Abstract
The action of 1- to 4-MeV protons on a copolymer of tetrafluoroethylene and hexafluoropropylene (FEP) in a vacuum is accompanied by the release of more than 25 gaseous products and a decrease in its thermal stability. During the course of proton bombardment, the predominant rupture of lateral C–CF3 bonds with the release of CF3 particles occurs along with the detachment of fluorine and hydrogen atoms yielding H2 and HF. Unlike polytetrafluoroethylene, a distinctive feature of the radiolysis of FEP is a decrease by a factor of 5 in the probability of fluorine detachment from the FEP macromolecule by accelerated protons.
Similar content being viewed by others
References
Ameduri, B. and Boutevin, B., Well-Architectured Fluoropolymers: Synthesis, Properties and Applications, Amsterdam Elsevier, 2004.
Modern Fluoropolymers: High Performance Polymers for Diverse Applications, Schiers, J., Ed., New York Wiley, 1997.
Wall, L.A., Fluoropolymers, New York Wiley–Interscience, 1972.
Panshin, Yu.A., Malkevich, S.G., and Dunaevskaya, Ts.S., Ftoroplasty (Fluoroplastics), Leningrad Khimiya, 1978.
Allayarov, S.R., Olkhov, Yu.A., Shaimukhametova, I.F., Bogdanova, S.A., Belov, G.P., and Dixon, D.A., High Energy Chem., 2016, vol. 50, no. 5, p. 339.
Olkhov, Yu.A., Allayarov, S.R., Nikolskii, V.G., and Dixon, D.A., High Energy Chem., 2011, vol. 45, no. 2, p. 104.
Florin, R.E. and Wall, L.A., J. Res. Natl. Stand., Sect. A, 1961, vol. 65, p. 375.
Lovejoy, E.R., Bro, M.I., and Bowers, G.H., J. Appl. Polym. Sci., 1965, vol. 9, p. 401.
Pinkerton, D.M. and Sach, B.T., Austral. Chem., 1970, vol. 23, p. 1947.
Milinchuk, V.K., Klinshpont, E.R., and Pshezhetskii, S.Ya., Makroradikaly (Macroradicals), Moscow Khimiya, 1980.
Allayarov, S.R., Konovalikhin, S.V., Olkhov, Yu.A., Jackson, V.E., Kispert, L.D., Dixon, D.A., Ila, D., and Lappan, U., J. Fluorine Chem., 2007, vol. 128, p. 575.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © S.R. Allayarov, D.A. Dixon, 2017, published in Khimiya Vysokikh Energii, 2017, Vol. 51, No. 1, pp. 3–7.
Rights and permissions
About this article
Cite this article
Allayarov, S.R., Dixon, D.A. Gaseous products of the bombardment of a tetrafluoroethylene–hexafluoropropylene copolymer with accelerated MeV protons. High Energy Chem 51, 1–5 (2017). https://doi.org/10.1134/S0018143917010027
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0018143917010027