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ESR study of polyisobutylene radicals produced by. gamma. -irradiation at 77 K

Journal Article · · J. Polym. Sci., Polym. Phys. Ed.; (United States)

An electron spin resonance (ESR) study has been made of radicals trapped in polyisobutylene irradiated at 77 K. It is concluded that only the -C(Me)/sub 2/-CH- radical remains after heat treatment above 213 K. This radical shows a very sharp doublet ESR spectrum with hyperfine splitting of about 2.2 mT. A broad doublet ESR spectrum observed without warming, which was previously assigned as -C(Me)/sub 2/-CH- is explained as a mixture of a doublet and a triplet.

Research Organization:
Nagoya Inst. of Tech., Japan
OSTI ID:
6467038
Journal Information:
J. Polym. Sci., Polym. Phys. Ed.; (United States), Journal Name: J. Polym. Sci., Polym. Phys. Ed.; (United States) Vol. 19:7; ISSN JPLPA
Country of Publication:
United States
Language:
English