Correlation of radiation stability of composites based on block copolymers with the volume fraction of interlayer

Size of domains, their separation, and the fraction of the interfacial layer have been studied in the context of the radiation chemical yield G of paramagnetic centres at 77 K in composites based on poly(styrene-butadiene)block copolymers of various composition and molecular weight. The results show that the deviations of the radiation chemical yield from the additivity rule are due to the effect of the interfacial layer responsible for the transfer of energy between the components.