Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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The Effect of Various Hydrophilic Acrylic Comonomers on Soap-Free Emulsion Polymerization of Styrene-Butadiene Rubber

Styrene-Butadiene 무유화제 유화공중합에서의 아크릴계 친수성 공단량체의 영향

  • Chung, Huey-Sil (Research and Development Center, Hyundai Petrochemical Co., Ltd.) ;
  • Lee, Chang-Sung (Department of Polymer Science and Engineering, Pusan National University) ;
  • Kim, Byung-Kyu (Department of Polymer Science and Engineering, Pusan National University) ;
  • Shin, Young-Jo (Department of Polymer Science and Engineering, Pusan National University)
  • 정희실 (현대석유화학(주) 연구소) ;
  • 이창성 (부산대학교 고분자공학과) ;
  • 김병규 (부산대학교 고분자공학과) ;
  • 신영조 (부산대학교 고분자공학과)
  • Published : 1993.12.31
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Abstract

A number of hydrophilic acrylic comonomers were incorporated into styrene-butadiene soap-free emulsion polymerization. It was found that reaction rate decreased according to : AN>AA>MMA>EA>IA>AAM>MA>HEMA. It was also observed that reaction rate increased with decreasing H-bonding factor contribution to the solubility parameter of the hydrophilic comonoer. The SBR latexes were very monodisperse with the particle size distribution of $1.03{\times}1.12$. Since growth rate is proportional to polymerization time, the difference in conversion rates between various comonomers was resulted from the particle number density of SBR latexes for the various hydrophilic comonomers. It was also found that the colloidal stability of the latexes was excellent because no external emulsifier was incorporated.

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