Electron beam induced modifications in crystalline structure of polyvinylidene fluoride/nanoclay composites |
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| Affiliation: | 1. Institut de recherche en santé publique, Université de Montréal, Canada;2. Department of Social and Environmental Health Research, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, United Kingdom;3. Canadian Institutes of Health Research, Institute of Population and Public Health, Canada;4. Centre Léa-Roback sur les inégalités sociales de santé de Montréal, Canada |
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| Abstract: | PVDF/nanoclay nanocomposites were prepared via melt mixing method. The intercalated dispersion of the nanoclay in PVDF matrix was confirmed by XRD. According to FTIR, DSC and XRD results, the presence of nanoclay facilitated transition from α-to-β crystalline phase. Electron beam irradiation decreased the melting point of the nanocomposites. The decrease in melting point of the nanocomposites was about 11 °C at 500 kGy. The crystallinity of nanocomposites increased at an irradiation dose of 100 kGy and decreased at higher irradiation doses. The extent of crosslinking of the nanocomposites increased significantly with irradiation up to 300 kGy. The nanoclay intensified the increase in yield strength with irradiation doses up to 300 kGy. The combination of nanoclay and irradiation had a synergistic effect on the increase of yield strength. |
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| Keywords: | Polyvinylidene fluoride Electron beam Nanoclay Crystalline transformation |
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