Quasi-Chemical approximation for nonrandomness in the hole theory of polymer systems comprising random copolymers

Hankun Xie, E.L.F. Nies

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

A modified version of Simha–Somcynsky’s hole theory developed earlier is adapted to obtain the equation of state and Helmholtz free energy for random copolymer systems and random copolymer/homopolymer blends. Miscibility behavior of the blend of poly(styrene-co-p-bromostyrene)/polystyrene is investigated to test the validity of the theory. With the molecular parameters extracted from the experimental PVT data, not only a satisfactory description of the experimental PVT surfaces is obtained, but also the upper critical miscibility behavior of the blend is predicted, which is in agreement with the experiment.
Original languageEnglish
Pages (from-to)213-218
Number of pages6
JournalPolymer Journal
Volume31
Issue number3
DOIs
Publication statusPublished - 1999

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