CROSS-LINKING OF HYDROPOLYSILANES FOR USE AS SILICON-CARBIDE PRECURSORS

Authors
Citation
Yt. Shieh et Sp. Sawan, CROSS-LINKING OF HYDROPOLYSILANES FOR USE AS SILICON-CARBIDE PRECURSORS, European Polymer Journal, 32(5), 1996, pp. 625-630
Citations number
33
Categorie Soggetti
Polymer Sciences
Journal title
ISSN journal
00143057
Volume
32
Issue
5
Year of publication
1996
Pages
625 - 630
Database
ISI
SICI code
0014-3057(1996)32:5<625:COHFUA>2.0.ZU;2-N
Abstract
Cross-linking reactions of hydropolysilanes with alkyl halides as cros s-linking agents were evaluated in order to obtain high yields of oxyg en-free silicon carbide ceramics. On the basis of data from infrared s pectroscopy, thermogravimetry, solubility, gel permeation chromatograp hy, and ultraviolet spectroscopy, it has been found that the cross-lin king reactions of the polymer occurred to varied extents depending on the type of alkyl halides used. The reactivities of alkyl halides to h ydropolysilanes were found to be dependent on the type of halogen, the number of halogen atoms attached to the same carbon atom, the size of the alkyl group, and the reaction temperature.