EFFECTS OF ELECTRON-BEAM ON THE STRUCTURAL MODIFICATION OF THE CO-POLYMERIC AND THE TERPOLYMERIC FLUOROCARBON RUBBERS

Citation
I. Banik et al., EFFECTS OF ELECTRON-BEAM ON THE STRUCTURAL MODIFICATION OF THE CO-POLYMERIC AND THE TERPOLYMERIC FLUOROCARBON RUBBERS, Radiation physics and chemistry, 51(2), 1998, pp. 195-204
Citations number
14
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Physical","Physics, Atomic, Molecular & Chemical
ISSN journal
0969806X
Volume
51
Issue
2
Year of publication
1998
Pages
195 - 204
Database
ISI
SICI code
0969-806X(1998)51:2<195:EOEOTS>2.0.ZU;2-E
Abstract
Electron beam initiated modification of the copolymeric and the terpol ymeric fluorocarbon rubbers has been carried out in absence and presen ce of trimethylolpropane triacrylate (TMPTA). ATR-IR studies show abso rption bands at 1710 cm(-1) due to [GRAPHICS] and 1632 cm(-1) due to d ouble bonds, indicating aerial oxidation and dehydrofluorination, resp ectively. The later is also measured from the C-F absorbances at 1397, 1021 and 672 cm(-1). XPS studies are in line with the IR-observations . Comparative study of the copolymer and the terpolymer based systems over a range of radiation doses (50-200 kGy) reveals an increased tend ency towards oxidation and dehydrofluorination of the former. The gel content is also slightly lower. The amount of oxidation is reduced wit h the incorporation of TMPTA at a level of 1 part. Magnesium oxide, wh ich is generally added in fluorocarbon recipe, shows an increased tend ency towards dehydrofluorination at a particular radiation dose (50 kG y). (C) 1998 Elsevier Science Ltd. All rights reserved.