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Some effects of ionizing radiation on a polyhydroxyether
Author(s) -
Golden J. H.,
Hammant B. L.,
Hazell E. A.
Publication year - 1968
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.1968.070120801
Subject(s) - epichlorohydrin , ionizing radiation , bond cleavage , polymer , materials science , irradiation , chain scission , degradation (telecommunications) , ultimate tensile strength , composite material , radiation , bisphenol a , yield (engineering) , polymer chemistry , photochemistry , chemistry , organic chemistry , epoxy , physics , nuclear physics , computer science , catalysis , telecommunications
The behavior of the polyhydroxyether derived from bisphenol A and epichlorohydrin on exposure to electron irradiation (0–500 Mrads) in vacuum has been investigated. The polymer underwent chain scission, G = 0.20 (scission per 100 e. v.), with no evidence of crosslinking. Degradation was accompanied by the loss of H 2 together with smaller quantities of CO, CO 2 , and CH 4 . Spectroscopic studies are reported, and a mechanism of degradation is proposed. The tensile yield stress and fracture energy of molded specimens were also examined, and changes in these properties as functions of radiation dose and molecular weight are discussed.