Proceedings of the Korean Fiber Society Conference (한국섬유공학회:학술대회논문집)

The Korean Fiber Society (한국섬유공학회)
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Preparation and Surface Charge Characterization of Polystyrene Particles and Powders with Carboxyl and/or Poly(ethylene glycol) Groups

  • Kim, Bae-Joong (Center for Advanced Functional Polymers, Department of Fiber ＆ Polymer Engineering, Hanyang University) ;
  • Kim, Seong-Hun (Center for Advanced Functional Polymers, Department of Fiber ＆ Polymer Engineering, Hanyang University) ;
  • Park, Ki-Hong (Optoelectronics Material Research Center, Korea Institute of Science and Technology)
  • Published : 2003.10.01
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Abstract

Cross-linked polystyrene (PS) particles with carboxyl and/or poly(ethylene glycol) units on surface were formed by an emulsifier-free emulsion polymerization using styrene, methacrylic acid (MA), and poly(ethylene glycol) dimethacrylate (PEG-diMMA) at pH 7, and followed by freeze-drying to give the corresponding powders. Monodisperse polymer particles could be obtained at a concentration of PEG-diMMA 1 mol% relative to styrene. Zeta potential of polymer surface was measured to be 91 mV at a polymer of PEG-diMMA 1 mol% and was dropped as the content of MA increased.

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