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Infrared Spectroscopic Study of SiOx Film Formation and Decomposition of Vinyl Silane Derivative by Heat Treatment. I. On KBr and Gold Surface

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Authors

Kim, Hyuncheol; Jang, Jyongsik

Issue Date
1997
Publisher
Wiley-Blackwell
Citation
Journal of Applied Polymer Science, 68, 775–784
Keywords
poly(VI-co-VTS)thermooxidative degradationamorphous SiOx film
Abstract
The free-radical copolymerization of vinyltrimethoxysilane (VTS) with vinylimidazole
(VI) was carried out in benzene at 687C. Thermooxidative degradation
and the SiOx film-formation mechanism of poly(VI-co-VTS) both on gold and KBr were
studied with Fourier transform infrared (FTIR) spectroscopy. Reflection-absorption (RA)
spectra on gold were compared with transmission spectra on KBr. In the initial
stage of heat treatment, the Si{O{Si bond formation was caused mainly by the
residual water in the copolymer film. As heating time increased, however, both the
water resulting from the thermal decomposition of the copolymer and the water vapor
in air began to participate in the hydrolysis of the Si{O{CH3 group followed by the
condensation reaction. The structure of the SiOx film became closer to the structure of
SiO2 with increasing heating temperature. In addition, the differences between the
transmission spectra and R-A spectra were observed at the peaks related to Si{O{Si
stretching due to the optical effect.
ISSN
0021-8995
Language
English
URI
https://hdl.handle.net/10371/61970
DOI
https://doi.org/10.1002/(SICI)1097-4628(19980502)68:5<775::AID-APP9>3.0.CO;2-L
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