The effect of crosslinking on the reactivity of free radicals in isotactic polypropylene |
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Authors: | Marta Klimov Jozef TinO Eberhard Borsig Peter Ambrovic |
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Institution: | Marta Klimová,Jozef Tin?O,Eberhard Borsig,Peter Ambrovic? |
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Abstract: | Isotactic polypropylene of various degrees of crosslinking was prepared using high concentrations of dicumyl peroxide as the crosslinking agent. Free radicals were generated by γ irradiation of crosslinked iso-PP with a dose of 2.4 Mrad. It was found that the rate constant for free-radical decay is independent of crosslinking in the temperature range from ?30 to +20°C. The result is discussed from the point of view of degradation processes taking place simultaneously with crosslinking of iso-PP. |
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