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 language | English |
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Pages (from-to) | 5287-5290 |
Number of pages | 4 |
Journal | Macromolecules |
Volume | 25 |
Issue number | 20 |
Publication status | Published - 1992 |