During the initial stage of pyrolysis of polydimethylsilane

larger quanhties of gaseous and liquid products are produced. In this paper

it is proved that the gaseous product contains dimethylsilane and trimethylsilane

whereas liquid products is a future of linear or cyclic silane oligomers by IR and GC-MS analysis. Baed on the idenhfication and analysis to the composition and structure of these pyrolytic products

the pyrolytic process and mechanism of polydAnethysilane are discussed.