Thermal polymerization of cobalt(II) and nickel(II) acrylates: Use of in situ dielectric measurements View Full Text


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Article Info

DATE

2007-03

AUTHORS

I. A. Chernov, G. F. Novikov, G. I. Dzhardimalieva, A. D. Pomogailo

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. More... »

PAGES

267-274

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0965545x07030066

DOI

http://dx.doi.org/10.1134/s0965545x07030066

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1038841414


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