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This paper describes the effect of morphological structure on the electric strength and some physico-chemical properties of polymers with flexible chains (HDPE, LDPE, PP) and polymers with rigid chains (CA). It is shown that a polymer body has a discrete structure consisting of elements of different densities. The most regular structure with high density is characteristic of spherulites. Their size may be modified by different methods: heat treatment, plasticization, addition of nucleating agent, modification of molecular weight, etc. The inter-spherulitic boundary regions are shown to determine the electrical properties of the specimen as a whole. As the spherulite size decreases, the density of the polymer within the boundary regions increases, improving the electric strength.
С. В. Колесов (Wed,) studied this question.