Abstract
The reaction of heterofunctional condensation of 1,7-dihydroxy-1,7-dimethyloctaphe-nylcyclohexasiloxane with 1,4-bis(dimethylchlorsilyl)benzene in the presence of pyridin with 1:0.95 and 1:1 ratio of initial components have been investigated and α,ω-dihydroxysilarylencyclohexasiloxane oligomers have been obtained. On the basis of synthesized oligomers the corresponding block-copolymers were obtained by the reaction of heterofunctional condensation with α,ω-dichlordimethylsiloxanes. Ther-momechanical, thermogravimetric and X-ray studies of block-copolymers show that their properties are determined by a ratio of the lengths of flexible linear dimethyl-siloxane and rigid silarylen-chclohexasiloxane fragments in the chain. When the lengths of the linear dimethylsiloxane fragments have definite values, the microheterogeneous structure is observed in synthesized block-copolymers.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
