Polymerization of the symmetrical nonconjugated diolefin, N,N′‐methylene bisacrylamide, was carried out using peroxodisulphate ion ‐Fe2+ as redox initiator. The rate of polymerization is found to depend on [M]3/2 and [S2O82−]1/2 and independent of [Fe2+] over a range. A polymerization mechanism involving cyclopolymerization in the propagation step is suggested. Evidence in favor of the cyclopolymerization mechanism is discussed. Evaluation of the rate parameters indicates that the deactivation of the primary radical SO4− by Fe2+ ion is a factor to be reckoned with.
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