Abstract
The influence of γ-irradiation on the electrical, swelling and mechanical properties of cross- linked butyl (IIR) rubber and ethylene propylene diene monomer (EPDM) and their blends have been investigated. The modulus increased, while the elongation at break decreased with irradiation. The gap width between carbon-carbon particles is found to be highly affected by the irradiation dose, which in turns influenced the electrical conductivity of these blends. The swelling equilibrium data in different solvents were analyzed by the Flory-Rehner equation to obtain estimates of the average molecular weight and cross-link density.
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