Conversion process of chlorine containing polysilanes into silicon carbide: Part I Synthesis and crosslinking of poly(chloromethyl)silanes–carbosilanes and their transformation into inorganic amorphous silicon carbide |
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| Authors: | H-P MARTIN E MULLER R RICHTER G ROEWER E BRENDLER |
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| Affiliation: | (1) Institutes of Ceramic Materials, 09596 Freiberg, Germany;(2) Institutes of Inorganic Chemistry, 09596 Freiberg, Germany;(3) Institutes of Analytical Chemistry, Freiberg University of Mining and Technology, 09596 Freiberg, Germany |
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| Abstract: | Synthesis of chlorine containing polysilanes by catalytic redistribution is described and the obtained polymers are characterized
by infrared (IR)-, magic angle spinning nuclear magnetic resonance (MAS-NMR)-spectroscopy and elemental analysis. The pyrolysis
of such polysilanes was investigated by thermoanalysis, IR-, MAS NMR- and electron spin resonance (ESR)-spectroscopy. The
conversion process from polysilane into polycarbosilane is described in terms of the results of the performed investigations
and a model of the process is developed. Differences between this conversion process and those for chlorine free polysilanes
or polycarbosilanes previously described by other authors are discussed.
This revised version was published online in November 2006 with corrections to the Cover Date. |
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