Influence of Gamma Irradiation on the Chemical Composition of Polychlorotrifluoroethylene and Polytetrafluoroethylene

The chemical composition of the surfaces of γ-irradiated polytetrafluoroethylene and polychlorotrifluoroethylene plates has been studied by X-ray photoelectron spectroscopy (XPS). In the chemical composition of irradiated polytetrafluoroethylene, the concentration of fluorine decreased and the conce...

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Bibliographic Details
Published inHigh energy chemistry Vol. 54; no. 4; pp. 285 - 290
Main Authors Allayarov, S. R., Dixon, D. A., Allayarov, R. S.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.07.2020
Springer Nature B.V
Subjects
Carbon
Chemical composition
Chemistry
Chemistry and Materials Science
Chlorine
Fluorine
Free radicals
Gamma irradiation
Gamma rays
Oxidation
Photoelectrons
Physical Chemistry
Polychlorotrifluoroethylenes
Polymers
Polytetrafluoroethylene
Radiation Chemistry
X ray photoelectron spectroscopy
polychlorotrifluoroethylene
XPS
EPR spectroscopy
polytetrafluoroethylene
gamma irradiation
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Summary:The chemical composition of the surfaces of γ-irradiated polytetrafluoroethylene and polychlorotrifluoroethylene plates has been studied by X-ray photoelectron spectroscopy (XPS). In the chemical composition of irradiated polytetrafluoroethylene, the concentration of fluorine decreased and the concentrations of carbon and oxygen increased as a result of the degradation of the main polymer chain with the formation of low-molecular-weight compounds and the oxidation of free radicals stabilized on the surface of the irradiated polymer. The chemical composition of the polychlorotrifluoroethylene surface revealed by analyzing the XPS spectrum noticeably changed after γ-irradiation with a decrease in the concentration of carbon and an increase in the concentrations of fluorine, oxygen, and chlorine.
ISSN:0018-1439
1608-3148
DOI:10.1134/S0018143920040037