Preparation of Silylated Waterborne Polyurethane/Silica Nanocomposites Using Colloidal Silica

Colloidal Silica를 이용한 Silylated Waterborne Polyurethane/Silica Nanocomposite의 제조

  • Hong, Min Gi (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Shin, Yong Tak (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Choi, Jin Joo (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Lee, Won Ki (Technical Research Institute, Hanjin Chemical Co., LTD) ;
  • Lee, Gyoung Bae (Technical Research Institute, Hanjin Chemical Co., LTD) ;
  • Yoo, Byung Won (Technical Research Institute, Hanjin Chemical Co., LTD) ;
  • Lee, Myung Goo (Nanosphere Co., LTD) ;
  • Song, Ki Chang (Department of Chemical and Biochemical Engineering, Konyang University)
  • 홍민기 (건양대학교 화공생명학과) ;
  • 신용탁 (건양대학교 화공생명학과) ;
  • 최진주 (건양대학교 화공생명학과) ;
  • 이원기 (한진화학 주식회사 기술연구소) ;
  • 이경배 (한진화학 주식회사 기술연구소) ;
  • 유병원 (한진화학 주식회사 기술연구소) ;
  • 이명구 (나노스피어(주)) ;
  • 송기창 (건양대학교 화공생명학과)
  • Received : 2010.04.09
  • Accepted : 2010.04.29
  • Published : 2010.10.31

Abstract

Silylated waterborne polyurethane was synthesized by capping the NCO groups of polyurethane prepolymer, prepared from isophrone diisocyanate, poly(tetramethylene glycol) and dimethylol propionic acid, with aminopropyl triethoxysilane. Subsequently, it was mixed with colloidal silica to prepare silylated waterborne polyurethane/silica nanocomposites. The average sizes of nanocomposite particles, measured by dynamic light scattering, showed almost the same value, irrespective of increasing silica content. However, the prepared nanocomposites showed better thermal stability than pure waterborne polyurethane.

Acknowledgement

Supported by : 지식경제부