Abstract

Retarded AIBN-initiated radical polymerization of vinyl acetate in the presence of 2-methylfuran or 2-furoic acid gives anomalous kinetic orders. A simple sensitivity technique has been applied to these systems. It has been found that reinitiation and termination are negligible in the mechanism of retardation. This result seems to explain the observed kinetic orders. Furthermore, this technique indicates that degradative transfer for macroradicals is more pronounced than transfer for primary radicals for both systems. In spite of this fact, it was found necessary to consider primary radical transfer to 2-furoic acid.

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