Effects of Gases on Irradiated Polyvinyl Chloride as Studied by Electron Spin Resonance

The radicals produced by gamma irradiation of polyvinyl chloride powder in various gases and in vacuum are observed by electron spin resonance. Different patterns are observed for the irradiation in vacuum, air, and sulfur dioxide. No electron spin resonance absorption is obtained by the irradiation...

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Veröffentlicht in:	The Journal of chemical physics 1960-01, Vol.32 (2), p.371-374
Hauptverfasser:	Kuri, Zenichiro, Ueda, Hisashi, Shida, Shoji
Format:	Artikel
Sprache:	eng
Schlagworte:	ABSORPTION ACTIVATION AIR CHEMICAL REACTIONS CHLORIDES ELECTRONS ENERGY FREE RADICALS GASES HALOGENS HYDROGEN SULFIDES IRRADIATION METALS, CERAMICS, AND MATERIALS NITROGEN OXIDES POLYVINYLS POWDERS RADIATION EFFECTS REACTION KINETICS RECOVERY RESONANCE SPIN SULFUR OXIDES VACUUM VELOCITY VINYL RADICALS
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Beschreibung
Zusammenfassung:	The radicals produced by gamma irradiation of polyvinyl chloride powder in various gases and in vacuum are observed by electron spin resonance. Different patterns are observed for the irradiation in vacuum, air, and sulfur dioxide. No electron spin resonance absorption is obtained by the irradiation in nitrogen oxide, halogens, and hydrogen sulfide. The recombination reaction velocity of the radical produced in vacuum is measured at different temperatures to get the activation energy 38 kcal/mole.
ISSN:	0021-9606 1089-7690
DOI:	10.1063/1.1730701