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Influence of IR Laser Radiation on the Surface of Polytetrafluoroethylene Containing Small Amounts of Perfluoropropyl Vinyl Ether Units

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Abstract

The surface of chemically modified polytetrafluoroethylene, obtained by introducing 1 mol % perfluoropropyl vinyl ether in the polytetrafluoroethylene macromolecule chain, has been studied using Raman spectroscopy. Three conventional zones with varying degrees of modification are distinguishable on the surface, and the spectrum of the ablation crater is fundamentally different from that of the pristine polymer. The crater spectrum, showing a general rise in the baseline, exhibits new bands due to both double carbon bonds and absorption bands of CF3 groups. A key factor in the laser ablation process is the influence of defects in the regular structure of polymer macromolecules, both intrinsically present in the polymer and induced by laser irradiation.

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Funding

This work was supported by the Russian Foundation for Basic Research, project no. 19-33-90004, and in part in the framework of State Assignment AAAA-A19-119041090087-4. From the Belarusian side, the work was supported by the State Program of Scientific Research “Physical materials science, new materials and technologies” under the subprogram “Polymer materials and technologies,” task 6.67.

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Authors and Affiliations

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

    I. A. Frolov & S. R. Allayarov

  2. V.A. Belyi Metal-Polymer Research Institute, National Academy of Sciences of Belarus, 246050, Gomel, Belarus

    E. M. Tolstopyatov, L. A. Kalinin, P. N. Grakovich & L. F. Ivanov

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  1. I. A. Frolov
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  2. S. R. Allayarov
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  3. E. M. Tolstopyatov
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  4. L. A. Kalinin
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  5. P. N. Grakovich
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  6. L. F. Ivanov
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Correspondence to S. R. Allayarov.

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Translated by S. Zatonsky

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Frolov, I.A., Allayarov, S.R., Tolstopyatov, E.M. et al. Influence of IR Laser Radiation on the Surface of Polytetrafluoroethylene Containing Small Amounts of Perfluoropropyl Vinyl Ether Units. High Energy Chem 56, 131–137 (2022). https://doi.org/10.1134/S0018143922020023

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  • DOI: https://doi.org/10.1134/S0018143922020023

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