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Single‐particle electrophoresis for studying the adsorption of cationic polymers onto anionic particles

Ingrid Amer Cid (UGent) , Lenny Van Daele (UGent) , Peter Dubruel (UGent) , Kristiaan Neyts (UGent) and Filip Strubbe (UGent)
(2023) ELECTROPHORESIS. 44(3-4). p.417-430
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Abstract
Understanding the adsorption of polymers onto particles is crucial for many technological and biomedical applications. Even though polymer adsorption on particles is a dynamic process, most experimental techniques can only study the adsorption indirectly, in equilibrium and on the ensemble level. New analysis methods are required to overcome these limitations. We investigated the use of single-particle electrophoresis to study the adsorption kinetics of cationic polymers onto anionic particles and compared the resulting data to a theoretical model. In this approach, the electrophoretic mobility of single polystyrene (PS) particles, exposed to different concentrations of poly(2-guanidinoethyl methacrylate), was measured as a function of time. The polymer adsorption leads to an electrophoretic mobility change of the PS particle over time, from the initial negative value to a positive value at equilibrium. By fitting the kinetics data to the Langmuir model, the adsorption rate, desorption rate and equilibrium constant were determined. Finally, the adsorption kinetics of several other polymers was investigated. This showed that the presented technique enables direct analysis and comparison of the kinetics of polymer adsorption on the single-particle level.
Keywords
single particle, electrophoresis, polymer, cationic polymers, electrophoretic mobility, kinetics, polymer adsorption, CHARGE-DENSITY POLYCATION, ATR FTIR SPECTROSCOPY, LATEX-PARTICLES, POLYELECTROLYTE ADSORPTION, COLLOIDAL PARTICLE, MOLECULAR-WEIGHT, KINETICS, SILICA, FLOCCULATION, POLYACRYLAMIDE

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Citation

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MLA
Amer Cid, Ingrid, et al. “Single‐particle Electrophoresis for Studying the Adsorption of Cationic Polymers onto Anionic Particles.” ELECTROPHORESIS, vol. 44, no. 3–4, 2023, pp. 417–30, doi:10.1002/elps.202200209.
APA
Amer Cid, I., Van Daele, L., Dubruel, P., Neyts, K., & Strubbe, F. (2023). Single‐particle electrophoresis for studying the adsorption of cationic polymers onto anionic particles. ELECTROPHORESIS, 44(3–4), 417–430. https://doi.org/10.1002/elps.202200209
Chicago author-date
Amer Cid, Ingrid, Lenny Van Daele, Peter Dubruel, Kristiaan Neyts, and Filip Strubbe. 2023. “Single‐particle Electrophoresis for Studying the Adsorption of Cationic Polymers onto Anionic Particles.” ELECTROPHORESIS 44 (3–4): 417–30. https://doi.org/10.1002/elps.202200209.
Chicago author-date (all authors)
Amer Cid, Ingrid, Lenny Van Daele, Peter Dubruel, Kristiaan Neyts, and Filip Strubbe. 2023. “Single‐particle Electrophoresis for Studying the Adsorption of Cationic Polymers onto Anionic Particles.” ELECTROPHORESIS 44 (3–4): 417–430. doi:10.1002/elps.202200209.
Vancouver
1.
Amer Cid I, Van Daele L, Dubruel P, Neyts K, Strubbe F. Single‐particle electrophoresis for studying the adsorption of cationic polymers onto anionic particles. ELECTROPHORESIS. 2023;44(3–4):417–30.
IEEE
[1]
I. Amer Cid, L. Van Daele, P. Dubruel, K. Neyts, and F. Strubbe, “Single‐particle electrophoresis for studying the adsorption of cationic polymers onto anionic particles,” ELECTROPHORESIS, vol. 44, no. 3–4, pp. 417–430, 2023.
@article{01GKS2B32MGZE7S38YWEWWAZZR,
  abstract     = {{Understanding the adsorption of polymers onto particles is crucial for many technological and biomedical applications. Even though polymer adsorption on particles is a dynamic process, most experimental techniques can only study the adsorption indirectly, in equilibrium and on the ensemble level. New analysis methods are required to overcome these limitations. We investigated the use of single-particle electrophoresis to study the adsorption kinetics of cationic polymers onto anionic particles and compared the resulting data to a theoretical model. In this approach, the electrophoretic mobility of single polystyrene (PS) particles, exposed to different concentrations of poly(2-guanidinoethyl methacrylate), was measured as a function of time. The polymer adsorption leads to an electrophoretic mobility change of the PS particle over time, from the initial negative value to a positive value at equilibrium. By fitting the kinetics data to the Langmuir model, the adsorption rate, desorption rate and equilibrium constant were determined. Finally, the adsorption kinetics of several other polymers was investigated. This showed that the presented technique enables direct analysis and comparison of the kinetics of polymer adsorption on the single-particle level.}},
  author       = {{Amer Cid, Ingrid and Van Daele, Lenny and Dubruel, Peter and Neyts, Kristiaan and Strubbe, Filip}},
  issn         = {{0173-0835}},
  journal      = {{ELECTROPHORESIS}},
  keywords     = {{single particle,electrophoresis,polymer,cationic polymers,electrophoretic mobility,kinetics,polymer adsorption,CHARGE-DENSITY POLYCATION,ATR FTIR SPECTROSCOPY,LATEX-PARTICLES,POLYELECTROLYTE ADSORPTION,COLLOIDAL PARTICLE,MOLECULAR-WEIGHT,KINETICS,SILICA,FLOCCULATION,POLYACRYLAMIDE}},
  language     = {{eng}},
  number       = {{3-4}},
  pages        = {{417--430}},
  title        = {{Single‐particle electrophoresis for studying the adsorption of cationic polymers onto anionic particles}},
  url          = {{http://doi.org/10.1002/elps.202200209}},
  volume       = {{44}},
  year         = {{2023}},
}

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