Synthesis of Polysilane Polymer Precursors and their ‎Pyrolysis to Silicon Carbides

2043's picture
Journal Title, Volume, Page: 
European Polymer Journal Volume 28, Issue 3, Pages 315–320
Year of Publication: 
1992
Authors: 
Maher A. Abu-eid
Department of Chemistry, University of Georgia, Athens, GA 30602, U.S.A.
Current Affiliation: 
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
R. Bruce King
Department of Chemistry, University of Georgia, Athens, GA 30602, U.S.A.
Abraham M. Kotliar
Department of Chemistry, University of Georgia, Athens, GA 30602, U.S.A.
Preferred Abstract (Original): 

Organosilane polymers of the type [R1 R2Si]n were prepared by dechlorination of R1 R2SiCl2 (R1 = CH3; R2 = H, C2H5, C3H7, C4H9, C6H11, C8H17 or C6H5) with sodium in toluene as solvent. The polymers were characterized by i.r., NMR and thermal analysis. The decomposition temperature, yield, solubility, appearance were found to depend strongly on molecular structure. The pyrolysis of polymethylsilane was found to give a 60% ceramic yield after thermal processing at 750°, suggesting its potential for use as a precursor to SiC ceramics.