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Author Sobue, H. ♦ Tazima, Y.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword METALS, CERAMICS, AND OTHER MATERIALS ♦ ANNEALING ♦ COLLOIDS ♦ CROSS-LINKING ♦ HEAT TREATMENTS ♦ IRRADIATION ♦ POLYMERS ♦ POLYPROPYLENE ♦ PROPYLENE ♦ RADIATION EFFECTS ♦ TRAPS
Abstract The delayed cross-linking effect in irradiation of polymers was demonstrated by heat-treatment of preirradiated isostatic polypropylene. It was found that many trapped radicals produced during irradiation, which were stable at room temperature, could contribute to delayed crosslinking on annealing the polymer after irradiation at 25 deg C, and a big increase in gel content was observed. Materials irradiated at 180 deg C gave no gel content for high dosage, indicating that in the molten state degradation of the molecular chain was predominant. (M.C.G.)
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-10-22
Publisher Department Univ. of Tokyo
Journal Nature
Volume Number 188
Organization Univ. of Tokyo


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