Effect of γ-radiation on the structure and morphology of polyvinyl alcohol films

The structure and morphology of polyvinyl alcohol (PVA) films, deposited from solution, was determined by using Infra Red Spectroscopy (IR), X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The films were irradiated with gamma rays for various doses up to 20 mrad. The color of the fil...

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Published inNuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Vol. 237; no. 3; pp. 585 - 592
Main Authors Bhat, N.V., Nate, M.M., Kurup, M.B., Bambole, V.A., Sabharwal, S.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2005
Subjects
Gamma radiation
Morphology
Polyvinyl alcohol
Structure
Polyvinyl alcohol
Gamma radiation
Structure
Morphology
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Summary:The structure and morphology of polyvinyl alcohol (PVA) films, deposited from solution, was determined by using Infra Red Spectroscopy (IR), X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The films were irradiated with gamma rays for various doses up to 20 mrad. The color of the films changed to yellowish-brown after irradiation. The crystallinity percentage, as calculated from XRD and IR spectra, was found to decrease. Additional changes observed in IR absorption bands and XRD revealed the possibility of liberation of –H and –OH groups as well as scission of the main chain.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2005.04.058