Miscible blends of poly(styrene‐co‐allyl alcohol) with poly‐ϵ‐caprolactone

Abstract

SynopsisBased on the single, composition-dependent glass transition criterion, poly-6-caprolactone (PCL) was found to be miscible with each of four poly(styrene-co-ally1 alcohol) (SAA) copolymers with hydroxyl contents between 1.3 and 7.7 wt %. Melting point depression of the PCL in the blends was used to evaluate the blend interaction parameter B for each miscible system. The parameter B was found to be negative and to vary with copolymer composition in a way that suggests that an optimum density of alcohol moieties in the copolymer exists for achieving maximum interaction with PCL.

Miscibility and Crystallization of an Amine-Cured Epoxy Resin Modified with Crystalline Poly(ɛ-caprolactone)

“…This observation does not constitute a proof of immiscibility because several miscible systems containing crystallizable components have behaved in an identical manner providing the crystallization conditions are appropriate. [20,21] Moreover, the melting temperature, T m , of PCL in the blends decreases with increasing DGEBA content. This is the normal behavior in miscible crystallizable/amorphous blends.…”