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Kinetics of the enthalpy relaxation process for an epoxy network as determined with a peak shift model
Author(s) -
Fraga F.,
CastroDíaz C.,
RodríguezNúñez E.,
MartínezAgeitos J. M.
Publication year - 2005
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.22377
Subject(s) - diglycidyl ether , enthalpy , differential scanning calorimetry , thermodynamics , epoxy , relaxation (psychology) , materials science , kinetics , gibbs free energy , activation energy , heat capacity , configuration entropy , chemistry , bisphenol a , polymer chemistry , composite material , physics , psychology , social psychology , quantum mechanics
The relaxation kinetics of the epoxy network diglycidyl ether of bisphenol A ( n = 0) and m ‐xylylenediamine were studied with differential scanning calorimetry experimental data with a shift peak model. Nonlinear parameters were calculated with aging experiments. The nonexponential parameter and the apparent activation energy were found from intrinsic cycles. Adam–Gibbs theory was used to provide a molecular interpretation based on the enthalpy relaxation. Different assumptions of the variation of specific heat capacity ( c p ) were used to determine the macroscopic molar configurational entropy of the system. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 2003–2008, 2005
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