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Equilibrium of one‐pot polymerization of polyimide
Author(s) -
Inoue Hiroshi,
Sasaki Yoshikazu,
Ogawa Toshio
Publication year - 1996
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/(sici)1097-4628(19960411)60:2<201::aid-app7>3.0.co;2-w
Subject(s) - polyimide , polymerization , polymer chemistry , exothermic reaction , bpda , materials science , biphenyl , chemistry , polymer , organic chemistry , composite material , layer (electronics)
One‐pot polymerization of polyimide from 3,3′,4,4′‐biphenyl tetracarboxylic dianhydride (BPDA) and 4,4′‐oxydianiline (ODA) was examined. The equilibrium in the polyimide with water was examined in detail in p ‐chlorophenol solution during the polymerization. The equilibrium constant was expressed by log K = 1.50 + 1433 (1/ T ). The polymerization reaction is exothermic. The molecular weight increased with decrease of temperature. © 1996 John Wiley & Sons, Inc.