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Preparation of Waterborne Polyurethane/Silica Nanocomposites Using Tetraethylorthosilicate  

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)
Publication Information
Korean Chemical Engineering Research / v.48, no.4, 2010 , pp. 428-433 More about this Journal
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.
Keywords
Waterborne Polyurethane; Aminopropyl Triethoxysilane; Nanocomposites; Tetraethylorthosilicate; Sol-Gel;
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