RADIOCHEMICAL ALTERATIONS IN POLYVINYL CHLORIDE UNDER THE EFFECT OF Co$sup 60$ GAMMA RADIATION (in German)
The role of air oxygen in the radiochemical changes of polyvinyl chloride was investigated. A polyvinyl chloride emulsion polymeride with a K value of 60 to 65 was used as a sample. It was radiated in the form of powder, films, and massive cylinders in high vacuum and in air. The total viscosity of the powders undergoes, after irradiation in vacuum, a slight deterioration at doses up to 5 x 10/sup 6/ r but at higher doses a lattice-like polymerization occurs. In irradiation in air the color of the sample does not vary, but in vacuum a brown color occurs. The behavior of massive cylinders is quite different from that of powders after irradiation. There is no variation in the total viscosity after irradiation in air and vacuum. Decomposition was observed up to doses of 5 x 10/sup 5/ r, then an increasing lattice-life polymerization and insolubility occurred. A red color is observed after doses of 3 x 10/sup 5/ r and it deepens with increasing irradiation doses. Film irradiated in air was not colored, but coloration occurred in vacuum irradiation. (J.S.R.)
- Research Organization:
- Institut fur angewandte Physik der Reinststoffe, Dresden
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-012623
- OSTI ID:
- 4175712
- Journal Information:
- Naturwissenschaften (West Germany), Journal Name: Naturwissenschaften (West Germany) Vol. Vol: 47; ISSN NATWA
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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