Abstract
In the present study kinetic experiments on the polymerizations of 2-(1-pyrrolidinyl)-2-oxazoline (1) initiated with methyl iodide and with methyl p-toluenesulfonate were carried out to confirm the polymerization mechanisms: methyl iodide initiates “double isomerization polymerization” (DIP) of 1 while methyl tosylate leads to the usual ring-opening isomerization polymerization of 1. The former polymerization characteristically contains the isomerization of propagating species during propagation. The initial intermediate species in each polymerizations was isolated and used as model compounds of propagating species to determine the rate of polymerization. The kinetic experiments for DIP revealed that the initiation occurred more rapidly than each of the isomerization reactions of the initial propagating species and the propagation. The relative contribution of propagating isomers on the polymerization were also evaluated.
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Miyamoto, M., Morimoto, M. & Saegusa, T. Kinetic Study on Double Isomerization Polymerization of 2-(1-Pyrrolidinyl)-2-oxazoline. Polym J 25, 1133–1145 (1993). https://doi.org/10.1295/polymj.25.1133
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DOI: https://doi.org/10.1295/polymj.25.1133