Gas separation performance of 6FDA-based polyimides with different chemical structures

Handle URI:
http://hdl.handle.net/10754/598395
Title:
Gas separation performance of 6FDA-based polyimides with different chemical structures
Authors:
Qiu, Wulin; Xu, Liren; Chen, Chien-Chiang; Paul, Donald R.; Koros, William J.
Abstract:
This work reports the gas separation performance of several 6FDA-based polyimides with different chemical structures, to correlate chemical structure with gas transport properties with a special focus on CO2 and CH 4 transport and plasticization stability of the polyimides membranes relevant to natural gas purification. The consideration of the other gases (He, O2 and N2) provided additional insights regarding effects of backbone structure on detailed penetrant properties. The polyimides studied include 6FDA-DAM, 6FDA-mPDA, 6FDA-DABA, 6FDA-DAM:DABA (3:2), 6FDA-DAM:mPDA (3:2) and 6FDA-mPDA:DABA (3:2). Both pure and binary gas permeation were investigated. The packing density, which is tunable by adjusting monomer type and composition of the various samples, correlated with transport permeability and selectivity. The separation performance of the polyimides for various gas pairs were also plotted for comparison to the upper bound curves, and it was found that this family of materials shows attractive performance. The CO 2 plasticization responses for the un-cross-linked polyimides showed good plasticization resistance to CO2/CH4 mixed gas with 10% CO2; however, only the cross-linked polyimides showed good plasticization resistance under aggressive gas feed conditions (CO 2/CH4 mixed gas with 50% CO2 or pure CO 2). For future work, asymmetric hollow fibers and carbon molecular sieve membranes based on the most attractive members of the family will be considered. © 2013 Elsevier Ltd. All rights reserved.
Citation:
Qiu W, Xu L, Chen C-C, Paul DR, Koros WJ (2013) Gas separation performance of 6FDA-based polyimides with different chemical structures. Polymer 54: 6226–6235. Available: http://dx.doi.org/10.1016/j.polymer.2013.09.007.
Publisher:
Elsevier BV
Journal:
Polymer
KAUST Grant Number:
KUS-I1-011-21
Issue Date:
Oct-2013
DOI:
10.1016/j.polymer.2013.09.007
Type:
Article
ISSN:
0032-3861
Sponsors:
This research was supported by the U.S. Department of Energy Grant DE-FG02-04ER15510, and was supported in part by Award No. KUS-I1-011-21, made by King Abdullah University of Science and Technology (KAUST).
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Full metadata record

DC FieldValue Language
dc.contributor.authorQiu, Wulinen
dc.contributor.authorXu, Lirenen
dc.contributor.authorChen, Chien-Chiangen
dc.contributor.authorPaul, Donald R.en
dc.contributor.authorKoros, William J.en
dc.date.accessioned2016-02-25T13:19:59Zen
dc.date.available2016-02-25T13:19:59Zen
dc.date.issued2013-10en
dc.identifier.citationQiu W, Xu L, Chen C-C, Paul DR, Koros WJ (2013) Gas separation performance of 6FDA-based polyimides with different chemical structures. Polymer 54: 6226–6235. Available: http://dx.doi.org/10.1016/j.polymer.2013.09.007.en
dc.identifier.issn0032-3861en
dc.identifier.doi10.1016/j.polymer.2013.09.007en
dc.identifier.urihttp://hdl.handle.net/10754/598395en
dc.description.abstractThis work reports the gas separation performance of several 6FDA-based polyimides with different chemical structures, to correlate chemical structure with gas transport properties with a special focus on CO2 and CH 4 transport and plasticization stability of the polyimides membranes relevant to natural gas purification. The consideration of the other gases (He, O2 and N2) provided additional insights regarding effects of backbone structure on detailed penetrant properties. The polyimides studied include 6FDA-DAM, 6FDA-mPDA, 6FDA-DABA, 6FDA-DAM:DABA (3:2), 6FDA-DAM:mPDA (3:2) and 6FDA-mPDA:DABA (3:2). Both pure and binary gas permeation were investigated. The packing density, which is tunable by adjusting monomer type and composition of the various samples, correlated with transport permeability and selectivity. The separation performance of the polyimides for various gas pairs were also plotted for comparison to the upper bound curves, and it was found that this family of materials shows attractive performance. The CO 2 plasticization responses for the un-cross-linked polyimides showed good plasticization resistance to CO2/CH4 mixed gas with 10% CO2; however, only the cross-linked polyimides showed good plasticization resistance under aggressive gas feed conditions (CO 2/CH4 mixed gas with 50% CO2 or pure CO 2). For future work, asymmetric hollow fibers and carbon molecular sieve membranes based on the most attractive members of the family will be considered. © 2013 Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipThis research was supported by the U.S. Department of Energy Grant DE-FG02-04ER15510, and was supported in part by Award No. KUS-I1-011-21, made by King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectChemical structureen
dc.subjectGas separationen
dc.subjectPolyimide membraneen
dc.titleGas separation performance of 6FDA-based polyimides with different chemical structuresen
dc.typeArticleen
dc.identifier.journalPolymeren
dc.contributor.institutionGeorgia Institute of Technology, Atlanta, United Statesen
dc.contributor.institutionUniversity of Texas at Austin, Austin, United Statesen
kaust.grant.numberKUS-I1-011-21en
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