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Author CROOK, M. A. ♦ WALKER, F. S.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher Nature Publishing Group
Language English
Subject Keyword CHEMISTRY ♦ AIR ♦ COBALT 60 ♦ DECOMPOSITION ♦ DIAGRAMS ♦ DISTRIBUTION ♦ ELECTRONS ♦ GAMMA SOURCES ♦ IRRADIATION ♦ MEASURED VALUES ♦ MOLECULES ♦ ORGANIC CHLORINE COMPOUNDS ♦ POLYMERIZATION ♦ POLYMERS ♦ POLYVINYLS ♦ RADIATION DOSES ♦ STATISTICS ♦ VACUUM ♦ VISCOSITY ♦ WEIGHT
Abstract Gradient elution fractionation and viscosity measurements were used to study changes in the molecular weight distribution in irradiated polyvinyl chloride. The polymer was irradiated with either 6 Mrad of Co<sup>60</sup> gamma rays in vacuum or 6 Mrad of 2-Mev electrons in air. The molecular weight distribution curve of vacuum-irradiated polymer showed some crosslinking but no degradation, while that for air-irradiated polymer showed extensive degradation. Attempts were made to fit statistical theories to the curves, and it is concluded that the crosslinking process obeys a simple statistical theory while the degradation process does not obey any such simple idea. (D.L.C.)
ISSN 00280836
Educational Use Research
Learning Resource Type Article
Publisher Date 1963-06-22
Publisher Department British Insulated Callender's Cables, Ltd., London
Journal Nature
Volume Number 198
Issue Number 4886
Organization British Insulated Callender's Cables, Ltd., London


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