Abstract
In situ dielectric spectroscopy at frequencies ranging from 1 to 105 Hz was used to study chemical transformations during the heating of cobalt(II) and nickel(II) acrylates from −160 to +400°C. On the basis of analysis of the evolution of dielectric relaxation time spectra, processes that correspond to three macroscopic stages in different temperature intervals were distinguished: dehydration, solid-state thermal polymerization, and decarboxylation of metallopolymers. These processes lead to the formation of a polymer matrix that stabilizes nanosized metal or metal oxide phases. In the case of cobalt acrylate, the crosslinking step occurs in a temperature interval other than that of polymerization. It was found that electric conductivity varies over six orders of magnitude upon the formation of the nanosized metal phase.
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Original Russian Text © I.A. Chernov, G.F. Novikov, G.I. Dzhardimalieva, A.D. Pomogailo, 2007, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2007, Vol. 49, No. 3, pp. 428–437.
This work was supported by the Russian Foundation for Basic Research, project nos. 04-03-32634, 04-03-97230_r2004 naukograd_a, 04-03-97233, 06-03-81014 Bel_a, INTAS 05-1000008-7834, and the 2006 Russian Academy of Sciences Program “Fundamental Problems of Physics and Chemistry of Nanosized Systems and Nanomaterials.”
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Chernov, I.A., Novikov, G.F., Dzhardimalieva, G.I. et al. Thermal polymerization of cobalt(II) and nickel(II) acrylates: Use of in situ dielectric measurements. Polym. Sci. Ser. A 49, 267–274 (2007). https://doi.org/10.1134/S0965545X07030066
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DOI: https://doi.org/10.1134/S0965545X07030066