Chemical state and morphology of Zn and Mg ion-implanted polyvinyl alcohol

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Chemical state and morphology of Zn and Mg ion-implanted polyvinyl alcohol	3 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.1016/j.surfcoat.2020.125558

Title: Chemical state and morphology of Zn and Mg ion-implanted polyvinyl alcohol
Creator: Laput, Olesya A.
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Zuza, Daniil A.
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Vasenina, Irina V.
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Kurzina, Irina A.
Date: 2020
DOI: 10.1016/j.surfcoat.2020.125558
Description: The investigations of the surface physicochemical properties of polyvinyl alcohol modified by magnesium and zinc ion implantation to doses of 1∙10^15 and 1∙10^16 ion/cm^2 and energies of 24 keV (for Zn1.2+) and 30 keV (for Mg1.5+) are described. The effects of the ion beam exceed the projective range of ions by the TRIDYN method; therefore, in the conditions of ion implantation, the long-range effect arises due to radiation diffusion and thermal restructuring of the material. X-ray photoelectron spectroscopy reveals that after ion beam treatment of polyvinyl alcohol, magnesium and zinc are in both metallic and oxidized states. Ion implantation leads to an essential change in the chemical state of the polyvinyl alcohol surface. The surface chemistry modification is assumed to be caused by thermal and radiation effects on the material. The evolution of changes in the surface structure is presented and shown to be independent of the type of implanted metal ion. Restructuring of polyvinyl alcohol is accompanied by an increase in the degree of crystallinity and, as a result, a change in mechanical properties. A change in surface morphology leads to the increase of free surface energy.