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Preparation of polyimide powder
Author(s) -
Inoue Hiroshi,
Muramatu Tadao,
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(19960808)61:6<929::aid-app6>3.0.co;2-j
Subject(s) - polyimide , bpda , crystallinity , materials science , biphenyl , polymer chemistry , solid state , chemical engineering , composite material , chemistry , organic chemistry , layer (electronics) , engineering
A polyimide powder was prepared from 3,3′,4,4′‐biphenyl tetracarboxylic dianhydride (BPDA) and 4,4′‐oxydianiline (ODA). Polyimide powder having low molecular weight was prepared by imidizing low‐molecular‐weight polyamic acid. The molecular weight of this polyimide powder increased on heating in a solid state. The molecular weight increased with the decrease of crystallinity of polyimide. © 1996 John Wiley & Sons, Inc.