Abstract
Abstract The effect of agitation on the γ-ray induced polymerization of ethylene was studied in a gaseous system at a pressure of 400 kg/cm2 and at a temperature of 30°C, with dose rates ranging from 9.0×102 to 3.8×105 rad/hr. Both the rate and the degree of polymerization decreased upon agitation to I. 50% of those in the polymerization without agitation. The kinetical analysis of the experimental results has shown that this decrease in the rate and in the degree of polymerization is mainly due to a decrease in the absolute propagation rate. Further, it was found that agitation has no effect on initiation and transfer reactions. The termination was not effected by agitation under a high dose rate, but it was slightly promoted at lower dose rates.
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