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Accelerated photo‐oxidation of polyethylene. II. Further evaluation of selected additives
Author(s) -
Taylor Lynn J.,
Tobias John W.
Publication year - 1981
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.1981.070260908
Subject(s) - polyethylene , degradation (telecommunications) , thermal oxidation , oxidative phosphorylation , materials science , anthraquinones , photochemistry , thermal stability , chemical engineering , chemistry , polymer chemistry , organic chemistry , composite material , oxide , biochemistry , telecommunications , botany , computer science , engineering , biology
A number of additives previously observed to promote photo‐oxidative degradation of polyethylene films have been evaluated with respect to their relative photoinitiating effectiveness at wavelengths near 300 nm and their effects on thermal‐oxidative stability of polyethylene. Depending on the nature of the additive, the photo‐oxidation process may display autoretarding or autoaccelerating behavior. Thermomechanical analyses and gel content measurements on UV‐exposed films containing substituted anthraquinones suggest that at short exposure times, photo‐oxidative degradation is accompanied by photochemical crosslinking.