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Polyimides and polyamide–imides containing arylene sulfone ether linkages
Author(s) -
Idage S. B.,
Idage B. B.,
Gunjikar V. G.,
Vernekar S. P.
Publication year - 1990
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.1990.070400534
Subject(s) - arylene , thermogravimetric analysis , pyromellitic dianhydride , polyamide , polymer chemistry , differential scanning calorimetry , sulfone , ether , materials science , condensation polymer , chemistry , polyimide , polymer , organic chemistry , composite material , aryl , alkyl , physics , layer (electronics) , thermodynamics
Polyimides and polyamide–imides containing arylene sulfone ether linkages were synthesized from 4,4′‐bis(4‐isocyanatophenoxy) diphenylsufone (SPI), 4,4′‐bis(3‐isocyanatophenoxy) diphenylsulfone (SMI), pyromellitic dianhydride (PMDA), 3,3′,4,4′‐benzophenone tetracarboxylic dianhydride (BTDA), and trimellitic anhydride (TMA) using one‐step method. The diisocyanates SPI and SMI were synthesized from 4,4′‐bis (4‐carboxyphenoxy) diphenylsulfone (SPA) and 4,4′‐bis(3‐carboxyphenoxy) diphenylsulfone (SMA) by a Weinstock‐modified curtius rearrangement method. All the polycondensation reactions were carried out in N ‐methyl‐2‐pyrrolidone (NMP) and the polymers obtained were characterized by infrared spectroscopy, solution viscosity, elemental analysis, thermogravimetric analysis, differential scanning calorimetry, and X‐ray diffraction.