Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Ultrasound Energy Effect as Initiator of Polystyrene Latex Polymerization

Polystyrene Latex 제조공정에서 초음파 에너지의 개시효과

  • Lee, Seung-Bum (Dept. of Chem. Eng., College of Eng., Dankook Univ.) ;
  • Kim, Won-Il (Dept. of Chem. Eng., College of Eng., Dankook Univ.) ;
  • Hong, In-Kwon (Dept. of Chem. Eng., College of Eng., Dankook Univ.)
  • 이승범 (단국대학교 공과대학 화학공학과) ;
  • 김원일 (단국대학교 공과대학 화학공학과) ;
  • 홍인권 (단국대학교 공과대학 화학공학과)
  • Published : 1996.08.30
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Abstract

Polymer latices, prepared from the emulsion polymerization of vinyl monomer compounds, are widely used for many industrial applications. Included among these are uses in paints, adhesives, flocculants, and heavy-duty plastics as well as their original use in synthetic rubber compounds. The emulsion polymerization process with chemical initiator has chemical disadvantage such as removal of initiator which was left after polymerization. In this study, polystyrene latex was prepared by using ultrasonic irradiation which generate the free radical, and then it was analyzed by GPC. Reaction temperature hardly have an effect on average molecular weight. Average molecular weight is increased by increasing amount of surfactant, i.e. SDS, but polydispersity is decreased. After 90 minutes of reaction time, increase and decrease of average molecular weight Is repeated. It is proposed that monodisperse polymer is obtained by controlling ultrasonic irradiation time and surfactant concentration.

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