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A novel imidazole derivative curing agent for epoxy resin: Synthesis, characterization, and cure kinetic
Author(s) -
Fang Wang,
Jun Xiao,
JingWen Wang,
ShuQin Li
Publication year - 2007
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.27053
Subject(s) - epoxy , autocatalysis , diglycidyl ether , curing (chemistry) , materials science , bisphenol a , differential scanning calorimetry , imidazole , thermal analysis , ether , polymer chemistry , composite material , chemistry , thermal , organic chemistry , catalysis , thermodynamics , physics
A novel imidazole derivative (named as EMI‐ g ‐BGE) was synthesized through the reaction of 2‐ethyl‐4‐methyl imidazole (EMI) and butyl glycidyl ether (BGE) and characterized by elemental analysis, FTIR spectroscopy, and 1 H NMR spectroscopy. The curing kinetic of diglycidyl ether of bisphenol A (DGEBA) epoxy resin with EMI‐ g ‐BGE as curing agent was studied by nonisothermal DSC technique at different heating rates. Dynamic DSC scans indicated that EMI‐ g ‐BGE was an effective curing agent of epoxy resin. The apparent activation energy E a was 71.8 kJ mol −1 calculated through Kissinger method, and the kinetic parameters were determined by Málek method for the kinetic analysis of the thermal treatment obtained by DSC measurement. A two‐parameter ( m , n ) autocatalytic model (Šesták‐Berggren equation) was found to be the most adequate selected kinetic model. In addition, the predicted curves from the kinetic model fit well with the nonisothermal DSC thermogram. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008