Deformation of Polyethylene Subjected to Static and Nonstatic Stresses and Krypton Ions Irradiation
Kupchishin A.I. Kozlovsky A.L. Niyazov M.N. Tlebaev K.B. Bondar O.V. Pogrebnjak A.D.
April 2025Multidisciplinary Digital Publishing Institute (MDPI)
Polymers
2025#17Issue 8
The dependence of polyethylene deformation on applied mechanical stress under varying load conditions and radiation doses was investigated experimentally. Obtained results reveal significant alterations in the mechanical properties of polyethylene following irradiation with krypton ions at doses of 1.5 × 106, 1.6 × 107, 5.0 × 108, and 1.0 × 109 ions/s. The stress–strain curves obtained for both the unirradiated and irradiated samples are numerically modeled using frameworks developed by the authors. The findings indicate that irradiation with krypton ions at an energy level of 147 MeV exerts a pronounced impact on the deformation and strength characteristics of polyethylene. Notably, increasing the radiation dose to 109 particles/s results in a 2.5-fold increase in the rate of mechanical stress. Furthermore, the degree of deformation distortions in molecular chains induced by high-energy Kr15+ ion irradiation has been quantified as a function of irradiation fluence. Increasing the irradiation fluence from 106 ion/cm2 to 107 ion/cm2 causes only minor variations in deformation distortions, which are attributed to the localized isolation of latent tracks and associated changes in electron density. A comparative analysis of the mechanical behavior of irradiated polymer materials further revealed differences between ion and electron irradiation effects. It was observed that Teflon films lose their plasticity after irradiation, whereas polyethylene films exhibit enhanced elongation and tearing performance at higher strain values relative to their non-irradiated counterparts. This behavior was consistently observed for films irradiated with both ions and electrons. However, an important distinction was identified: high-energy electron irradiation degrades the strength of polyethylene, whereas krypton ion irradiation at 147 MeV does not result in strength reduction.
exponential model , ion irradiation , krypton ions , mechanical properties , polyethylene , radiation dose
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Physico-Technological Center, Abai Kazakh National Pedagogical University, 13, Almaty, Dostyk, 050010, Kazakhstan
Al-Farabi Kazakh National University, 71 Al-Farabi Ave., Almaty, 050040, Kazakhstan
Institute of Nuclear Physics, 1 Ibragimova Str., Almaty, 050057, Kazakhstan
Faculty of Electronics and Information Technologies, Sumy State University, 116 Kharkivska St., Sumy, 40007, Ukraine
Faculty of Material Science and Technology in Trnava, Institute Materials, Slovak University of Technology in Bratislava, Trnava, 91724, Slovakia
Physico-Technological Center
Al-Farabi Kazakh National University
Institute of Nuclear Physics
Faculty of Electronics and Information Technologies
Faculty of Material Science and Technology in Trnava
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