Oxidative degradation products of irradiated polyethylene
โ Scribed by Shigeru Morisaki
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 709 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0040-6031
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๐ SIMILAR VOLUMES
Linear polyethylene crystals have been degraded with oxygen in the presence of a catalyst composed of cobaltous and bromide ions at temperatures between 60 and 130 ยฐ. The number of carbonyl groups introduced into polyethylene increases as the oxidation temperature is raised. Infra-red spectroscopy a
The techniques of direct and indirect (evolved gas analysis) pyrolysis MS are used to characterize the thermal degradation products of polyethylene oxide. Using direct pyrolysis MS technique the main degradation process is determined to be due to C~ and C~C scissions yielding fragments characteristi
Following gamma irradiation in air which causes bond scission and yields large concentrations of peroxy radicals, maximum oxidation and an increase in crystallinity occurs on the surface of ultrahigh molecular weight polyethylene. Here, bimolecular reactions of peroxy radicals generate carbonyls, mo