Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Preparation of Waterborne Polyurethane/Silica Nanocomposites Using Tetraethylorthosilicate

Tetraethylorthosilicate를 사용한 수분산 폴리우레탄/실리카 Nanocomposite의 제조

  • Shin, Yong Tak (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Hong, Min Gi (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)
  • 신용탁 (건양대학교 화공생명학과) ;
  • 홍민기 (건양대학교 화공생명학과) ;
  • 최진주 (건양대학교 화공생명학과) ;
  • 이원기 (한진화학주식회사 기술연구소) ;
  • 이경배 (한진화학주식회사 기술연구소) ;
  • 유병원 (한진화학주식회사 기술연구소) ;
  • 이명구 (나노스피어(주)) ;
  • 송기창 (건양대학교 화공생명학과)
  • Received : 2010.03.20
  • Accepted : 2010.04.14
  • Published : 2010.08.31
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Abstract

Waterborne polyurethane(WPU) was synthesized from isophorone diisocyanate(IPDI), poly(tetramethylene glycol)(PTMG), dimethylol propionic acid(DMPA), triethylamine(TEA), ethylenediamine(EDA) and 3-aminopropyl triethoxysilane(APS) as a coupling agent. Subsequently, WPU/silica nanocomposites with different silica contents(0 to 8 wt%) were prepared by performing sol-gel reactions with tetraethylorthosilicate in the WPU matrix. The average particle size of the nanocomposite solutions increased with increasing TEOS content. Also, the prepared nanocomposites showed better thermal stability than pure WPU.

Isophorone diisocyanate(IPDI), poly(tetramethylene glycol)(PTMG), dimethylol propionic acid(DMPA), triethylamine(TEA), ethylenediamine(EDA), 3-aminopropyl triethoxysilane(APS)을 출발물질로 하여 수분산 폴리우레탄(Waterborne polyurethane, WPU)이 합성되었다. 이 WPU에 0~8 wt%로 첨가량이 조절된 tetraethylorthosilicate(TEOS)를 첨가한 후 Sol-Gel 반응을 진행시켜 WPU/silica nanocomposite를 제조하였다. WPU/silica nanocomposite의 평균 입경은 TEOS의 첨가량이 증가함에 따라 증가하였다. 또한 제조된 nanocomposite의 열적 안정성은 순수한 WPU보다 우수하였다.

Keywords

Acknowledgement

Supported by : 지식경제부

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