Abstract
The affinity of polar extractants (propylene carbonate, dimethylsulfoxide, dimethylformamide, triethylene glycol and dimethylacetamide) and benzene, toluene, p-xylene and m-xylene (so-called BTX fraction) for PIM-1 material was evaluated. The mass-transfer coefficients of selected solvents were determined in organic solvent nanofiltration process. All solvents showed a good affinity toward PIM-1 polymer; while the large values of sorption and PIM-1 swelling degree were in the case of benzene (1.63 g/g, 192%), toluene (1.72 g/g, 186%) and xylenes (1.61–1.76 g/g, 147–170%); while these values for selected polar solvents were in the range of 1.09–1.48 g/g and 83–108%, respectively. The values of sorption and swelling degree were successfully correlated with Hansen’s solubility parameters. Values of permeability coefficients of nonpolar solvents through PIM-1 membranes were 1.5–5.5 times higher than those for polar solvents. With increasing affinity of the solvent toward polymer, the values of the permeability coefficients also increased.
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ACKNOWLEDGMENTS
This work was supported by the Ministry of Science and Higher Education of the Russian Federation, project 14.616.21.0100 (project identifier RFMEFI61618X0100). This work is supported by an Institutional Links grant 351983438. The grant is funded by the British Council and the Ministry of Science and Higher Education of the Russian Federation.
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Yushkin, A.A., Anokhina, T.S., Bazhenov, S.D. et al. Sorption and Nanofiltration Characteristics of PIM-1 Material in Polar and Non-Polar Solvents. Pet. Chem. 58, 1154–1158 (2018). https://doi.org/10.1134/S096554411813011X
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DOI: https://doi.org/10.1134/S096554411813011X