A Study on Starch-acrylic Graft Copolymerization by Emulsion Polymerization

유화중합에 의한 전분-아크릴 그래프트 공중합에 관한 연구

  • Hwang, Ju-Ho (Nipsea Chemical Korea Co., Ltd.) ;
  • Ryu, Hoon (Samyang Genex Corporation) ;
  • Cho, Ur-Ryong (Department of Applied Chemical Engineering, Korea Institute of Technology and Education)
  • 황주호 (입시화학(주)) ;
  • 류훈 (삼양제넥스 생명공학연구소) ;
  • 조을룡 (한국기술교육대학교 응용화학공학과)
  • Published : 2008.12.31

Abstract

Starch as matrix polymer was used to do graft copolymerization with 2-ethylhexylacrylate, methyl methacrylate and acrylic acid. The polymerization was carried out by radical emulsion polymerization with increasing contents of starch. When 0.174% of $\alpha$-amylase as enzyme for starch was added, it was found that it made the best stable emulsion. The glass transion temperature of the polymerized material was increased with starch contents. The particle size and viscosity of the emulsion increased with starch contents due to the increased hydroxy group. Peel strength also increased with contents of starch because the enhanced hydroxy group caused to increase affinity between substrate surface and polymer materials. However, the initial tackiness decreased with starch contents owing to film hardness by higher glass transion temperature.

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