STUDY BY ELECTRON PARAMAGNETIC RESONANCE OF POLYVINYL CHLORIDE IRRADIATED WITH $gamma$ RAYS (in French)
Electron paramagnetic resonance experiments made on polyvinyl chloride irradiated with gamma rays at 77 and 293 under vacuum give basically different results in the two cases. The chloride irradiated at low temperatures has a 50- gauss ray which is only slightly affected by the action of air, but which disappears when the sample is reheated. No saturation in active centers was observed for doses up to 60 Mrad. The line obtained with polyvinyl chloride irradiated at room temperature is smaller (32 gauss), and its intensity decreases rapidly under the action of oxygen. Above 20 Mrad saturation in active centers is obtained. The phenomena observed can be explained if it is admitted that the centers formed at low temperature are of ions relatively localized and the centers observed at room temperatures are free radicals. (tr-auth)
- Research Organization:
- Centre de Recherches de la Cie de St. Gobain, Antony (Seine), France and Ecole Normale Superieure de St. Cloud, (Seine-et-Oise) France
- NSA Number:
- NSA-15-014312
- OSTI ID:
- 4062245
- Journal Information:
- Journal de Chimie Physique (France) Merged with Rev. Gen. Colloides to form J. Chim. Phys. Rev. Gen. Colloides, Journal Name: Journal de Chimie Physique (France) Merged with Rev. Gen. Colloides to form J. Chim. Phys. Rev. Gen. Colloides Vol. Vol: 58; ISSN JCPQA
- Country of Publication:
- Country unknown/Code not available
- Language:
- French
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