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Synthesis and thermally induced ceramisation of a non-oxidic poly(methylsilsesquicarbodiimide) gel

Gabriel, Andreas O. ; Riedel, Ralf ; Storck, Sebastian ; Maier, Wilhelm F. (1997)
Synthesis and thermally induced ceramisation of a non-oxidic poly(methylsilsesquicarbodiimide) gel.
In: Applied organometallic chemistry, 11 (10-11)
doi: 10.1002/(SICI)1099-0739(199710/11)11:10/11<833::AID-AOC643>3.0.CO;2-S
Article, Bibliographie

Abstract

A novel polymeric organosilicon gel with the composition [MeSi(NCN)(1.5)](n) synthesized by the reaction of MeSiCl3 with Me3Si-N=C=N-SiMe3 is reported. The reaction is performed without any solvent and with catalytic amounts of pyridine and provides highly cross-linked poly(methylsilsesquicarbodiimide) in the form of a stable non-oxidic gel with unusual low open porosity (< 1 m(2) g(-1)). The Si-C-N gel transforms to an amorphous silicon carbonitride ceramic, SiC1.1N1.6, by the thermally induced ceramization at 1200 degrees C in inert atmosphere (argon), The gel-derived silicon carbonitride is thermally stable up to 1450 degrees C, The synthesis, characterization and pyrolysis behavior of the new polyorganosilicon gel is discussed.

Item Type: Article
Erschienen: 1997
Creators: Gabriel, Andreas O. ; Riedel, Ralf ; Storck, Sebastian ; Maier, Wilhelm F.
Type of entry: Bibliographie
Title: Synthesis and thermally induced ceramisation of a non-oxidic poly(methylsilsesquicarbodiimide) gel
Language: English
Date: 1 October 1997
Publisher: Wiley & Sons Ltd.
Journal or Publication Title: Applied organometallic chemistry
Volume of the journal: 11
Issue Number: 10-11
DOI: 10.1002/(SICI)1099-0739(199710/11)11:10/11<833::AID-AOC643>3.0.CO;2-S
Abstract:

A novel polymeric organosilicon gel with the composition [MeSi(NCN)(1.5)](n) synthesized by the reaction of MeSiCl3 with Me3Si-N=C=N-SiMe3 is reported. The reaction is performed without any solvent and with catalytic amounts of pyridine and provides highly cross-linked poly(methylsilsesquicarbodiimide) in the form of a stable non-oxidic gel with unusual low open porosity (< 1 m(2) g(-1)). The Si-C-N gel transforms to an amorphous silicon carbonitride ceramic, SiC1.1N1.6, by the thermally induced ceramization at 1200 degrees C in inert atmosphere (argon), The gel-derived silicon carbonitride is thermally stable up to 1450 degrees C, The synthesis, characterization and pyrolysis behavior of the new polyorganosilicon gel is discussed.

Uncontrolled Keywords: ilylcarbodi-imide, bis(trimethylsilyl)carbodi-imide, poly(methylsilsesquicarbodi-imide), sol-gel, pyrolysis, thermal analysis, mass spectra, silicon carbonitride, argon physisorption, high-resolution transmission electron microscopy (HR TEM), SILICON OXYCARBIDE GLASSES, CHEMISTRY
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
11 Department of Materials and Earth Sciences > Department of Earth Sciences (1999 merged into Department of Materials and Earth Sciences)
Date Deposited: 19 Nov 2008 15:55
Last Modified: 09 Mar 2023 09:54
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