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Kinetic and thermodynamic studies of an epoxy system diglycidyl ether of bisphenol A/1, 2 diamine cyclohexane/calcium carbonate filler
Author(s) -
Núñez Lisardo,
Fraga F.,
Castro A.,
Núñez M. R.,
Villanueva M.
Publication year - 2000
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(20000110)75:2<291::aid-app12>3.0.co;2-a
Subject(s) - diglycidyl ether , epoxy , differential scanning calorimetry , curing (chemistry) , bisphenol a , materials science , cyclohexane , enthalpy , calcium carbonate , scanning electron microscope , polymer chemistry , diamine , composite material , chemical engineering , chemistry , organic chemistry , thermodynamics , physics , engineering
The curing reaction of an epoxy system consisting of a diglycidyl ether of bisphenol A (BADGE n = 0) and 1,2‐diaminecyclohexane (DCH) with a calcium carbonate filler was studied by differential scanning calorimetry (DSC) and using a scanning electronic microscope (SEM). As a first stage, the optimum content of the filler determined was 20%. From a kinetic study, in which two models were used, parameters such as reaction orders, rate constants, and activation energies were determined. A thermodynamic study allowed calculation of enthalpy (Δ H # ), entropy (Δ S # ), and free‐energy ((Δ G # ) changes. The results were compared to those obtained for the same epoxy systems without the filler. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 291–305, 2000