The kinetics of polymerisation of acrylamide have been studied in the presence of vanadium(IV) perchlorate over the range of 25–40°C., 4,4′‐dicyano‐4,4′‐azodipentanoic acid being used as initiator. It has been found that the overall rate of reaction is proportional to the concentration of the initiator and to the reciprocal of the concentration of the vanadium salt. The pre‐exponential factor and energy of activation for the termination reaction have been calculated from the rates of polymerisation determined the values found being 2.16ċ104 l./mole sec. and 1.2 kcal./mole respectively. Finally, the mechanism of chain termination is discussed.
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Cavell et al. (1964) studied this question.