Abstract
The processing of polymers and copolymers of vinyl chloride usually requires the incorporation of special additives imparting a high stability to the compositions and the articles made from them. Usually, the stabilizers are added to a powder of the finished polymer in the manufacture of the composition. There are papers in the literature on the addition of stabilizers to the reaction mixture during the polymerization of the vinyl chloride [1,2]. In these papers, it is stated that there is an increase in the efficacy of the action of the stabilizers added to the monomer as compared with their addition to the finished polymer. The authors explain this phenomenon by the greater uniformity of distribution of the stabilizer in the polymer when it is added to the mass undergoing polymerization. However, this explanation does not take into consideration the possibility of the influence of a stabilizer introduced into the reaction medium on the mechanism of the polymerization process and the structure and intrinsic stability of the polymer connected with it. In the present work, the possibility of increasing the intrinsic stability of polymers and copolymers of vinyl chloride by the incorporation of additives during polymerization has been investigated.
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