiency with an extra functionalisation. Technology and Engineering Electrospinning membrane bioreactor steady state nanofibres http://hdl.handle.net/1854/LU-949507 9789754412857 7 p. 2010 9789754412857 Istanbul, Turkey Dokuz Eylül University. Department of Textile Engineering 2010 2010 No license (in copyright) published https://biblio.ugent.be/publication/949507/file/949539 application/pdf restricted ug 949507 2010-05-20T10:41:07Z 2026-03-31T14:53:04Z C1 VABB-5 conference C1 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Yusuf Ulcay edt editor Spring 2010 International conference on Fibrous Materials eng Technology and Engineering http://hdl.handle.net/1854/LU-949686 9786055919023 2010 9786055919023 Raleigh, NC, USA The Fiber Society 2010 101 102 2010 No license (in copyright) published https://biblio.ugent.be/publication/949686/file/949689 application/pdf restricted ug 949686 2010-05-20T11:17:50Z 2026-03-31T14:53:04Z C1 VABB-5 conference C1 Sander De Vrieze aut author ug_TW11 Bert De Schoenmaker aut author ug_UGent Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Yusuf Ulcay edt editor Spring 2010 International conference on Fibrous Materials eng Technology and Engineering http://hdl.handle.net/1854/LU-949710 9786055919023 2010 9786055919023 Raleigh, NC, USA The Fiber Society 2010 47 48 2010 No license (in copyright) published https://biblio.ugent.be/publication/949710/file/949723 application/pdf restricted ug 949710 2010-05-20T11:23:38Z 2026-03-31T14:53:04Z C1 VABB-5 journalArticle Article A1 Nele Daels aut author ug_UGent Sander De Vrieze aut author ug_TW11 Bjorge Decostere aut author ug_UGent Pascal Dejans aut author ug_UGent Ann Dumoulin aut author ug_LA24 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Philippe Westbroek aut author ug_TW11 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 eng Technology and Engineering Nanofibre Biofilm Activated sludge MBR Microfiltration MPE50 FLUX ENHANCING CHEMICALS Trickling filter POLYMER WASTE-WATER TREATMENT BIOREACTORS SLUDGE http://hdl.handle.net/1854/LU-982303 10.1016/j.desal.2010.02.027 000278195100024 0011-9164 2010 0011-9164 2010 257 1-3 170 176 2010 No license (in copyright) published https://biblio.ugent.be/publication/982303/file/982313 application/pdf restricted ug 982303 2010-06-22T10:05:49Z 2026-03-31T14:53:28Z A1 VABB-1 conference C3 Vincent Nierstrasz aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 10th World Textile Conference (AUTEX 2010) eng Technology and Engineering insect repellency dengue malaria protective textile http://hdl.handle.net/1854/LU-989091 2010 AUTEX 2010 173 173 2010 No license (in copyright) published https://biblio.ugent.be/publication/989091/file/989094 application/pdf ug 989091 2010-06-28T10:51:18Z 2026-03-31T14:53:34Z C3 journalArticle Article A1 Bjorge Decostere aut author ug_UGent Nele Daels aut author ug_UGent Sander De Vrieze aut author ug_TW11 Pascal Dejans aut author ug_UGent Tamara Van Camp aut author ug_UGent Wim Audenaert aut author ug_UGent Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Charlotte Boeckaert aut author ug_UGent Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 eng The aim of this study was to evaluate the use of nanofibre microfiltration membranes, spun by an innovative electrospinning technique, in water filtration applications. As such, this study bridges the gap between developments in electrospinning techniques for the production of flat-sheet membranes and the application of these membranes in water filtration. Three different applications were examined. Firstly, the use of the membrane (functionalised or non-functionalised) for the removal of pathogens was investigated. Secondly, the electrospun flat-sheet membranes were applied for wastewater treatment in a laboratory-scale submerged membrane bioreactor (MBR). In addition to these applications, physical properties such as clean water permeability (CWP) and strength were also examined. The tests showed that the electrospun membranes can be used for water filtration applications, but that further improvements are necessary before these membranes can be practically employed. In particular, the level of functionality and the properties of irreversible fouling require further research. Technology and Engineering WASTE-WATER MICROFILTRATION MEMBRANES MBR pathogen removal microfiltration electrospinning nanofibre http://hdl.handle.net/1854/LU-881386 000274194000020 0378-4738 5 p. 2010 0378-4738 2010 36 1 151 155 2010 No license (in copyright) published https://biblio.ugent.be/publication/881386/file/887660 application/pdf restricted ug 881386 2010-02-25T11:58:48Z 2026-03-31T14:52:08Z A1 VABB-1 journalArticle Article A1 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng The development of halochromic textile materials could lead to interesting end-use applications as it offers the potential for flexible pH-sensors with a first warning signal. Research on halochromic textiles, especially on the development of these materials using a simple and economic beneficial dyeing process, is however very limited. Therefore, we studied color-changing textile materials with a pH-sensitivity based on the dyeing of conventional textiles with standard watersoluble pH-indicator dyes. In a first broad screening, a set of pH-indicators is evaluated on their dyeing performance and their color change with a change in pH. After this, some promising indicators (Brilliant Yellow and Alizarin) are selected and studied in more detail. It was found that the indicators show different characteristics on the textile materials compared with the solution due to dye-fiber interactions. The properties of the pHindicator dyes are also dependant on the fiber type. Moreover, in case of Brilliant Yellow this thesis was confirmed by Raman spectroscopy. Generally, it can be concluded that it is feasible to develop a pH-sensor with pH-indicator dyes and conventional textile materials using a standard dyeing process. Technology and Engineering dyeing color changing textiles halochromism Brilliant Yellow Alizarin SENSOR DISPERSE DYES http://hdl.handle.net/1854/LU-947706 10.1177/0040517509346443 000276772000002 0040-5175 14 p. 2010 0040-5175 2010 80 7 590 603 2010 No license (in copyright) published https://biblio.ugent.be/publication/947706/file/947719 application/pdf restricted ug 947706 2010-05-18T10:35:42Z 2026-03-31T14:53:01Z A1 VABB-1 conference C1 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Jennifer Tata aut author Jenny Alongi aut author Alberto Frache aut author Alessandro Gigli edt editor 22nd IFATCC International Congress (Stresa 2010) eng Cotton is one of the most widely used natural fibres with very good overall properties. However, sustained, profitable cotton production suffers increasing pressure from the competition of synthetic fibres. To remain competitive on the market, it is necessary to direct the research towards the breakthrough technologies that are propelling this ancient crop into the high-tech world of tomorrow. The selection of the novel fibre types with the best performance in an early stage of this development process is very crucial and requires new test methods that can score new traits on a large number of small volume fibre samples. Therefore, it is essential to develop new methods or adapt existing ones and optimise them to be applicable on a few grams of fibre material. In the scope of this research 2 main fibre properties were chosen as focus aspects namely reactivity/dye ability and flame retardancy. Technology and Engineering CHARACTERISATION TECHNIQUES COTTON http://hdl.handle.net/1854/LU-947800 9788896679005 6 p. 2010 9788896679005 Stresa, Italy Associazione Italiana di Chimica Tessile e Coloristica (AICTC) 2010 2010 No license (in copyright) published https://biblio.ugent.be/publication/947800/file/947801 application/pdf restricted ug 947800 2010-05-18T11:29:17Z 2026-03-31T14:53:01Z C1 VABB-5 conference C1 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Alessandro Gigli edt editor 22nd IFATCC International Congress (Stresa 2010) eng Colour changing textiles or so called chameleon textiles can be used in a whole range of applications since a colour change is an easy, non-disturbing signal which can act as a first signal or warning sign. This paper focuses on pH-sensitive or halochromic textile materials. Standard pH-indicator dyes were incorporated into different textile materials. Firstly, conventional textiles such as cotton and nylon were studied. Secondly, electrospun nano-nonwovens were investigated in which the dyes were added at the start of the production process. The results of the broad screening process showed the feasibility of dyeing cotton and nylon with pH-indicator dyes. In addition to this, electrospinning of polymer solutions with pH-indicator dyes was also achievable. The results prove the possibility of incorporating pH-indicator dyes into textiles. Moreover, the halochromic properties were retained in most of the studied textile systems. It was however noticed that the chromism of the dyes depended on the medium due to the dyefibre interactions. Technology and Engineering NYLON PH-INDICATOR DYES COTTON HALOCHROMISM SENSOR http://hdl.handle.net/1854/LU-947819 9788896679005 6 p. 2010 9788896679005 Stresa, Italy Associazione Italiana di Chimica Tessile e Coloristica (AICTC) 2010 2010 No license (in copyright) published https://biblio.ugent.be/publication/947819/file/947820 application/pdf restricted ug 947819 2010-05-18T11:36:52Z 2026-03-31T14:53:01Z C1 VABB-5 conference C3 Nele Daels aut author ug_UGent Bjorge Decosteren aut author Sander De Vrieze aut author ug_TW11 Tamara Van Camp aut author ug_UGent Wim Audenaert aut author ug_UGent Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 10th Flemish Youth Conference of Chemistry (VJC 10) eng Chemistry http://hdl.handle.net/1854/LU-945341 2010 Koninklijke Vlaamse Chemische Vereniging. Jongerensectie 2010 2010 No license (in copyright) published https://biblio.ugent.be/publication/945341/file/1938814 application/pdf ug 945341 2010-05-11T11:20:38Z 2026-03-31T14:52:58Z C3 journalArticle A4 Sander De Vrieze aut author ug_TW11 Tamara Van Camp aut author ug_UGent Bjorge Decostere aut author ug_UGent Wim Audenaert aut author ug_UGent Philippe Westbroek aut author ug_TW11 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering http://hdl.handle.net/1854/LU-748561 2009 Deinze Unitex vzw 2009 2009 / 2 7 10 2009 published ug 748561 2009-09-11T11:53:25Z 2026-03-31T14:26:14Z A4 VABB-1 conference C3 Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 Vincent Nierstrasz aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 4th Annual Public Conference : From EU research to industrial innovation eng Technology and Engineering http://hdl.handle.net/1854/LU-594902 8 slides p. 2009 Brussels EURATEX ; European Technology Platform for the Future of Textiles and Clothing 2009 1 8 2009 No license (in copyright) published https://biblio.ugent.be/publication/594902/file/594905 application/pdf https://biblio.ugent.be/publication/594902/file/594904 application/x-ole-storage ug 594902 2009-04-17T09:41:25Z 2026-03-31T14:18:13Z C3 conference C3 Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 Sander De Vrieze aut author ug_TW11 Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 AITEX Info Day eng Technology and Engineering http://hdl.handle.net/1854/LU-602509 13 slides p. 2009 2009 1 13 2009 No license (in copyright) published https://biblio.ugent.be/publication/602509/file/602512 application/pdf ug 602509 2009-04-28T12:35:06Z 2026-03-31T14:19:32Z C3 journalArticle Article A1 Sander De Vrieze aut author ug_TW11 Tamara Van Camp aut author ug_UGent A. Nelvig aut author B. Hagstrom aut author Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Electrospinning is a process that generates nanofibres. Temperature and humidity affect this process. In this article the influence of humidity and temperature on the formation and the properties of nanofibres are studied using cellulose acetate (CA) and poly(vinylpyrrolidone) (PVP) as target materials. The experiments indicate that two major parameters are dependent of temperature and have their influence on the average fibre diameter. A first parameter is the solvent evaporation rate that increases with increasing temperature. The second parameter is the viscosity of the polymer solution that decreases with increasing temperature. The trend in variation of the average nanofibre diameter as a function of humidity is different for CA and PVP, which can be explained by variations in chemical and molecular interaction and its influence on the solvent evaporation rate. As the humidity increases, the average fibre diameter of the CA nanofibres increases, whilst for PVP the average diameter decreases. The average diameter of nanofibres made by electrospinning change significantly through variation of temperature and humidity. Technology and Engineering NANOFIBER DIAMETER PARAMETERS http://hdl.handle.net/1854/LU-516287 10.1007/s10853-008-3010-6 000263379500028 0022-2461 2009 0022-2461 233 SPRING ST, NEW YORK, NY 10013 USA Springer 2009 44 5 1357 1362 2009 No license (in copyright) published https://biblio.ugent.be/publication/516287/file/1136853 application/pdf restricted ug 516287 2009-03-10T10:40:24Z 2026-03-31T14:08:56Z A1 VABB-1 journalArticle Article A1 Bjorge Decostere aut author ug_UGent Nele Daels aut author ug_UGent Sander De Vrieze aut author ug_TW11 Pascal Dejans aut author ug_UGent Tamara Van Camp aut author ug_UGent Wim Audenaert aut author ug_UGent Joël Hogie aut author ug_LA24 0009-0000-1184-9032 Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 eng Technology and Engineering WASTE-WATER SILVER NANOPARTICLES MBR Pathogen removal Microfiltration Electrospinning Nanofiber MICROFILTRATION MEMBRANE POLYMER FIBERS http://hdl.handle.net/1854/LU-813794 10.1016/j.desal.2009.06.064 000272438500008 0011-9164 2009 0011-9164 2009 249 3 942 948 2009 No license (in copyright) published https://biblio.ugent.be/publication/813794/file/819744 application/pdf restricted ug 813794 2009-12-17T15:46:03Z 2026-03-31T14:28:05Z A1 VABB-1 conference C1 Özgür Ceylan aut author ug_UGent Lieve Van Landuyt aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 9th World Textile Conference eng The aim of this research is to develop a method to dye extremely small amounts of grey cotton and to adapt existing characterisation methods to these small amounts of fibres, so that the reactivity of the cotton fibres could be studied. A small scale laboratory method is developed to dye cotton with commercial dyes in vials. For the quantification of the dyeing levels of these small fibre samples, different techniques were adapted, such as UVVIS and Raman spectroscopy. The preferred method is dependent on the colour and the type of dye. Technology and Engineering UV-VIS Spectroscopy Characterisation Techniques Raman Spectroscopy Cotton http://hdl.handle.net/1854/LU-767505 9754837872 2009 9754837872 Izmir, Turkey Ege University. Department of Textiel engineering 2009 1033 1035 2009 No license (in copyright) published https://biblio.ugent.be/publication/767505/file/767519 application/pdf restricted ug 767505 2009-10-23T10:41:29Z 2026-03-31T14:26:22Z C1 VABB-5 conference C1 Lien Van der Schueren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens edt editor ug_UGent 0000-0002-8280-2108 International conference on Latest Advances in High-Tech Textiles and Textile-Based Materials eng This paper verifies the possibility of using standard water-soluble pH-indicator dyes in color change textile materials made out of conventional textiles and produced by a dyeing process. After a screening process in which the color depth, levelness and the color change properties of the dyed samples were examined, some dyes were selected to study in more detail. It was found that the behavior of the indicator dyes is different when the dyes are incorporated in textile materials instead of being dissolved in an aqueous solution. Our results show that it is possible to develop a textile pH-sensor using pH-indicators and conventional textiles. Technology and Engineering nylon pH-indicators cotton halochromism sensor http://hdl.handle.net/1854/LU-767586 9789081392426 3 p. 2009 9789081392426 Ghent, Belgium Ghent University. Department of Textiles 2009 38 40 2009 No license (in copyright) published https://biblio.ugent.be/publication/767586/file/767592 application/pdf ug 767586 2009-10-23T11:24:44Z 2026-03-31T14:26:22Z C1 VABB-5 conference C1 Sander De Vrieze aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens edt editor ug_UGent 0000-0002-8280-2108 International conference on Latest Advances in High-Tech Textiles and Textile-Based Materials eng Electrospinning is a relatively simple fibre-forming process and offers a unique method to produce nanofibers. The process exists at this moment 80 years and has seen a very turbulent history. There is a need to see what actually happened in this history. We have taken a brief look in the history of electrospinning. This paper is reporting on some of the aspects that electrospinning encountered. It is crucial to see that electrospinning has been used in different countries in different time periods. The history of electrospinning is mainly characterised by bad timing. The future of electrospinning looks however quit bright. Technology and Engineering History Electrospinning http://hdl.handle.net/1854/LU-767594 9789081392426 2009 9789081392426 Ghent, Belgium Ghent University. Department of Textiles 2009 60 63 2009 No license (in copyright) published https://biblio.ugent.be/publication/767594/file/767596 application/pdf ug 767594 2009-10-23T11:31:05Z 2026-03-31T14:26:22Z C1 VABB-5 conference C3 Nele Daels aut author ug_UGent Bjorge Decostere aut author ug_UGent Sander De Vrieze aut author ug_TW11 Pascal Dejans aut author ug_UGent T Van Camp aut author Wim Audenaert aut author ug_UGent Joël Hogie aut author ug_LA24 0009-0000-1184-9032 Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 1st IWA BeNeLux Regional Young Water Professionals Conference eng Technology and Engineering http://hdl.handle.net/1854/LU-901723 2009 2009 2009 published ug 901723 2010-03-11T13:48:17Z 2026-03-31T14:52:25Z C3 journalArticle Article A1 Els Van Nimmen aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Johan Verschuren aut author ug_UGent Kris Gellynck aut author ug_UGent Tom Gheysens aut author ug_UGent Johan Mertens aut author ug_UGent Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 eng Technology and Engineering Biology and Life Sciences spider silk FT-IR spectroscopy diffuse reflection attenuated total reflection transmission fibre TRANSFORM INFRARED-SPECTROSCOPY DIFFUSE-REFLECTANCE DRIFT SPECTROSCOPY COTTON-CELLULOSE OXIDATION CHEMISTRY PROTEINS FIBERS ACIDS http://hdl.handle.net/1854/LU-395666 000252610800011 0924-2031 2008 0924-2031 2008 46 1 63 68 2008 published ug 395666 2008-04-01T12:48:00Z 2026-03-31T13:21:19Z A1 VABB-1 journalArticle Review A1 Rino Morent aut author ug_TW17 0000-0001-6336-1485 Nathalie De Geyter aut author ug_TW17 0000-0001-7883-5786 Johan Verschuren aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 Christophe Leys aut author ug_TW17 0000-0003-1363-0768 eng Technology and Engineering http://hdl.handle.net/1854/LU-415667 10.1016/j.surfcoat.2007.12.027 000254867700038 0257-8972 3427-3449 p. 2008 0257-8972 2008 202 14 3427 3449 2008 No license (in copyright) published https://biblio.ugent.be/publication/415667/file/8609372 application/pdf restricted ug 415667 2008-05-23T12:02:00Z 2026-03-31T13:33:07Z A1 VABB-1 conference C1 Sander De Vrieze aut author ug_TW11 Tamara Van Camp aut author ug_UGent Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering http://hdl.handle.net/1854/LU-445699 2008 2008 2008 No license (in copyright) published https://biblio.ugent.be/publication/445699/file/4295218 application/pdf restricted ug 445699 2009-01-06T12:30:00Z 2026-03-31T14:08:14Z C1 VABB-5 journalArticle A2 Bjorge Decostere aut author ug_UGent Nele Daels aut author ug_UGent Sander De Vrieze aut author ug_TW11 Pascal Dejans aut author ug_UGent Tamara Van Camp aut author ug_UGent Wim Audenaert aut author ug_UGent Joël Hogie aut author ug_LA24 0009-0000-1184-9032 Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 dut Technology and Engineering http://hdl.handle.net/1854/LU-594958 1569-2361 2008 1569-2361 2008 7 4 17 28 2008 published ug 594958 2009-04-17T11:34:36Z 2026-03-31T14:18:13Z A2 VABB-1 conference C3 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 21st IFATCC International Congress : New Horizons of Textile Finishing eng Technology and Engineering http://hdl.handle.net/1854/LU-595022 2008 International Federation of Associations of Textile Chemists and Colorists (IFATCC) 2008 2008 published ug 595022 2009-04-17T13:40:24Z 2026-03-31T14:18:14Z C3 conference C3 Bjorge Decostere aut author ug_UGent Sander De Vrieze aut author ug_TW11 Pascal Dejans aut author ug_UGent Tamara Van Camp aut author ug_UGent Wim Audenaert aut author ug_UGent Joël Hogie aut author ug_LA24 0009-0000-1184-9032 Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Congres Water en Klimaatverandering eng Technology and Engineering http://hdl.handle.net/1854/LU-595023 2008 2008 2008 published ug 595023 2009-04-17T13:44:23Z 2026-03-31T14:18:14Z C3 conference C3 Bjorge Decostere aut author ug_UGent Sander De Vrieze aut author ug_TW11 Pascal Dejans aut author ug_UGent Tamara Van Camp aut author ug_UGent Wim Audenaert aut author ug_UGent Joël Hogie aut author ug_LA24 0009-0000-1184-9032 Nele Daels aut author Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Membrane symposium and 12th Poster day membrane technology eng Technology and Engineering http://hdl.handle.net/1854/LU-595029 2008 2008 2008 published ug 595029 2009-04-17T13:50:26Z 2026-03-31T14:18:14Z C3 conference C1 Sander De Vrieze aut author ug_TW11 Tamara Van Camp aut author ug_UGent A NELVIG aut author B HAGSTRöM aut author Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 und Technology and Engineering http://hdl.handle.net/1854/LU-430209 2008 2008 2008 published ug 430209 2008-09-18T15:47:00Z 2026-03-31T13:53:51Z C1 VABB-5 conference C1 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 Sander De Vrieze aut author ug_TW11 Tamara Van Camp aut author ug_UGent Bjorge Decostere aut author ug_UGent Wim Audenaert aut author ug_UGent Philippe Westbroek aut author ug_TW11 Stijn Van Hulle aut author ug_LA24 0000-0001-5773-7773 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering http://hdl.handle.net/1854/LU-430212 2008 2008 2008 published ug 430212 2008-09-18T15:51:00Z 2026-03-31T13:53:51Z C1 VABB-5 conference C1 Sander De Vrieze aut author ug_TW11 Tamara Van Camp aut author ug_UGent Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 und Technology and Engineering http://hdl.handle.net/1854/LU-430216 2008 2008 2008 published ug 430216 2008-09-18T15:55:00Z 2026-03-31T13:53:51Z C1 VABB-5 journalArticle Article A1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 H RAHIER aut author B VAN MELE aut author Philippe Westbroek aut author ug_TW11 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering http://hdl.handle.net/1854/LU-414240 000249312000027 0021-8995 1648-1658 p. 2007 0021-8995 JOHN WILEY & SONS INC 2007 106 3 1648 1658 2007 published ug 414240 2007-11-12T14:34:00Z 2026-03-31T13:14:07Z A1 VABB-1 journalArticle Article A1 Fungisai Matemadombo aut author Philippe Westbroek aut author ug_TW11 Tebello Nyokong aut author Kenneth Ozoemena aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering AQUEOUS-MEDIA CYTOCHROME-C electrocatalysis deposition SAM SELF-ASSEMBLED MONOLAYERS ELECTROCATALYTIC BEHAVIOR ELECTROCHEMICAL PROPERTIES RECORDABLE CDS CoTAPc gold L-CYSTEINE ELECTRODES PHTHALOCYANINES FILMS http://hdl.handle.net/1854/LU-594941 10.1016/j.electacta.2006.08.027 000243647700025 0013-4686 2007 0013-4686 Elsevier 2007 52 5 2024 2031 2007 No license (in copyright) published https://biblio.ugent.be/publication/594941/file/607208 application/pdf restricted ug 594941 2009-04-17T11:05:04Z 2026-03-31T14:18:13Z A1 VABB-1 bookChapter B2 JB St. Laurent aut author F de Buzzaccarini aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 H Demeyere aut author R Lebeque aut author R Lodewick aut author Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 eng Technology and Engineering http://hdl.handle.net/1854/LU-594962 978-0-444-51664-0 2007 Ingegard Johansson edt editor P Somasundaran edt editor 978-0-444-51664-0 Elsevier 2007 2007 published ug 594962 2009-04-17T11:53:50Z 2026-03-31T14:18:14Z B2 VABB-4 conference C1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Patric Van Oostveldt aut author ug_UGent Philippe Westbroek aut author ug_TW11 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 und Technology and Engineering http://hdl.handle.net/1854/LU-344819 183-184 p. 2006 THE FIBER SOCIETY 2006 183 184 2006 published ug 344819 2006-08-03T15:14:00Z 2026-03-31T13:08:08Z C1 VABB-5 journalArticle Article A1 Djamal Akbarov aut author Bahkhodir Baymuratov aut author Philippe Westbroek aut author ug_TW11 Rustam Akbarov aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Novel treatments for the reduction of dyebath induced hygral expansion are described. Their application in Neolan P dyebaths offers the potential for reduced dimensional instability with a limited impact on the final fabric colour. Technology and Engineering WOOL http://hdl.handle.net/1854/LU-332342 10.1007/s10800-005-9085-8 000235116000004 0021-891X 411-418 p. 2006 0021-891X Springer 2006 36 4 411 418 2006 No license (in copyright) published https://biblio.ugent.be/publication/332342/file/1135539 application/pdf restricted ug 332342 2006-04-24T14:50:00Z 2026-03-31T13:07:10Z A1 VABB-1 journalArticle Article A1 Philippe Westbroek aut author ug_TW11 Georgios Priniotakis aut author ug_TW11 Elina Palovuori aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Lieva Van Langenhove aut author ug_TW11 ug_TW18 0000-0001-9802-7399 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng In this paper an electrochemical cell is developed to test and follow-up the quality of electrodes made of knitted, woven and non-woven conductive textile material. This cell is constructed of two electrodes planarly positioned against each other using a series of PVC plates. The obtained impedance, as a result of applied alternating potential and measured current signal, is equal to the resistance of the system electrode-electrolyte in the frequency region where no shift is observed in phase angle between applied potential and measured current. This resistance provides information about the properties and performance of the electrodes and a change of this resistance during the lifetime of the electrodes is an interesting parameter for quality control of the used electrodes. After characterization of the cell a range of textile electrodes (woven, non-woven and knitted) were investigated and compared. Results showed that the textile electrodes behave initially similar, obeying an equation that shows that the resistance is proportional to d, c(-1) and A(-2/3), d being the distance between the electrodes, c the electrolyte concentration and A the electrode surface. However, after longer exposure some indication of corrosion and malfunction was detected. Technology and Engineering GARMENT MANUFACTURE INTELLIGENT TEXTILE http://hdl.handle.net/1854/LU-335300 10.1177/0040517506053911 000237128300007 0040-5175 152-159 p. 2006 0040-5175 London, UK Sage Publications ltd 2006 76 2 152 159 2006 published ug 335300 2006-05-18T15:24:00Z 2026-03-31T13:07:27Z A1 VABB-1 journalArticle Article A1 E GASANA aut author Philippe Westbroek aut author ug_TW11 Jean Hakuzimana aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Georgios Priniotakis aut author ug_UGent Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 D TSELES aut author eng Technology and Engineering http://hdl.handle.net/1854/LU-365255 000244831800192 0257-8972 3547-3551 p. 2006 0257-8972 ELSEVIER SCIENCE SA 2006 201 6 3547 3551 2006 published ug 365255 2007-05-08T12:12:00Z 2026-03-31T13:17:27Z A1 VABB-1 journalArticle A2 E Bolhová aut author A Ujhelyiová aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Patric Van Oostveldt aut author ug_UGent A Marcinčin aut author eng Technology and Engineering http://hdl.handle.net/1854/LU-594955 1335-0617 2006 1335-0617 2006 13 1-2 16 22 2006 published ug 594955 2009-04-17T11:31:04Z 2026-03-31T14:18:13Z A2 VABB-1 conference C1 A Ujhelyiova aut author E Bolhova aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 A Marcincin aut author 3rd International Textile, Clothing and Design Conference (TC&DC 2006) : Magic world of textiles eng Technology and Engineering http://hdl.handle.net/1854/LU-595014 2006 2006 360 365 2006 published ug 595014 2009-04-17T13:36:11Z 2026-03-31T14:18:14Z C1 VABB-5 journalArticle Article A1 D AKBAROV aut author B BAYMURATOV aut author R AKBAROV aut author Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering http://hdl.handle.net/1854/LU-316258 000228093200002 0040-5175 197-202 p. 2005 0040-5175 TEXTILE RESEARCH INST 2005 75 3 197 202 2005 published ug 316258 2005-06-17T09:51:00Z 2026-03-31T13:17:02Z A1 VABB-1 journalArticle Article A1 Johan Verschuren aut author P VAN HERZELE aut author Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering http://hdl.handle.net/1854/LU-323486 000232607900011 0040-5175 437-441 p. 2005 0040-5175 TEXTILE RESEARCH INST 2005 75 5 437 441 2005 published ug 323486 2005-12-09T11:34:00Z 2026-03-31T13:17:10Z A1 VABB-1 journalArticle Article A1 Gustaaf Schoukens aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering http://hdl.handle.net/1854/LU-300422 000226430600026 0032-3861 845-857 p. 2005 0032-3861 ELSEVIER SCI LTD 2005 46 3 845 857 2005 published ug 300422 2005-03-22T12:06:00Z 2026-03-31T13:18:49Z A1 VABB-1 journalArticle Article A1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Patric Van Oostveldt aut author ug_UGent Hubert Rahier aut author Bruno Van Mele aut author Philippe Westbroek aut author ug_TW11 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering DYEING PROPERTIES BOUNDARY-LAYER THERMAL-PROPERTIES CONCENTRATION-DEPENDENCE confocal laser scanning microscopy poly(ethylene terephthalate) fibres dye diffusion POLYESTER SORPTION INTERRELATION POLYAMIDE http://hdl.handle.net/1854/LU-300116 10.1016/j.polymer.2004.10.074 000226316700011 0032-3861 2005 0032-3861 2005 46 1 101 108 2005 No license (in copyright) published https://biblio.ugent.be/publication/300116/file/1015056 application/pdf restricted ug 300116 2005-03-17T16:36:00Z 2026-03-31T14:31:29Z A1 VABB-1 conference C1 D AKBAROV aut author B BAYMURATOV aut author Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 und Technology and Engineering http://hdl.handle.net/1854/LU-293163 2004 ENSAIT 2004 2004 published ug 293163 2004-07-06T12:38:00Z 2026-03-31T14:29:09Z C1 VABB-5 journalArticle Article A1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Patric Van Oostveldt aut author ug_UGent Hubert Rahier aut author Bruno Van Mele aut author Philippe Westbroek aut author ug_TW11 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering POLYESTER MICROFIBERS THERMAL-PROPERTIES glass transition poly(ethylene terephthalate) fibres dye diffusion BOUNDARY-LAYER DISPERSE DYES SORPTION http://hdl.handle.net/1854/LU-297184 10.1016/j.polymer.2004.03.103 000221779000014 0032-3861 2004 0032-3861 2004 45 12 4105 4112 2004 No license (in copyright) published https://biblio.ugent.be/publication/297184/file/1015069 application/pdf restricted ug 297184 2005-01-07T12:06:00Z 2026-03-31T14:30:22Z A1 VABB-1 journalArticle Article A1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 H RAHIER aut author B VAN MELE aut author Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering http://hdl.handle.net/1854/LU-214070 000184514900017 0021-8995 3840-3849 p. 2003 0021-8995 JOHN WILEY & SONS INC 2003 89 14 3840 3849 2003 published ug 214070 2004-05-03T13:04:00Z 2026-03-31T13:12:48Z A1 VABB-1 journalArticle Article A1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 H RAHIER aut author B VAN MELE aut author Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering http://hdl.handle.net/1854/LU-214073 000184515100013 0021-8995 105-114 p. 2003 0021-8995 JOHN WILEY & SONS INC 2003 90 1 105 114 2003 published ug 214073 2004-05-03T13:13:00Z 2026-03-31T13:12:48Z A1 VABB-1 conference C1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 H RAHIER aut author B VAN MELE aut author P VAN OOSTVELDT aut author Philippe Westbroek aut author ug_TW11 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 und Technology and Engineering http://hdl.handle.net/1854/LU-214076 cd-rom-cd-rom p. 2003 2003 2003 published ug 214076 2004-05-03T13:18:00Z 2026-03-31T09:19:50Z C1 VABB-5 journalArticle Article A1 Philippe Westbroek aut author ug_TW11 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 E GASANA aut author Eduard Temmerman aut author ug_UGent eng Technology and Engineering http://hdl.handle.net/1854/LU-209573 000188095700009 0040-5175 2003 0040-5175 2003 73 12 1079 1084 2003 published ug 209573 2004-04-08T13:50:00Z 2026-03-31T07:46:53Z A1 VABB-1 journalArticle Article A1 E GASANA aut author Philippe Westbroek aut author ug_TW11 Karolien De Wael aut author ug_WE08 Eduard Temmerman aut author ug_UGent Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering http://hdl.handle.net/1854/LU-209595 000185368700004 0022-0728 2003 0022-0728 2003 553 35 42 2003 published ug 209595 2004-04-08T15:14:00Z 2026-03-31T07:46:53Z A1 VABB-1 conference C1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 H RAHIER aut author B VAN MELE aut author Patric Van Oostveldt aut author ug_UGent Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 eng Technology and Engineering http://hdl.handle.net/1854/LU-161284 2002 2002 2002 published ug 161284 2004-01-14T13:39:00Z 2026-03-31T07:33:12Z C1 VABB-5 journalArticle A4 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 dut Technology and Engineering http://hdl.handle.net/1854/LU-594961 2002 Deinze Unitex vzw 2002 2002 / 2 57 57 2002 published ug 594961 2009-04-17T11:49:29Z 2026-03-31T14:18:14Z A4 VABB-1 conference C1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 Fibres and Textiles for the Future : 90th Anniversary of Academic Textile Research and Education in Finland eng Technology and Engineering http://hdl.handle.net/1854/LU-144732 2001 2001 83 90 2001 published ug 144732 2004-01-14T13:38:00Z 2026-03-31T07:27:18Z C1 VABB-5 conference C1 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 eng Technology and Engineering http://hdl.handle.net/1854/LU-264472 1996 1996 1996 published ug 264472 2004-05-24T13:31:00Z 2026-03-31T09:39:00Z C1 VABB-5 conference C1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 Patric Van Oostveldt aut author ug_UGent Joint Meeting Belgische Vereniging voor Microscopie / Nederlandse Vereniging voor Microscopie eng Technology and Engineering http://hdl.handle.net/1854/LU-595006 1996 Gent Belgische Vereniging voor Microscopie ; Nederlandse Vereniging voor Microscopie 1996 1996 published ug 595006 2009-04-17T13:26:33Z 2026-06-04T09:27:52Z C1 VABB-5 conference C1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 Paul Kiekens aut author ug_UGent 0000-0002-8280-2108 Patric Van Oostveldt aut author ug_UGent 17th IFVTCC Congress eng Technology and Engineering http://hdl.handle.net/1854/LU-595002 1996 1996 201 203 1996 published ug 595002 2009-04-17T13:22:12Z 2026-06-04T09:29:26Z C1 VABB-5 journalArticle Article A1 Karen De Clerck aut author ug_TW11 0000-0002-5650-3075 CM Carr aut author KJ Dodd aut author eng Novel treatments for the reduction of dyebath induced hygral expansion are described. Their application in Neolan P dyebaths offers the potential for reduced dimensional instability with a limited impact on the final fabric colour. Technology and Engineering WOOL http://hdl.handle.net/1854/LU-594929 A1993NJ47200009 0040-5000 1993 0040-5000 1993 84 4 611 618 1993 published ug 594929 2009-04-17T10:39:15Z 2026-03-31T14:18:13Z A1 VABB-1