Abstract
Miscibility in blends of two statistical copolymers of the type (A x B 1− x ) and (C y D 1− y ), namely poly(styrene- co-acrylonitrile) and poly( N-phenyl rmitaconimide- co-methyl methacrylate), has been studied using differential scanning calorimetry. Miscible blends of these copolymers were obtained over a wide composition range. Theoretical ‘miscibility maps’, i.e. miscibility boundaries as a function of copolymer composition, have been calculated for this system by a predictive mean-field treatment involving the six segmental interaction parameters ( χ ij ). Excellent agreement between the predicted maps and experimental data is shown.
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