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Kinetics and simulation of the imidization of poly(styrene‐ co ‐maleic anhydride) with amines
Author(s) -
Liu HeYang,
Cao Kun,
Huang Yuan,
Yao Zhen,
Li BoGeng,
Hu GuoHua
Publication year - 2006
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.23371
Subject(s) - maleic anhydride , maleimide , polymer chemistry , imide , kinetics , styrene , tetrahydrofuran , aniline , ethylbenzene , amine gas treating , materials science , amide , chemistry , reaction mechanism , titration , copolymer , organic chemistry , catalysis , polymer , solvent , physics , quantum mechanics
The imidization of poly(styrene‐ co ‐maleic anhydride) with amines may improve some of its end‐use properties. The objective of this study was to examine the mechanism and kinetics with aniline (ANL) as an amine of the preparation of poly(styrene‐ co ‐ N ‐phenyl maleimide). The reaction was carried out in a tetrahydrofuran solution at 25–55°C and in an ethylbenzene solution at 85–120°C. The extent of the reaction was determined by conductance titration, a new and simple method. Two consecutive reactions were involved in the imidization: ring opening to produce an acido‐amide group and ring closing to form a corresponding imide group. The imidization rate was greatly influenced by the reaction temperature and the molar ratio of ANL to the anhydride. A model for the imidization kinetics over a wide range of reaction temperatures and concentration ranges was developed and validated. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 2744–2749, 2006