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Radiation-Induced Graft Copolymerization of Styrene into Tetrafluoroethylene-Hexafluoropropylene-Vinylidene Fluoride (THV) Terpolymer Films

✍ Scribed by Uwe Lappan; Uwe Geißler; Uwe Gohs

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
540 KB
Volume
296
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

The objective of this work was to investigate the influence of irradiation conditions on grafting of styrene into tetrafluoroethylene‐hexafluoropropylene‐vinylidene fluoride (THV) terpolymer films. Stress–strain measurements, infrared spectroscopy and electron paramagnetic resonance spectroscopy have been used to characterize the pre‐irradiated polymer films regarding tensile strength, elongation at break, changes in the chemical structure and concentration of trapped radicals, respectively. Main‐chain scissions associated with the formation of carbonyl end groups and end‐chain double bond structures have been identified to be the reason for a moderate deterioration of the mechanical properties of the pre‐irradiated films. The yield of grafting has been found to be influenced by THV grade, irradiation temperature and concentration of cross‐linker. magnified image

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