Singh, R. P. ; Mani, R. ; Sivaram, S. ; Lacoste, J. ; Lemaire, J. (1994) Photo-induced radical formation in ethylene-propylene copolymer by electron spin resonance spectroscopy Polymer, 35 (7). pp. 1382-1385. ISSN 0032-3861
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0032-3861(94)90337-9
Abstract
The photodegradation of heterophasic ethylene-propylene copolymers and their homopolymers has been investigated by the study of hydroperoxide formation, and by electron spin resonance (e.s.r.) and infra-red spectroscopy. On irradiation of polymer films in air at 60°C with a light of wavelength longer than 300 nm, polymer hydroperoxides are formed. The behaviour of peroxyl radicals generated in the samples on irradiation of polymer hydroperoxides with ultraviolet light at -50°C in vacuum has been identified and compared with a combination of e.s.r. and derivatization reactions. From Fourier transform infra-red spectroscopy the structure of peroxyl radicals formed is identified.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Radical Formation; Ethylene-propylene Copolymer; Electron Spin Resonance |
| ID Code: | 48574 |
| Deposited On: | 14 Jul 2011 14:15 |
| Last Modified: | 14 Jul 2011 14:15 |
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