An ESR study of irradiated poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether) (PFA)
Dargaville, Tim R., Hill, David, & Whittaker, Andrew K. (2001) An ESR study of irradiated poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether) (PFA). Radiation Physics and Chemistry, 62(1), pp. 25-31.
Poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether) (PFA) with 2 mol% perfluoropropyl vinyl ether (PPVE) was exposed to γ-irradiation in vacuum at both 77 K and room temperature and the ESR spectra recorded. Both the main chain, CF2–C.F–CF2, and end chain, CF2C.F2 radicals were identified at both temperatures and their thermal stabilities measured. No radicals unique to the radiolytic cleavage at the PPVE units were observed at room temperature, either due to the low concentration of the comonomer or β-scission to form a chain end radical and a non-radical species. G-values for radical formation at room temperature and 77 K were found to be 0.93 and 0.16, respectively.
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|Item Type:||Journal Article|
|Keywords:||Poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether), ESR; γ-irradiation, Fluoropolymer, G-value|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Polymers and Plastics (091209)|
|Deposited On:||14 Jul 2010 22:09|
|Last Modified:||10 Aug 2011 18:18|
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