EFFECT OF SURFACE TREATMENT WITH PULSED ELECTRON BEAM ON STRUCTURAL AND FUNCTIONAL PROPERTIES OF POLYTETRAFLUOROETHYLENE

10.25712/ASTU.1811-1416.2025.03.003

Authors

Keywords:

polytetrafluoroethylene, surface modification, electron beam, surface energy, wettability, degree of crystallinity, mechanical properties

Abstract

The article presents the results of studying the structural and functional properties of polytetrafluoroethylene (PTFE) after surface treatment with a pulsed electron beam. Electron beam modification was carried out at an exposure duration of 100 μs; beam current density of 0.25-1.23 A/cm2, pressure of 5-7 Pa and accelerating voltage of 8-9 kV. The surface wettability and free surface energy of the samples, changes in strength, elongation and elastic modulus as a result of modification, material hardness and crystalline properties were studied. For modified PTFE, a decrease in the wetting angle to 64.5° and an increase in the free surface energy to 55.5 mN/m were noted. For most of the studied samples, an increase in tensile strength and a decrease in the relative elongation at break were observed. The elastic modulus of the samples significantly increased. The crystalline structure of PTFE after modification changes insignificantly, while the size of crystallites in the material decreases from 74 nm to 67-73 nm. Pulsed electron beam treatment of PTFE significantly increases the surface energy while maintaining mechanical properties. The data indicate that the method is promising for effective modification of the surface of polytetrafluoroethylene without reducing strength.

Author Biographies

Alena Korzhova, National Research Tomsk State University, Lenin Ave., 36, Tomsk, 634050, Russia

Postgraduate student, Junior Researcher of the Center for Research in Materials and Technologies of the National Research Tomsk State University

Olesya Laput, National Research Tomsk State University

Candidate of Technical Sciences, Senior Researcher of the Center for Research in Materials and Technologies of the National Research Tomsk State University, Senior Lecturer at the Department of Natural Compounds, Pharmaceutical and Medical Chemistry of the National Research Tomsk State University

Andrey Kazakov, Tomsk State University of Control Systems and Radioelectronics

Candidate of Technical Sciences, Senior Research of the Laboratory of Beam-Plasma Modification of Dielectrics of the Tomsk State University of Control Systems and Radioelectronics

Nadezhda Lazareva, North-Eastern Federal University named after M.K. Ammosov

Candidate of Technical Sciences, Leading Researcher of the educational, scientific and technological laboratory “Technology of polymer nanocomposites named after Associate Professor S. A. Sleptsova” of the Chemical Department of the Institute of Natural Sciences of the North-Eastern Federal University named after M. K. Ammosov

Andrey Vasilev, North-Eastern Federal University named after M.K. Ammosov

Candidate of Technical Sciences, Senior Researcher of the educational, scientific and technological laboratory “Technology of polymer nanocomposites named after Associate Professor S. A. Sleptsova” of the Chemical Department of the Institute of Natural Sciences of the North-Eastern Federal University named after M. K. Ammosov

Praskovia Tarasova, North-Eastern Federal University named after M.K. Ammosov

Junior Researcher of the laboratory “Polymer Composites for the North” of the Institute of Natural Sciences of the North-Eastern Federal University named after M. K. Ammosov

Iuliia Kapitonova, North-Eastern Federal University named after M.K. Ammosov

Candidate of Chemical Sciences, Senior Researcher of the laboratory “Polymer Composites for the North” of the Institute of Natural Sciences of the North-Eastern Federal University named after M. K. Ammosov

Aitalina Okhlopkova, North-Eastern Federal University named after M.K. Ammosov

Doctor of Technical Sciences, Professor of the Chemical Department of the Institute of Natural Sciences of the North-Eastern Federal University named after M. K. Ammosov, Chief Researcher - Head of the educational, scientific and technological laboratory “Technology of Polymer Nanocomposites named after Associate Professor S. A. Sleptsova” of the Chemical Department of the Institute of Natural Sciences of the North-Eastern Federal University named after M. K. Ammosov

Irina Kurzina, National Research Tomsk State University, Lenin Ave., 36, Tomsk, 634050, Russia

Doctor of Physical and Mathematical Sciences, Director of the Center for Research in Materials and Technologies of the National Research Tomsk State University, Head of the Department of Natural Compounds, Pharmaceutical and Medical Chemistry of the National Research Tomsk State University

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Published

2025-09-30

How to Cite

Korzhova А., Laput О., Kazakov А., Lazareva Н., Vasilev А., Tarasova П., Kapitonova Ю., Okhlopkova А., & Kurzina И. (2025). EFFECT OF SURFACE TREATMENT WITH PULSED ELECTRON BEAM ON STRUCTURAL AND FUNCTIONAL PROPERTIES OF POLYTETRAFLUOROETHYLENE: 10.25712/ASTU.1811-1416.2025.03.003. Fundamental’nye Problemy Sovremennogo Materialovedenia / Basic Problems of Material Science, 22(3), 272–281. Retrieved from https://ojs.altstu.ru/index.php/fpsm/article/view/1233

Issue

Vol. 22 No. 3 (2025): Basic Problems of Material Science

Section

SECTION 1. CONDENSED MATTER PHYSICS