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Gamma-photon induced modifications in Polyvinylchloride (PVC) film |
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| Authors: | D Sinha T Swu SP Tripathy R Mishra KK Dwived D Fink |
| Institution: | 1. Department of Chemistry , Nagaland University , Lumani , India , 798601;2. ANPA , Italian National Agency for Environmental Protection , Via V. Brancati 48, Roma , Italy , 00144;3. Arunachal University , Rono Hills, Itanagar , India , 791 111;4. Hahn-Meitner Institute , Glienicker Strasse 100, Berlin , Germany , D-14109 |
| Abstract: | Gamma photon induced modifications in Polyvinylchloride (PVC) polymer have been studied in the dose range of 101-106Gy at room temperature. Polyvinylchloride films have been irradiated with different doses of gamma radiation from a 60Co source. To monitor the chemical and structural changes caused by gamma radiation IR and UV-Vis spectroscopy of pristine and irradiated PVC have been performed and using the spectral data some changes in the properties have been investigated. The spectral studies have indicated that at a dose of 106Gy scissioning of the C-a bonds takes place. This scissioning of the chain initiates decomposition at a lower temperature. Thermal stability of the polymer reduces due to irradiation but the decomposition patterns remain the same. The optical band-gap is found to decrease due to irradiation at doses bigher than 103Gy. |
| Keywords: | Gamma dose 60Co Polyvinylchloride (PVC) Band-gap Carbon cluster |