Preparation of Silica/Polyurethane Nanocomposites by UV-Induced Polymerization from Surfaces of Silica

被引：18

作者：

Tan, Hailin ^{[1
]}

Yang, Dongzhi ^{[1
]}

Xiao, Ming ^{[1
]}

Han, Jing ^{[1
]}

Nie, Jun ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Coll Mat Sci & Engn, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2009年 / 111卷 / 04期

关键词：

photopolymerization; nanocomposites; nanosilica; UV-curing; SOL-GEL; PHOTOPOLYMERIZATION; COATINGS; FILMS;

D O I：

10.1002/app.28700

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理];

摘要：

UV-Curable nanocomposites were prepared by the in situ photopolymerizaton with nanosilica obtained from sol-gel process. The photoinitiator 2-hydroxy-2-methyl-1-phenylpropane-1-one (1173) was anchored onto the surface of the nanosilica with or without methacryloxypropyltrimethoxysilane (MAPS) modification. The photopolymerization kinetics was studied by real-time Fourier transform IR (RTIR), and the microstructure and properties of the nanocomposite were investigated Using transmission electron microscopy and UV-visible (UV-vis) transmistance spectra. RTIR analysis indicated that the nanocomposites without MAPS had higher curing rates and final conversion than those with MAPS. The nanocomposite,; with an uniformal dispersion of nanosilica had high UV-vis transmittance. (c) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 1936-1941, 2009

引用

页码：1936 / 1941

页数：6

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