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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 20, 2010
Accepted April 14, 2010

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Tetraethylorthosilicate를 사용한 수분산 폴리우레탄/실리카 Nanocomposite의 제조

Preparation of Waterborne Polyurethane/Silica Nanocomposites Using Tetraethylorthosilicate

신용탁 홍민기 최진주 이원기¹ 이경배¹ 유병원¹ 이명구² 송기창^†

Yong Tak Shin Min Gi Hong Jin Joo Choi Won Ki Lee¹ Gyoung Bae Lee¹ Byung Won Yoo¹ Myung Goo Lee² Ki Chang Song^†

건양대학교 화공생명학과, 320-711 충남 논산시 내동 26 ¹한진화학주식회사 기술연구소, 437-801 경기도 의왕시 고천동 333 ²나노스피어(주), 445-872 경기도 화성시 송산면 중송리 95-3

Department of Chemical and Biochemical Engineering, Konyang University, 26 Nae-dong, Nonsan-si, Chungnam 320-711, Korea ¹Technical Research Institute, Hanjin Chemical Co., LTD, 333 Gocheon-dong, Uiwang-si, Gyeonggi 437-801, Korea ²Nanosphere Co., LTD, 95-3 Jongsong-ri, Sonsan-myeon, Hwaseong-si, Gyeonggi 445-872, Korea

Korean Chemical Engineering Research, August 2010, 48(4), 428-433(6), NONE Epub 8 September 2010

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Abstract

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.

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.

Keywords

Waterborne Polyurethane Aminopropyl Triethoxysilane Nanocomposites Tetraethylorthosilicate Sol-Gel

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