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Thermally and mechanically stable β-cyclodextrin/cellulose acetate nanofibers synthesized using an environmentally benign procedure

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Abstract
Electrospun cyclodextrin (CD)-based nanofibers with capabilities to remove pollutants from water have been synthesized and characterized. The high-quality nanofibers presented here were synthesized in two simple steps that involved in-situ electrospinning of the nanofibers and all nanocomponents, followed by the reduction of silver (Ag+) and iron (Fe3+) ions to nanoparticles using an environmentally benign process that involved irradiation of the electrospun fibers using a tailor-made UV-equipped furnace at low temperatures. In the previously reported study it was observed that Ag and Fe nanoparticles effectively removed a range of different strains of Gram-negative and Gram-positive bacteria from water. As such, this study focused on improving the thermal and mechanical properties of the nanofibers prepared from polymer blends of beta-CDs with cellulose acetate (CA) and small additions (2wt%) of functionalized multiwalled carbon nanotubes (f-MWCNTs). The electrospinning parameters were varied to determine the optimum conditions for preparation of uniform non-beaded nanofibers. Bead-free and uniform nanofibers were obtained at a polymer concentration of 32% at the ratio of 1:1 -CDs:CA, syringe injection flow rate of 0.7mLh(-1), 15cm between the tip of the spinneret and the collector, and a voltage of 16 kV. The addition of f-MWCNTs was found to improve the tensile strength of the nanofibers by twofold, relative to nanofibers with no f-MWCNTs. The thermal degradation of the nanofibers was improved by a magnitude of 50 degrees C. The study has shown that adding small amounts of f-MWCNTs improved the thermal stability and mechanical strength of the CD/CA nanofibers significantly.

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Chicago
Nthunya, Lebea, Monaheng L Masheane, Soraya P Malinga, Edward N Nxumalo, Bhekie B Mamba, and Sabelo D Mhlanga. 2017. “Thermally and Mechanically Stable Β-cyclodextrin/cellulose Acetate Nanofibers Synthesized Using an Environmentally Benign Procedure.” International Journal of Smart and Nano Materials 8 (1): 1–19.
APA
Nthunya, L., Masheane, M. L., Malinga, S. P., Nxumalo, E. N., Mamba, B. B., & Mhlanga, S. D. (2017). Thermally and mechanically stable β-cyclodextrin/cellulose acetate nanofibers synthesized using an environmentally benign procedure. INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS, 8(1), 1–19.
Vancouver
1.
Nthunya L, Masheane ML, Malinga SP, Nxumalo EN, Mamba BB, Mhlanga SD. Thermally and mechanically stable β-cyclodextrin/cellulose acetate nanofibers synthesized using an environmentally benign procedure. INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS. 2017;8(1):1–19.
MLA
Nthunya, Lebea, Monaheng L Masheane, Soraya P Malinga, et al. “Thermally and Mechanically Stable Β-cyclodextrin/cellulose Acetate Nanofibers Synthesized Using an Environmentally Benign Procedure.” INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS 8.1 (2017): 1–19. Print.
@article{8566479,
  abstract     = {Electrospun cyclodextrin (CD)-based nanofibers with capabilities to remove pollutants from water have been synthesized and characterized. The high-quality nanofibers presented here were synthesized in two simple steps that involved in-situ electrospinning of the nanofibers and all nanocomponents, followed by the reduction of silver (Ag+) and iron (Fe3+) ions to nanoparticles using an environmentally benign process that involved irradiation of the electrospun fibers using a tailor-made UV-equipped furnace at low temperatures. In the previously reported study it was observed that Ag and Fe nanoparticles effectively removed a range of different strains of Gram-negative and Gram-positive bacteria from water. As such, this study focused on improving the thermal and mechanical properties of the nanofibers prepared from polymer blends of beta-CDs with cellulose acetate (CA) and small additions (2wt\%) of functionalized multiwalled carbon nanotubes (f-MWCNTs). The electrospinning parameters were varied to determine the optimum conditions for preparation of uniform non-beaded nanofibers. Bead-free and uniform nanofibers were obtained at a polymer concentration of 32\% at the ratio of 1:1 -CDs:CA, syringe injection flow rate of 0.7mLh(-1), 15cm between the tip of the spinneret and the collector, and a voltage of 16 kV. The addition of f-MWCNTs was found to improve the tensile strength of the nanofibers by twofold, relative to nanofibers with no f-MWCNTs. The thermal degradation of the nanofibers was improved by a magnitude of 50 degrees C. The study has shown that adding small amounts of f-MWCNTs improved the thermal stability and mechanical strength of the CD/CA nanofibers significantly.},
  author       = {Nthunya, Lebea and Masheane, Monaheng L and Malinga, Soraya P and Nxumalo, Edward N and Mamba, Bhekie B and Mhlanga, Sabelo D},
  issn         = {1947-5411},
  journal      = {INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS},
  language     = {eng},
  number       = {1},
  pages        = {1--19},
  title        = {Thermally and mechanically stable \ensuremath{\beta}-cyclodextrin/cellulose acetate nanofibers synthesized using an environmentally benign procedure},
  url          = {http://dx.doi.org/10.1080/19475411.2017.1289276},
  volume       = {8},
  year         = {2017},
}

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