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Unsaturation in irradiated marlex 50 polyethylene: Dose rate and post‐irradiation effects
Author(s) -
Fydelor P. J.,
Pearson R. W.
Publication year - 1961
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.1961.070051407
Subject(s) - irradiation , degree of unsaturation , polyethylene , absorbance , materials science , radical , photochemistry , absorption (acoustics) , chemistry , polymer chemistry , organic chemistry , chromatography , nuclear physics , composite material , physics
Abstract Infrared absorption spectroscopy has been used to demonstrate dose rate dependence of trans ‐vinylene unsaturation in irradiated Marlex 50 polyethylene. When the irradiated polymer is stored in vacuum a decrease is observed in trans ‐vinylene absorbance over a period of several weeks. After high dose rate irradiation the decay is preceded by an initial increase. These phenomena are ascribed to the reaction of “trapped” radicals.