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Cure kinetics of diglycidylether of bisphenol A– ethylenediamine revisited using a mechanistic model
Author(s) -
Riccardi C. C.,
Fraga F.,
Dupuy J.,
Williams R. J. J.
Publication year - 2001
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.2080
Subject(s) - epoxy , bisphenol a , ethylenediamine , kinetics , polymer chemistry , isothermal process , chemistry , reaction rate constant , reaction mechanism , monomer , materials science , thermodynamics , organic chemistry , polymer , catalysis , physics , quantum mechanics
The polymerization kinetics of the reaction between diglycidylether of bisphenol A (DGEBA) and ethylenediamine (EDA) was analyzed, using dynamic scanning calorimetry, in both isothermal and programmed heating‐rate modes. A simple mechanistic model, consisting of an equilibrium reaction generating an epoxy–hydroxyl complex, and including two possible mechanisms for the consumption of amine hydrogens [(1) with free epoxy groups, (2) with the epoxy–hydroxyl complex], provided a reasonable fitting of the whole set of experimental results. It was found that the equilibrium constant decreased with temperature, making less important the reaction mechanism involving the epoxy–hydroxyl complex. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 2319–2325, 2001