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Recoverable polyimides. (II): DSC studies of copolymers from 4, 4′‐dithiodianiline bismaleimide (DTDA‐BM) and aromatic diamines
Author(s) -
Wu Yulong,
Tesoro G. C.
Publication year - 1990
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1990.220010310
Subject(s) - differential scanning calorimetry , copolymer , materials science , thermosetting polymer , curing (chemistry) , polyimide , disulfide bond , polymer , polymer chemistry , yield (engineering) , diamine , toughening , composite material , chemistry , physics , layer (electronics) , thermodynamics , toughness , biochemistry
Interest in the recently reported polyimide resins containing disulfide bonds, which could be cleaved by reduction for reprocessing and/or recovery, prompted the present investigation of polymers and copolymers of the DTDA bismaleimide previously described. Differential scanning calorimetry (DSC) studies were carried out to identify the structures, curing conditions and modifications of reduced products of potential value for industrial applications. Results have shown that selected cured copolymers of DTDA bismaleimide with aromatic diamines can be solubilized by reduction and reset in subsequent reactions to yield thermosets of satisfactory properties.