Transport properties of polyphenylquinoxalines |
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| Authors: | M N Vidyakin Yu N Lazareva Yu P Yampolskii A Yu Alentiev D Yu Likhachev A L Rusanov O V Kozlova |
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| Institution: | (1) Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, Moscow, 119991, Russia;(2) National Autonomous University of Mexico, 04510, Mexico City, DF, Mexico;(3) Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991, Russia;(4) United Research and Development Centre, Leninskii pr. 66/1, str. 3, Moscow, 119333, Russia |
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| Abstract: | The correlation between chemical structure and gas transport properties is considered for a new class of membrane materials based on structurally similar polyphenylquinoxalines that are characterized by different numbers of flexible-O-ether bonds in the repeating unit and different chain rigidities. Permeability, diffusion, and solubility coefficients have been estimated for the gases H2, He, O2, N2, CO, CO2, and CH4; separation factors for various gas pairs have been determined. For the materials with a similar level of cohesive energy density, which characterizes interchain interactions, permeability decreases with a decrease in chain rigidity, whereas selectivity of gas separation increases. |
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