Study of radiolysis products of telomeres produced by tetrafluoroethylene polymerization in carbon tetrachloride

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In this work, tetrafluoroethylene telomers were synthesized in carbon tetrachloride. The resulting telomers were then irradiated in air with 60Co γ-rays at doses in the range of 18–1020 kGy. When studying the IR spectra of the irradiation products, it was found that the intensity of the absorption band (AB) at 850 cm–1, which can be associated with the –CCl3 terminal groups, decreases with increasing irradiation dose. At the same time, a new AB appears in the IR spectrum at ~1775 cm–1, caused by the carboxyl group, the intensity of which increases with increasing irradiation dose. Studying the dependence of the intensity of the noted AB on the dose allowed us to conclude that the removal or transformation of the terminal –CCl3 groups and the formation of –COOH groups are independent processes.

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Sobre autores

Yu. Shul’ga

Federal Research Center for Problems of Chemical Physics and Medicinal Chemistry of the RAS

Email: kga@icp.ac.ru
Rússia, Chernogolovka

G. Kichigina

Federal Research Center for Problems of Chemical Physics and Medicinal Chemistry of the RAS

Autor responsável pela correspondência
Email: kga@icp.ac.ru
Rússia, Chernogolovka

P. Kushch

Federal Research Center for Problems of Chemical Physics and Medicinal Chemistry of the RAS

Email: kga@icp.ac.ru
Rússia, Chernogolovka

D. Kiryukhin

Federal Research Center for Problems of Chemical Physics and Medicinal Chemistry of the RAS

Email: kga@icp.ac.ru
Rússia, Chernogolovka

Bibliografia

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2. Fig. 1. IR spectra of PTFE (1), telomer-5 (2), and telomer-2 (3).

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3. Fig. 2. IR spectra of telomer-2 irradiated with gamma quanta. The irradiation dose is indicated in the figure.

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4. Fig. 3. Fragment of the IR spectra of irradiated telomer-2. The AB intensity is normalized to the peak intensity at ~1150 cm-1.

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5. Fig. 4. (a) Dependence on I850rel the irradiation dose for telomer-2; (b) dependences on I1775rel the irradiation dose for telomer-2 (1) and telomer-5 (2).

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