POSTIRRADIATION EVOLUTION OF GAMMA-PRODUCED RADICALS IN ETHYLENE-PROPYLENE RUBBER

Authors
BACCARO S BUONTEMPO U CACCIA B ONORI S PANTALONI M
Citation
S. Baccaro et al., POSTIRRADIATION EVOLUTION OF GAMMA-PRODUCED RADICALS IN ETHYLENE-PROPYLENE RUBBER, Radiation physics and chemistry, 42(1-3), 1993, pp. 241-244
Citations number
5
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Radiation physics and chemistry → ACNP
ISSN journal
0969806X
Volume
42
Issue
1-3
Year of publication
1993
Pages
241 - 244
Database
ISI
SICI code
0969-806X(1993)42:1-3<241:PEOGRI>2.0.ZU;2-4
Abstract
The ESR technique was used to investigate the time evolution of a gamm a-irradiated model rubber (ethylene-propylene copolymer loaded with an tioxidant containing NH functional group ). Measurements have been per formed at different temperatures in the (77-333) K range. Two differen t kinds of radicals (polymer and NO-degrees) have been identified and their activation energy, related to the post-irradiation behaviour. ev aluated. The results suggested the formation of NO-degrees through a b imolecular process.