Abstract

Conditions of the synthesis of oligoorganocyclosiloxanes of the bead-like and polycyclic structure were studied. On the basis of synthesized oligomers the corresponding block copolymers were obtained by the reaction of heterofunctional condensation with α,ω-diamino(dichlor)diorganosiloxanes. Thermomechanical, thermogravimetric, Roentgenographic, and electronmicroscopic studies of block copolymers show that their properties are determined by a ratio of lengths of linear and polycyclic fragments in the chain. When the lengths of linear and polycyclic fragments have definite values, the microheterophase structure is observed in synthesized block copolymers.

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