A Study on Particle Size with Polymerization Factor in Dispersion Copolymerization of Styrene/n-Butylmethacrylate and Alumina

스티렌/노말 부틸 메타크릴레이트와 알루미나의 분산 공중합에서 중합인자에 따른 입경변화 연구

  • Bang, Hyun-Su (Susan High Polymers Co., LTD.) ;
  • Cho, Ur-Ryong (Department of Applied Chemical Engineering, Korea Institute of Technology and Education)
  • 방현수 (수산고분자(주)) ;
  • 조을룡 (한국기술교육대학교 응용화학공학과)
  • Published : 2008.12.31

Abstract

In order to synthesize polymer particle containing inorganic material, styrene and nbutylmetacrylate were copolymerized with alumina by dispersion polymerization. The ratio in weight of styrene to n-butyl methacrylate was 3:1. Poly(N-vinyl pyrrolidon) and 2,2'-azobis(isobutyronitrile) were added as stabilizer and as initiator, respectively. The change of particle size was investigated with concentration of initiator, the type of medium, the mixed solubility parameter (${\delta}_{mix}$) of medium, and coupling agent. The enhancement in concentration of initiator resulted in slight increase of particle size. The increase of polarizability in medium also yielded the increase of particle size. In case of changing the ratio of isopropanol to distilled water, we could find relationship of $[{\delta}_{mix}]^{-4.01}\;{\propto}$ particle size and $[{\delta}_{mix}]^{-0.83}\;{\propto}$ particle size distribution(PSD). The type and the concentration of coupling agent showed no effect on the particle size and PSD.

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