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SEM images of fractured surfaces of EPDM/rubber/nanosilica composites before and after irradiation (10,000 X magnification): (a) E-Cl-B-S 0 kGy, (b) E-Cl-B-S 20 kGy, (c) E-Cl-B-S 150 kGy, (d) E-Br-B-S 0 kGy, (e) E-Br-B-S 20 kGy, (f) E-Br-B-S 150 kGy).
