Elsevier

Polymer

Volume 35, Issue 2, 1994, Pages 353-359
Polymer

Polymer paper
Phase separation from solutions of poly(ether sulfone) in epoxy resins

https://doi.org/10.1016/0032-3861(94)90703-XGet rights and content

Abstract

Cloud-point measurements were made on quasi-binary mixtures of diglycidyl ether of bisphenol A (DGEBA) epoxy resin with poly(ether sulfone) (PES). The relative molecular masses of both resin and polymer were varied, and temperature-dependent Flory-Huggins interaction parameters were estimated on the assumption that both components are monodisperse. The data were used to calculate lower critical solution temperatures (LCST) and compositions, and to construct coexistence curves. The evolution of two-phase morphology during curing of epoxy-PES blends containing 4,4′-diaminodiphenylmethane (DDM) hardener is related to these results.

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Present address: Departmento Quimica-Fisica, University of Valencia, Doctor Moliner 50, Valencia, Spain

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