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Variations of the glass‐transition temperature in the imidization of poly(styrene‐ co ‐maleic anhydride)
Author(s) -
Liu HeYang,
Cao Kun,
Yao Zhen,
Li BoGeng,
Hu GuoHua
Publication year - 2007
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.25917
Subject(s) - maleic anhydride , copolymer , styrene , maleimide , differential scanning calorimetry , polymer chemistry , glass transition , materials science , maleic acid , composite material , polymer , thermodynamics , physics
The imidization of poly(styrene‐ co ‐maleic anhydride) (SMA) was conducted, and the glass‐transition temperatures ( T g 's) of the resulting products were measured with differential scanning calorimetry. The contributions from functional groups of maleic anhydride, N ‐phenylmaleamic acid, and N ‐phenylmaleimide to T g were examined. T g increased in the order of SMA < styrene– N ‐phenyl maleimide copolymer < styrene– N ‐phenyl maleamic acid copolymer and followed the Fox equation. T g of the imidized products of SMA could be controlled by the conversions of both ring‐opening and ring‐closing reactions. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 2418–2422, 2007
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