Abstract
The radiolytic surface oxidation of polyethylene and polypropylene in air and in three-phase dispersed systems including water or an aqueous formic acid solution has been studied using adhesion tests. The oxidation in the center and on the periphery of a dispersion of a 1.5 g/cm2 thickness has been analyzed at an electron energy of 3 MeV. It has been shown that the adhesive characteristics change during storage of the irradiated plastic. In the case of polyethylene, higher stability of the oxidized layer is achieved by irradiation in water containing formic acid. In the case of polypropylene, the presence of water in the air stream, as well as postradiation heating of the film irradiated in an air stream without water, increases the observed adhesion.
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The work was supported by the IAEA, research contract no. 24429, using the equipment of the unique research facility “Radiation-Chemical Research Complex” at the Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (topic АААА-А18-118011190130-0).
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Translated by S. Zatonsky
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Bludenko, A.V., Ponomarev, A.V., Kholodkova, E.M. et al. Influence of Irradiation and Postradiation Storage on the Adhesion of Polyolefins. High Energy Chem 56, 258–263 (2022). https://doi.org/10.1134/S0018143922040130
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DOI: https://doi.org/10.1134/S0018143922040130