2026-05-05T20:25:21Zhttps://uvadoc.uva.es/oai/request
oai:uvadoc.uva.es:10324/527982022-04-06T20:47:10Zcom_10324_1186com_10324_931com_10324_894col_10324_1404
UVaDOC author Aguilar Lugo, Carla author Suárez García, Fabián author Miguel García, Jesús Ángel author Lozano, Ángel E. author Campa, José G. de la author Álvarez, Cristina 2022-04-06T08:40:53Z 2022-04-06T08:40:53Z 2019 Industrial & Engineering Chemistry Research, 2019, vol. 58, n. 22. p. 9585–9595 0888-5885 https://uvadoc.uva.es/handle/10324/52798 10.1021/acs.iecr.9b01402 A set of mixed matrix membranes (MMMs) has been prepared by incorporating a triptycene-isatin porous polymer network (PPN) to three aromatic polyimides (one commercial, Matrimid, and two synthesized by us: 6FDA–6FpDA and 6FDA–TMPD) covering a wide range of performances for gas separation. The triptycene-isatin PPN is a highly microporous network having a high CO2 uptake and high chemical and thermal stability. The good compatibility between the components (PPN content of 15 and 30% w/w) was supported by the increase in the glass transition temperature of MMMs relative to the pure polyimide membranes. The addition of the PPN particles improved the permeability of all the gases tested, by increasing diffusivity and, in some cases, gas solubility. The improvements were particularly noticeable in Matrimid-based MMMs, where gas permeability increased by 700%, whereas CO2/N2 and CO2/CH4 ideal selectivities decreased by a mere 4% and 12%, respectively. eng Attribution-NonCommercial-NoDerivatives 4.0 Internacional New materials for gas separation applications: Mixed matrix membranes made from linear polyimides and porous polymer networks having lactam groups info:eu-repo/semantics/article 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URL https://uvadoc.uva.es/bitstream/10324/52798/1/New-materials-gas-separation.pdf File MD5 7711f588e039861b4f918de618eee3fd 1179281 application/pdf New-materials-gas-separation.pdf