Moldavian Journal of the Physical Sciences (Dec 2010)
Improvement in the radiation stability of synthetic elastomer epdm modified with metallic selenium
Abstract
This study presents the antioxidant effects induced by metallic selenium in ethylene- propylene terpolymer (EPDM) subjected to accelerated ageing by γ-irradiation. Several doses were applied up to 100 kGy in order to qualify this material for nuclear applications. Three concentrations (0.25, 0.50, and 1% w/w) of Se in elastomer were prepared. FTIR spectroscopy and chemiluminescence were performed for characterization of oxidation progress. Kinetic parameters expressed in a function of received dose are assessed for emphasizing the stabilization efficiency of selenium.