Photocontrol of zeta-potential of poly(styrene) particles prepared by soap-free emulsion copolymerization

Hiroaki Kishimoto, Tomokazu Iyoda, Masaru Nakagawa, Masaru Watanabe, Katsutoshi Naga

Research output: Contribution to conferencePaperpeer-review


We previously reported the photo-oxidation method for preparing charge-photocontrolled cationic poly(styrene) particles in water. When the aqueous dispersion was irradiated with UV light, the zeta-potential was shifted negatively due to photo-oxidation and the average diameter was maintained. In this study, we report that the photocontrol method of zeta potential was applicable to several types of poly(styrene) particles, such as cationic, zwitterionic and anionic microspheres. The poly(styrene) particles were prepared by soap-free emulsion copolymerization. The changes of zeta potential and average diameter by UV light exposure were investigated using the three-kind of poly(styrene) microspheres.

Original languageEnglish
Number of pages2
Publication statusPublished - 2005 Dec 1
Externally publishedYes
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: 2005 Sept 202005 Sept 22


Other54th SPSJ Symposium on Macromolecules


  • Photo-oxidation
  • Photocontrol
  • Poly(styrene) particle
  • Soap-free emulsion copolymerization
  • Surface reformation
  • Zeta potential

ASJC Scopus subject areas

  • Engineering(all)


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