Structural properties of sodium ion implanted poly(vinyl alcohol) films
| Autor: | N. V. Bhat, V.A. Bambole, Mandar M. Nate, M.B. Kurup |
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| Rok vydání: | 2005 |
| Předmět: |
Vinyl alcohol
Polymers and Plastics Scanning electron microscope Stereochemistry Sodium chemistry.chemical_element macromolecular substances General Chemistry Surfaces Coatings and Films Ion chemistry.chemical_compound Crystallinity chemistry X-ray crystallography Materials Chemistry Molecule Fourier transform infrared spectroscopy Nuclear chemistry |
| Zdroj: | Journal of Applied Polymer Science. 98:276-283 |
| ISSN: | 1097-4628 0021-8995 |
| Popis: | Poly(vinyl alcohol) (PVA) films were implanted with sodium ions at various energies and total doses. Modified films were characterized by Fourier transform IR (FTIR), UV–visible (UV–vis), X-ray diffraction (XRD), and scanning electron microscopy (SEM). From FTIR studies, it was evident that scission of the main chain occurred together with removal of hydrogen and hydroxyl groups. Sodium ions formed weak bonds with oxygen from the neighboring chains. UV–vis studies of implanted PVA showed increases in the absorbance values with the various energies and total doses. XRD studies revealed that, as the energy and total dose increased overall, the crystallinity decreased and new peaks at different 2θ values appeared. Changes in the crystallinity were also studied for thermally annealed PVA films in order to correlate and understand the phenomena of recrystallization due to ion implantation. The morphological features of the films were investigated by SEM. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 276–283, 2005 |
| Databáze: | OpenAIRE |
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