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ESR studies of local concentrations of radicals in polyethylene irradiated at 1.5, 4.2 and 77 K

✍ Scribed by Keichi Nunome; Hachizo Muto; Kazumi Toriyama; Machio Iwasaki

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 450 KB
Volume: 39
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(76)80325-9

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✦ Synopsis

The microwxtie power saturation behaviour of alkyl radicals in polyethylene irradiated at l&4.2 and 77 K suggests that the local .concentrations of radicals in spurs is considerably higher in the samples irradiated at 1.5 and 4.2 K. Upon annealing the samples at 77 K, the local concentrations became nearly the same as those of the sample irradiated at 77 K. The decrease of the local concentrations at 77 K was larger than that of the total concentrations suggesting an expansion of the initial spur at 77 K.

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