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

Nanostructures in Cross-linked Epoxy Polymers and their Influence on Mechanical Properties

“…This supposes nanoclusters' (nanostructures') small relative fraction ϕ cl [2,3] and since these nanoclusters have arbitrary orientation, ε e increase rapidly results in their decay, which defines loosely-packed matrix mechanical devitrification at ε e > 0.36. Devitrificated loosely-packed matrix gives insignificant contribution in E [11], equal practically to zero, which results in sharp (discrete) elasticity modulus decrease. Besides, at T > ' g T ϕ cl rapid decay is observed, i.e.…”