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Addition polyimides. IV. Effect of structure on thermal characteristics
Author(s) -
Varma Indra K.,
Varma D. S.
Publication year - 1984
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.1984.070290911
Subject(s) - sulfone , phosphine oxide , thermogravimetric analysis , oxide , ether , curing (chemistry) , polymer chemistry , diamine , materials science , fluorene , thermal decomposition , chemistry , phosphine , organic chemistry , polymer , catalysis
Chain extension reaction of bis( m ‐maleimido phenyl) methyl phosphine oxide (BP) with 4,4′‐diaminodiphenylmethane (BP–M), 4,4′‐diaminodiphenyl ether (BP–E), 3,3′‐ and 4,4′‐diaminodiphenyl sulfone (BP–DDS m and (BP‐DDS m respectively), tris ( m ‐aminophenyl) phosphine oxide (BP–TAP), and 9,9‐bis( p ‐aminophenyl) fluorene (BP–BAF) was carried out by refluxing 1:0.3 molar solution of BP:diamine. The melting temperature and exothermic peak associated with curing of BP decreased by such chain extension. The thermogravimetric analysis indicated more than 60% residual weight at 800°C in nitrogen atmosphere in BP–DDS m , BP–DDS p , and BP–TAP resins. These resins can be processed at low temperature and can be used for fabrication of composites with improved properties.