Abstract
1. Polymethyl vinyl ketone (PMVK), calcined at low temperatures (400–500°), differs sharply from the hightemperature samples (670–870°) in electrical properties and in the character of the influence of oxygen of the EPR signal and electroconductivity. 2. The electroconductivity of low-temperature PMVK is determined by electron exchange among the areas with a high degree of conjugation in the polymer, i.e., by the mobility of the current carriers. 3. The intensity of the EPR signal of the polymer varies little with increasing temperature of calcining, and the appearances of unpaired electrons in the polymer is due not to the cleavage of carbon bonds, but to the formation of complexes with charge transer (CCT).
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