Blends of poly(styrene-stat-acrylonitrile) and poly(butadiene-stat-acrylonitrile): A guide to the butadiene-acrylonitrile segmental interaction

J. M G Cowie, John H. Harris, Iain J. McEwen

Research output: Contribution to journalArticle

Abstract

A range of butadiene-acrylonitrile and of styrene-acrylonitrile statistical copolymers have been synthesized and blended to establish a value for the segmental interaction energy density between butadiene and acrylonitrile. Two series of blends were examined. In the first series, "internal" blends from butadiene-acrylonitrile copolymers of different composition were found to be miscible only when the compositions differed by less than about 4 vol %. In contrast, blends of butadiene-acrylonitrile copolymers with styrene-acrylonitrile copolymers formed a fairly extensive miscibility region which was analyzed by considering this to form part of a conic section in composition space. A value for the butadiene-acrylonitrile segmental interaction energy density BB-AN of 33-37 J cm-3 appropriately describes the phase behavior in this system. © 1992 American Chemical Society.

Original languageEnglish
Pages (from-to)5287-5290
Number of pages4
JournalMacromolecules
Volume25
Issue number20
Publication statusPublished - 1992

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