Medda, Samar Kumar and Kundu, Debtosh and De, Goutam (2003) Inorganic-organic hybrid coatings on polycarbonate. Spectroscopic studies on the simultaneous polymerizations of methacrylate and silica networks. Journal of Non-Crystalline Solids, 318 (1-2). pp. 149-156. ISSN 0022-3093

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Hybrid methacrylate-silica coatings derived from 3-(methacryloxypropyl)-trimethoxy silane were deposited on polycarbonate via hydrolysis-condensation reactions followed by UV curing (lambda = 253.7 nm). The formation of -Si-O-Si- (inorganic backbone) and polymethacrylate (organic) networks leading to the generation of hybrid structure was monitored by UV and Fourier transform infrared (FTIR) spectroscopies. UV and FTIR spectra showed complete polymerization of methacrylate groups during UV curing of the coatings. The silica network was initially formed through the hydrolysis-condensation reactions of alkoxy groups in the sol as evident from the appearance of FTIR peaks due to -Si-O-Si- vibrations. Further silanol (Si-OH) condensation reactions leading to the generation of more silica network were occurred simultaneously with methacrylate polymerization during UV photo curing of the coating. (C) 2002 Elsevier Science B.V. All rights reserved.

Item Type: Article
Subjects: Microstructure and Characterization
Divisions: Sol Gel
Depositing User: Subhra Lahiri
Date Deposited: 23 Feb 2012 13:04
Last Modified: 23 Feb 2012 13:04

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