Publication Type:

Journal Article


Journal of Applied Polymer Science, John Wiley and Sons Inc. (2017)



Blending, degradation, Elastomeric components, Ethylene, Ethylene propylene diene monomer, Gamma Rays, Hydrocarbon environment, Hydrocarbons, Mechanical properties, Morphological analysis, Nuclear application, Nuclear fuel reprocessing, O rings, Optimal composition, Paraffinic hydrocarbons, Rubber, Rubber applications, Sorption properties, Spectroscopic analysis, swelling


<p>In nuclear applications, ethylene propylene diene monomer (EPDM) rubber is the material of choice as gaskets and O-rings due to its radiations resistance. In nuclear fuel reprocessing, in addition to radiation, the elastomeric components have to withstand paraffinic hydrocarbons as well. But, EPDM has poor resistance to hydrocarbons. To enhance the durability of EPDM in such environments, EPDM-chlorobutyl rubber (CIIR) blends of varying compositions were developed and characterized for mechanical, thermal, dielectric, and solvent sorption behavior. Spectroscopic and morphological analysis was used to evaluate the compatibility of blends. Due to synergistic effect, the optimal composition of blends with superior mechanical properties and solvent resistance were found to be 60 to 80% EPDM and 20 to 40% CIIR. The optimized blends were irradiated with gamma rays at cumulative doses up to 2 MGy. Based on spectroscopic, morphological, mechanical, thermogravimetric, and sorption properties, blend containing 80% EPDM was found to have superior retention of properties after irradiation. © 2017 Wiley Periodicals, Inc.</p>


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Cite this Research Publication

N. Ashok, Dr. Meera Balachandran, Lawrence, F., and Sebastian, N., “EPDM-chlorobutyl rubber blends in γ-radiation and hydrocarbon environment: Mechanical, transport, and ageing behavior”, Journal of Applied Polymer Science, 2017.