Abstract

Features of the kinetics of polymerization of vinylchloride in bulk at high conversions in the presence of various initiators have been studied. A correlation has been found between the type of initiator and the acceleration of polymerization in the region of conversion studied. It has been shown that a falling-off and, in the limit, the complete elimination of the polymerization acceleration at high conversions is connected with the participation of the initiator in chain-transfer reaction (weak-inhibition). The nature of the inhibitor also affects the thermal stability of polyvinylchloride, an interconnection existing between the kinetics of polymerization at high conversions and the degradation of the polymer formed.

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