Stress-strain curves of glassy poly(arylate sulphone) described in terms of rubber elasticity

Abstract

Stress-strain curves of films prepared by casting polyblock poly(arylene sulphone) from various solvents and measured between 293 and 443 K have been interpreted on the basis of equations developed for describing rubber elasticity. The concept of molecular entanglements allows one to describe practically the whole course of the stress-strain curve of the polymer in the glassy state and to explain the effect of solvent on its fundamental mechanical characteristics.