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dc.contributor.authorGenduso, Giuseppe
dc.contributor.authorGhanem, Bader
dc.contributor.authorWang, Yingge
dc.contributor.authorPinnau, Ingo
dc.date.accessioned2019-02-27T09:00:17Z
dc.date.available2019-02-27T09:00:17Z
dc.date.issued2019-02-19
dc.identifier.citationGenduso G, Ghanem B, Wang Y, Pinnau I (2019) Synthesis and Gas-Permeation Characterization of a Novel High-Surface Area Polyamide Derived from 1,3,6,8-Tetramethyl-2,7-diaminotriptycene: Towards Polyamides of Intrinsic Microporosity (PIM-PAs). Polymers 11: 361. Available: http://dx.doi.org/10.3390/polym11020361.
dc.identifier.issn2073-4360
dc.identifier.doi10.3390/polym11020361
dc.identifier.urihttp://hdl.handle.net/10754/631203
dc.description.abstractA triptycene-based diamine, 1,3,6,8-tetramethyl-2,7-diamino-triptycene (TMDAT), was used for the synthesis of a novel solution-processable polyamide obtained via polycondensation reaction with 4,4′-(hexafluoroisopropylidene)bis(benzoic acid) (6FBBA). Molecular simulations confirmed that the tetrasubstitution with ortho-methyl groups in the triptycene building block reduced rotations around the C–N bond of the amide group leading to enhanced fractional free volume. Based on N2 sorption at 77 K, 6FBBA-TMDAT revealed microporosity with a Brunauer–Emmett–Teller (BET) surface area of 396 m2 g−1; to date, this is the highest value reported for a linear polyamide. The aged 6FBBA-TMDAT sample showed moderate pure-gas permeabilities (e.g., 198 barrer for H2, ~109 for CO2, and ~25 for O2) and permselectivities (e.g., αH2/CH4 of ~50) that position this polyamide close to the 2008 H2/CH4 and H2/N2 upper bounds. CO2–CH4 mixed-gas permeability experiments at 35 °C demonstrated poor plasticization resistance; mixed-gas permselectivity negatively deviated from the pure-gas values likely, due to the enhancement of CH4 diffusion induced by mixing effects.
dc.description.sponsorshipThis work was supported by funding (BAS/1/1323-01-01) from King Abdullah University of Science and Technology (KAUST).
dc.publisherMDPI AG
dc.relation.urlhttps://www.mdpi.com/2073-4360/11/2/361
dc.rightsThis is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjecttriptycene diamine
dc.subjectglassy polymers
dc.subjectpolyamides
dc.subjectPIM-polyamides
dc.subjectgas separation
dc.subjectmixed-gas permeation
dc.subjectgas sorption
dc.subjectintrinsic microporosity
dc.titleSynthesis and Gas-Permeation Characterization of a Novel High-Surface Area Polyamide Derived from 1,3,6,8-Tetramethyl-2,7-diaminotriptycene: Towards Polyamides of Intrinsic Microporosity (PIM-PAs)
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalPolymers
dc.eprint.versionPublisher's Version/PDF
kaust.personGenduso, Giuseppe
kaust.personGhanem, Bader
kaust.personWang, Yingge
kaust.personPinnau, Ingo
kaust.grant.numberBAS/1/1323-01-01
refterms.dateFOA2019-02-27T15:03:33Z


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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
Except where otherwise noted, this item's license is described as This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).