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Blends of imidized acrylic polymers with SAN copolymers and with PVC
Author(s) -
Fowler M. E.,
Paul D. R.,
Cohen L. A.,
Freed W. T.
Publication year - 1989
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1989.070370217
Subject(s) - miscibility , copolymer , materials science , differential scanning calorimetry , acrylonitrile , vinyl chloride , methyl methacrylate , polymer chemistry , acrylic acid , polyvinyl chloride , styrene , polymer , glass transition , composite material , thermodynamics , physics
A series of imidized acrylic polymers of varying structural composition generated by reaction of methylamine with poly(methyl methacrylate) were blended with a range of styrene/acrylonitrile or SAN copolymers (0–33% AN) and with poly(vinyl chloride). On the basis of glass transition behavior determined by differential scanning calorimetry, some but not all imidized acrylic structures were found to be miscible with PVC and with SAN copolymers within a limited window of AN levels. Acid functionality in the imidized acrylics appears to hinder their miscibility with SAN rather significantly and with PVC to a lesser extent. Miscible SAN blends showed lower critical solution temperature behavior whereas miscible blends with PVC did not up to the highest attainable temperatures. The composition factors that influence the phase behavior are described and interpreted in terms of possible mechanisms.