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
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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