Chemiluminescence study on gamma-irradiated EPDM/IIR blends

The oxidation degradation of gamma exposure on various compositions of ethylene-propylene diene terpolymer/isoprene rubber (EPDM/IIR) is presented. The polymer samples consisting of both elastomers (mixing ratios 25:75, 50:50, 75:50) were subjected to radiochemical modification in air, in water and...

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Published in:Journal of Optoelectronics and Advanced Materials 2008-04, Vol.10 (4), p.834-836
Main Authors: Lungulesup, M, Zaharescu, T, Jipa, S, Setnescu, R, Setnesc, T
Format: Article
Language:English
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Summary:The oxidation degradation of gamma exposure on various compositions of ethylene-propylene diene terpolymer/isoprene rubber (EPDM/IIR) is presented. The polymer samples consisting of both elastomers (mixing ratios 25:75, 50:50, 75:50) were subjected to radiochemical modification in air, in water and in salt solution (5 % NaCl) at various absorbed doses (10, 20 and 50 KGy), in order to investigate the progressive radiation damage of materials in function of radiation resistance of components. The thermal stability of blends was tested by isothermal chemiluminescence method. From the dependences of CL intensities on investigation time the kinetic parameters for thermal oxidation of irradiated samples were calculated and discussed. The contribution of each component to the progress of radiooxidative degradation is evaluated.
ISSN:1454-4164