Abstract
Polycondensed polyblock copolymers have been studied, the macromolecules of which are formed from thermodynamically incompatible arylate and butadiene blocks. This results in microseparation of the block copolymer (BCP) which results not in averaging of the properties of the homopolymers but in combination of different properties of the blocks. The phase segregation affects the process of thermal degradation of the block copolymers which is characterized by 2 intervals of intensive decay. It was shown that phase inversion occurs at a 30% polybutadiene block content. The thermodynamic incompatibility of the blocks of the polymer systems being studied results in the formation of a defective transitional layer at the phase separation boundary where phase inversion can also occur.
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