Premium
Characterization of the cure of TGDDM/DDS epoxy resins by chemiluminescence I. Spectral and thermal analysis
Author(s) -
George G. A.,
Schweinsberg D. P.
Publication year - 1987
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.1987.070330702
Subject(s) - epoxy , chemiluminescence , materials science , classification of discontinuities , kinetics , emission intensity , composite material , analytical chemistry (journal) , polymer chemistry , chemistry , organic chemistry , physics , photoluminescence , mathematics , optoelectronics , quantum mechanics , mathematical analysis
The emission of weak visible chemiluminescence (CL) during the cure of a tetraglycidyl 4,4′‐diaminodiphenyl methane (TGDDM)‐based epoxy resin, with three different concentrations of 4,4′‐diaminodiphenylsulfone (DDS) has been studied at 135°C. Spectral analysis indicates that the CL originates from trace oxidation of the TGDDM resin and the emission intensity is sensitive to the viscosity changes during cure. From thermal analysis data, sharp discontinuities in CL intensity are shown to occur at the gel point. The temperature dependence of CL from a cured resin also shows a sharp discontinuity at T g . These results indicate that CL provides a sensitive monitor of both the kinetics of gelation and the network formation in this epoxy resin.