期刊
POLYMER
卷 46, 期 25, 页码 11241-11246出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2005.09.062
关键词
hybrid nanocomposites; cationic photopolymerization; sol-gel process
Organic-inorganic nanocomposite hybrid coatings were prepared through a dual-cure process involving cationic photopolymerization of epoxy groups and subsequent condensation of alkoxysilane The kinetics of the photopolymerization and condensation reactions were investigated; Suitable conditions for obtaining a complete conversion of both reactive groups were found. The obtained films, are transparent to visible light. The T-g values of the hybrids increase by increasing the TEOS content in the photocurable formulation. Also, a significant increase in surface hardness could be obtained for the hybrid system.. AFM analysis gave evidence of a strong interaction between the organic and inorganic phase with the formation of silica domains ill the nanoscale range. (c) 2005 Elsevier Ltd. All rights reserved.
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