ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 22, Number 4
JKCSEZ 22(4)
August 20, 1978 

The kinetics of the bulk polymerization of propylene sulfide initiated by o-sulfobenzoic anhydride were investigated, which proceeded by a zwitterionic mechanism.The instantaneous concentrations of monomer and initiator were determined by means of ir-and nmr-spectroscopy. The rate constant of propagation was found to be about three order of magnitude higher than that of initiation and this should be caused by a zwitterion mechanism.