Structure and gas transport properties of polybenzoxazinoneimides with biquinoline units in the backbone

0442109 - ÚMCH 2016 RIV DE eng C - Conference Paper (international conference)
Polotskaya, G. - Guliy, N. - Goikhman, M. - Podeshvo, I. - Brožová, Libuše - Pientka, Zbyněk
Structure and gas transport properties of polybenzoxazinoneimides with biquinoline units in the backbone.
Macromolecular Symposia. Vol. 348 (1). Weinheim: WILEY-VCH Verlag GmbH, 2015, s. 44-53. ISSN 1022-1360.
[International Symposium "Molecular Order and Mobility in Polymer Systems" /8./. St. Petersburg (RU), 02.06.2014-06.06.2014]
Institutional support: RVO:61389013
Keywords : correlation * gas separation * membranes
Subject RIV: CD - Macromolecular Chemistry

Four polymers with heteroaromatic structures were synthesized starting from dichloroanhydride of 2,2´-biquinoline-7,7´-dicarboxylic acid. These are imide-containing polyamic acid and product of its cyclization polybenzoxazinoneimide as well as complexes of these two polymers with Cu(I). Dense film membranes prepared from the four polymers were characterized in terms of their density and free volume. The gas permeabilities to H2, O2, N2, CO2, and CH4 of the four films and the selectivities in separations of industrially important gas pairs were determined. Polymer chemical structures, polymer free volumes, diffusion coefficients and the sizes of gas molecules were correlated with polymer permeabilities. The prepared and investigated polymers show very good separation properties located near the upper bound lines in Robeson's diagrams.
Permanent Link: http://hdl.handle.net/11104/0245816