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Oxidative skeleton breaking in epoxy–amine networks
Author(s) -
Bellenger V.,
Verdu J.
Publication year - 1985
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.1985.070300132
Subject(s) - epoxide , amine gas treating , epoxy , yield (engineering) , amide , thermal oxidation , chemistry , polymer chemistry , oxidative phosphorylation , bond cleavage , alkoxy group , materials science , photochemistry , organic chemistry , catalysis , composite material , oxide , biochemistry , alkyl
The photo and thermal oxidation of various epoxide–amine tridimensional polycondensates is studied by IR spectrophotometry and DSC. The network degradation results in a decrease of the glass transition temperature ( T g ), which is correlated with the quantity of amide groups formed. For each system, the relative yield in skeleton breaks increases with the intensity of internal stresses. A mechanism involving the β scission of α amino alkoxy macroradicals resulting from oxidation of constrained segments of the network is proposed.