High-speed MAS F-19 NMR analysis of an irradiated fluoropolymer

Dargaville, T. R., George, G. A., Hill, D. J. T., Scheler, U. and Whittaker, A. K. (2002) High-speed MAS F-19 NMR analysis of an irradiated fluoropolymer. Macromolecules, 35 14: 5544-5549. doi:10.1021/ma020195q

Author Dargaville, T. R.
George, G. A.
Hill, D. J. T.
Scheler, U.
Whittaker, A. K.
Title High-speed MAS F-19 NMR analysis of an irradiated fluoropolymer
Journal name Macromolecules   Check publisher's open access policy
ISSN 0024-9297
Publication date 2002
Sub-type Article (original research)
DOI 10.1021/ma020195q
Volume 35
Issue 14
Start page 5544
End page 5549
Total pages 6
Place of publication Washington, United States
Publisher American Chemical Society
Collection year 2002
Language eng
Subject C1
250502 Physical Chemistry of Macromolecules
780103 Chemical sciences
Abstract The effect of gamma-radiation on a perfluoroalkoxy (PFA) resin was examined using solid-state high-speed magic angle spinning (MAS) F-19 NMR spectroscopy. Samples were prepared for analysis by subjecting them to gamma-radiation in the dose range 0.5-3 MGy at either 303, 473, or 573 K. New structures identified include new saturated chain ends, short and long branches, and unsaturated groups. The formation of branched structures was found to increase with increasing irradiation temperature; however, at all temperatures the radiation chemical yield (G value) of new chain ends was greater than the G value of long branch points, suggesting that chain scission is the net process.
Keyword Polymer Science
Electron-beam Irradiation
Induced Cross-linking
Linked Polytetrafluoroethylene Ptfe
Radiation Stability
Vinyl Ether)
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Australian Institute for Bioengineering and Nanotechnology Publications
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Created: Tue, 14 Aug 2007, 17:34:00 EST