Bao, Xujin Edirisinghe, Mohan J. Fernando, Gerard F. Folkes, Michael J. Precursors for silicon carbide synthesised from dichloromethylsilane derivatives Several polysilanes, including two groups of copolymers and a group of ter-polymers, with overall functionalities ranging between 2 and 3 were prepared using the alkali metal dechlorination reaction. The yields of the soluble solid fractions of these polymers (the potential ceramic precursor) were in the range 40–70% wt and decreased with increasing overall functionalities in both cases of co- and terpolymers. The molecular weights and FT-IR spectra of the precursors have been determined and the ceramic in the residue after pyrolysis has been identified as silicon carbide. The pyrolytic yield can be increased by using a polymeric precursor of higher overall functionality. The reasons for this are discussed with reference to pyrolysis mechanisms. In particular, some of the ter-polymeric precursors synthesised with a high yield also give a high yield on pyrolysis due to the presence of branched structures and potential cross-linking sites. Polysilanes;Materials Engineering not elsewhere classified 2016-09-14
    https://repository.lboro.ac.uk/articles/journal_contribution/Precursors_for_silicon_carbide_synthesised_from_dichloromethylsilane_derivatives/9237113