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Ion Charge Influence on the Molecular Structure of Polyethylene Terephthalate Films after Irradiation with Swift Heavy Ions

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dc.contributor.author Tuleushev, Adil Z.
dc.contributor.author Zdorovets, Maxim V.
dc.contributor.author Kozlovskiy, Artem L.
dc.contributor.author Harrison, Fiona E.
dc.date.accessioned 2024-09-20T06:19:19Z
dc.date.available 2024-09-20T06:19:19Z
dc.date.issued 2020
dc.identifier.issn 2073-4352
dc.identifier.other doi:10.3390/cryst10060479
dc.identifier.uri http://rep.enu.kz/handle/enu/16737
dc.description.abstract We report here experimental results investigating the influence of the initial swift heavy ion charge on the structure of polyethylene terephthalate (PET) film after irradiation, using a structurally sensitive X-ray diffraction method. Kr ions with an energy of 100 MeV and charges of 13+, 14+, and 15+ were each used at irradiation fluences of 5 × 1010, 7.5 × 1010, 1 × 1011, 2.5 × 1011 and 5 × 1011 ions/cm2 . At constant energy and irradiation fluence, the post-irradiation structural changes in PET film show a clear dependence on the initial ion charge. As either the fluence or ion charge increase, the latent tracks begin to overlap, leading to cross-linking of PET chain molecules to form rotational isomers (rotamers). We use the fluence corresponding to the onset of overlapping to estimate the size of latent tracks for different ion charges. At the highest fluences, the latent tracks become entirely overlapped, and the interchain cross-linking extends throughout the whole film. Since this cross-linking is due to the dipole–dipole interaction of subunits of repeat units of PET chain molecules, it is reversible, in contrast to the well-known chemical cross-linking of polymer chain molecules under irradiation ru
dc.language.iso en ru
dc.publisher Crystals ru
dc.relation.ispartofseries 10, 479;;
dc.subject polyethylene terephthalate ru
dc.subject ion charge ru
dc.subject induced ordering ru
dc.subject cross-linking ru
dc.subject size of latent tracks ru
dc.subject rotamers ru
dc.title Ion Charge Influence on the Molecular Structure of Polyethylene Terephthalate Films after Irradiation with Swift Heavy Ions ru
dc.type Article ru


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