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Photooxidation of amine crosslinked epoxies II. Influence of structure
Author(s) -
Bellenger V.,
Verdu J.
Publication year - 1983
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.1983.070280901
Subject(s) - amine gas treating , sulfone , methylene , ether , methylene blue , bisphenol a , polymer chemistry , chemistry , photochemistry , nitrogen , materials science , organic chemistry , epoxy , catalysis , photocatalysis
We have studied the photooxidation of networks based on three diepoxides containing isopropylidene or methylene bisphenol structures and three diamines of the dianiline type, with, respectively, methylene (DDM), ether (DDE), or sulfone (DDS) bridges. The results are discussed in terms of photoinitiated radical oxidation mechanisms. The comparison of the different systems shows that the photoinitiating species essentially derive from the phenoxy part, whereas the propagation essentially depends on amine concentration and electron density at the nitrogen atom. The amine structure also plays a very important role in color development.