Influence of physicochemical properties of solvents on swelling behavior of fluoropolymers |
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Authors: | R. G. Makitra R. I. Musii I. Yu. Evchuk E. Ya. Pal’chikova |
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Affiliation: | (1) Institute of Geology and Geochemistry of Fossil Fuels, National Academy of Sciences of Ukraine, Nauchnaya ul. 3a, Lviv, 79060, Ukraine;(2) Department of Physical Chemistry of Fossil Fuels, Litvinenko Institute of Physicoorganic and Coal Chemistry, National Academy of Sciences of Ukraine, Nauchnaya ul. 3a, Lviv, 79060, Ukraine |
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Abstract: | The experimental data are available on the swelling of carbon-black-filled fluorine-containing polymers (Viton) in a number of solvents. However, the quantitative relation between the physicochemical parameters of the solvents and the degree of swelling of the polymers is still unclear. It has been shown that this relation may be determined in terms of the linear free energy concept via solvation of linear equations with due regard for various characteristics of solvents. The polarizability and basicity of solvents are factors governing the degree of polymer swelling. This fact makes it possible to assume the existence of donor-acceptor interaction between fluorine atoms and donor solvents. |
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