A Study on Synthesis of Starch-acryl Pressure Sensitive Adhesive by Soap-free Emulsion Polymerization

무유화제 유화중합에 의한 전분-아크릴 점착제의 합성에 관한 연구

  • Song, Su-Hyun (Department of Appied Chemical Engineering, Korea Institute of Technology and Education) ;
  • Kim, Young-Seok (Samyang Group, Food R&D Center) ;
  • Cho, Ur-Ryong (Department of Appied Chemical Engineering, Korea Institute of Technology and Education)
  • 송수현 (한국기술교육대학교 응용화학공학과) ;
  • 김영석 (삼양그룹 식품연구소) ;
  • 조을룡 (한국기술교육대학교 응용화학공학과)
  • Published : 2009.12.31

Abstract

The pressure sensitive adhesives (PSA) were synthesized by soap-free emulsion polymerization of acrylic monomers such as butyl acrylate, 2-ethyl hexyl acrylate, and acrylic acid in the presence of starch as a protective colloid and copolymer. The peel strength and holding power of PSA were increased with starch contents due to the enhancement of gel content, But the initial tackiness of PSA was decreased with starch contents. The contact angle analysis of PSA indicated that the wettability was increased with starch contents owing to the increase of polarity by hydroxy group in starch. In the pH measurement of emulsion with time for biodegradability, the starch in the PSA accelerated the lowering of pH due to the formation of organic acids followed by decomposition of starch.

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