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Modification of DGEBA with diimide–diacids derived from bicyclo[2.2.2]oct‐7‐ene‐2,3,5,6‐tetracarboxylic dianhydride and crosslinking study
Author(s) -
Galià M.,
Monte D.,
Serra A.,
Mantecón A.,
Cádiz V.
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(19960620)60:12<2177::aid-app15>3.0.co;2-4
Subject(s) - ene reaction , diimide , bicyclic molecule , polymer chemistry , materials science , chemistry , organic chemistry , molecule , perylene
Epoxy resins derived from diimide–diacids obtained from bicyclo[2.2.2.]oct‐7‐en‐2,3,5,6‐tetracarboxylic dianhydride and diglycidyl ether of bisphenol A were synthesized and characterized by spectroscopic techniques and thermal analyses. A further crosslinking using hydroxylic groups using dianhydride or diisocyanate as a hardener was also carried out. These processes led to crosslinked materials, but a DSC study does not show a straightforward relationship between the amount of hardener used and reaction enthalpiies, which suggests a complicated reaction mechanism. On the other hand only a slight increase in T g values was observed during the curing process. No substantial differences between the thermal characteristics of linear and crosslinked polymers wer observed. © 1996 John Wiley & Sons, Inc.