An ESR study of the radiation chemistry of poly (tetrafluoroethylene-co-hexafluoropropylene) at 77 and 300 K

Authors
Hill, DJT Mohajerani, S Pomery, PJ Whittaker, AK
Citation
Djt. Hill et al., An ESR study of the radiation chemistry of poly (tetrafluoroethylene-co-hexafluoropropylene) at 77 and 300 K, RADIAT PH C, 59(3), 2000, pp. 295-302
Citations number
23
Categorie Soggetti
Physics
Journal title
RADIATION PHYSICS AND CHEMISTRY
ISSN journal
0969806X → ACNP
Volume
59
Issue
3
Year of publication
2000
Pages
295 - 302
Database
ISI
SICI code
0969-806X(200009)59:3<295:AESOTR>2.0.ZU;2-M
Abstract
The effect of gamma-irradiation on poly( tetrafluoroethylene-co-hexafluorop ropylene) (FEP) with a composition of approximate to 9:1 has been investiga ted at low doses by Electron Spin Resonance Spectroscopy (ESR). Irradiation s have been carried out at 77 and 300 K and the spectra of the radical inte rmediates have been delineated and the temperature dependencies of the spec tra of the major radicals present have been identified. The overall G-value s for radical formation at 77 and 300 K were found to be 0.22 +/- 0.1 and 2 .0 +/- 0.1, respectively. (C) 2000 Elsevier Science Ltd. All rights reserve d.