Transport properties of polyimides containing phenylquinoxaline moieties |
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| Authors: | M N Vidyakin Yu N Lazareva Yu P Yampol’skii A Yu Alentiev I A Ronova M Bruma E Hamciuc R Lungu |
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| Institution: | (1) Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, Moscow, 119991, Russia;(2) Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991, Russia;(3) Institute of Macromolecular Chemistry, Romanian Academy, Alea Gr. Ghica Voda 41A, Iasi, 700487, Romania |
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| Abstract: | The gas permeabilities of a number of new structurally related polyimides containing phenylquinoxaline moieties were studied for the first time. The test polymers had different dianhydride units, whereas their diamine components differed in the presence of flexible ether bonds-O-in the main chain, a structure that is reflected in the effective packing of chains and, as a result, in transport parameters. The permeability, diffusion, and solubility coefficients for the gases H2, He, O2, N2, CO, CO2, and CH4, as well as the ideal separation factors for gas pairs, were determined. The transport characteristics of polymers were compared within the given polymer series and with published data for other polymer series. |
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