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dc.contributor.authorMa, Xiaohua
dc.contributor.authorMukaddam, Mohsin Ahmed
dc.contributor.authorPinnau, Ingo
dc.date.accessioned2016-05-03T12:37:07Z
dc.date.available2016-05-03T12:37:07Z
dc.date.issued2016-03-29
dc.identifier.citationBifunctionalized Intrinsically Microporous Polyimides with Simultaneously Enhanced Gas Permeability and Selectivity 2016:n/a Macromolecular Rapid Communications
dc.identifier.issn10221336
dc.identifier.pmid27027259
dc.identifier.doi10.1002/marc.201600023
dc.identifier.urihttp://hdl.handle.net/10754/607759
dc.description.abstractTwo novel intrinsically microporous copolyimides synthesized by condensation reaction of 4,4′-(hexafluoroisopropylidene) diphthalic anhydride (6FDA), 3,3,3′,3′-tetramethyl-1,1′-spirobisindane-5,5′-diamino-6,6′-diol, and 3,5-diaminobenzoic acid with diamine ratios of 80/20 (Co-80/20) and 50/50 (Co-50/50) are reported. Unexpectedly, the Co-80/20 not only demonstrates higher microporosity (300 m2 g−1) than the PIM-6FDA-OH homopolymer (190 m2 g−1) but also exhibits simultaneously enhanced CO2 permeability (from 119 to 171 Barrer) and CO2/CH4 selectivity (from 35 to 41) after thermal annealing at 250 °C. This higher permeability originates from enhanced diffusivity (D CO2) and the higher selectivity results from its increased diffusion selectivity (D CO2/D CH4). After crosslinking at 300 °C, the Co-80/20 exhibits an even higher CO2 permeability (261 Barrer) and almost unchanged CO2/CH4 selectivity.
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).
dc.language.isoen
dc.publisherWiley
dc.relation.urlhttp://doi.wiley.com/10.1002/marc.201600023
dc.rightsThis is the peer reviewed version of the following article: Ma, X., Mukaddam, M. and Pinnau, I. (2016), Bifunctionalized Intrinsically Microporous Polyimides with Simultaneously Enhanced Gas Permeability and Selectivity. Macromol. Rapid Commun., which has been published in final form at http://doi.wiley.com/10.1002/marc.201600023. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
dc.subjectcrosslinking
dc.subjectgas separation
dc.subjecthydrogen bonding
dc.subjectintrinsic microporous polymers
dc.subjectpolyimides
dc.titleBifunctionalized Intrinsically Microporous Polyimides with Simultaneously Enhanced Gas Permeability and Selectivity
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical and Biological Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalMacromolecular Rapid Communications
dc.eprint.versionPost-print
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personMa, Xiaohua
kaust.personMukaddam, Mohsin Ahmed
kaust.personPinnau, Ingo
refterms.dateFOA2017-03-29T00:00:00Z
dc.date.published-online2016-03-29
dc.date.published-print2016-06


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