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Influence of Gamma Irradiation on the Surface Energy Characteristics and Wetting of Polytetrafluoroethylene

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Abstract

The effect of γ-radiation dose on the surface energy characteristics of commercial polytetrafluoroethylene (PTFE) of five different grades has been studied. In the course of PTFE irradiation in air, radiation oxidation leads to the appearance of functional groups and an increase in the acid–base component of the free surface energy and surface polarity; in this case, the dispersive component of the free surface energy decreases with dose because of the radiation-induced loosening, amorphization, and degradation of the polymer. The effect of γ-irradiation of PTFE on its wetting with aqueous solutions of the anionic surfactant sodium dodecyl sulfate has been studied for the first time. It has been found that irradiation increases the wetting and the work of adhesion of the surfactant solution due to the appearance of polar groups in the surface layer.

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Funding

This work was supported by a state contract (no. AAAA-A19-119041090087-4) and performed with the use of the Gammatok-100 radiation research facility at the Institute of Problems of Chemical Physics, Russian Academy of Sciences.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow oblast, Russia

    I. F. Shaimukhametova, S. R. Allayarov & S. V. Demidov

  2. Kazan National Research Technological University, 420015, Kazan, Russia

    I. F. Shaimukhametova & S. A. Bogdanova

Authors
  1. I. F. Shaimukhametova
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  2. S. A. Bogdanova
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  3. S. R. Allayarov
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  4. S. V. Demidov
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Corresponding authors

Correspondence to S. A. Bogdanova or S. R. Allayarov.

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Translated by V. Makhlyarchuk

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Shaimukhametova, I.F., Bogdanova, S.A., Allayarov, S.R. et al. Influence of Gamma Irradiation on the Surface Energy Characteristics and Wetting of Polytetrafluoroethylene. High Energy Chem 55, 381–387 (2021). https://doi.org/10.1134/S001814392105009X

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  • DOI: https://doi.org/10.1134/S001814392105009X

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