Effect of the Amide Bond Diamine Structure on the CO 2 , H 2 S, and CH 4 Transport Properties of a Series of Novel 6FDA-Based Polyamide–Imides for Natural Gas Purification

Handle URI:
http://hdl.handle.net/10754/598063
Title:
Effect of the Amide Bond Diamine Structure on the CO 2 , H 2 S, and CH 4 Transport Properties of a Series of Novel 6FDA-Based Polyamide–Imides for Natural Gas Purification
Authors:
Vaughn, J.; Koros, W. J.
Abstract:
A series of higher permeability polyamide-imides based on 2,2′-bis(3,4-dicarboxyphenyl) hexafluoropropane dianhydride with comparable plasticization resistance to Torlon were synthesized and formed into dense film membranes. Polymers possessing 2,4-diamino mesitylene (DAM) were stable up to 56 atm of pure CO 2, which is due to enhanced charge transfer complex formation compared to polymers containing 4,4′- (hexafluoroisopropylidene) dianiline (6FpDA) and 2,3,5,6-tetramethyl-1,4- phenylenediamine (TmPDA). The new polymers containing DAM and TmPDA showed ideal CO 2/CH 4 selectivities of near 50 with CO 2 and H 2S permeabilities over an order of magnitude higher than Torlon. CO 2 and CH 4 sorption in the DAM- and TmPDA-based materials was reduced, whereas H 2S sorption was enhanced relative to membranes containing fluorinated 6FpDA. Consequently, DAM- and TmPDA-based membranes showed increased stability toward high pressure CO 2 but lower plasticization resistance toward pure H 2S. These results highlight the differences between CO 2 and H 2S that challenge the rational design of materials targeting simultaneous separation of both contaminants. © 2012 American Chemical Society.
Citation:
Vaughn J, Koros WJ (2012) Effect of the Amide Bond Diamine Structure on the CO 2 , H 2 S, and CH 4 Transport Properties of a Series of Novel 6FDA-Based Polyamide–Imides for Natural Gas Purification . Macromolecules 45: 7036–7049. Available: http://dx.doi.org/10.1021/ma301249x.
Publisher:
American Chemical Society (ACS)
Journal:
Macromolecules
KAUST Grant Number:
KUS-I1-011-21
Issue Date:
11-Sep-2012
DOI:
10.1021/ma301249x
Type:
Article
ISSN:
0024-9297; 1520-5835
Sponsors:
This publication is based on work supported by Award No. KUS-I1-011-21, made by King Abdullah University of Science and Technology (KAUST). The authors would also like to thank Dr. JR Johnson and Dr. Oguz Karvan (Ga. Tech.) for design and construction of the H<INF>2</INF>S systems as well as Megan Lydon (Ga. Tech.) for assistance in the XRD measurements.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorVaughn, J.en
dc.contributor.authorKoros, W. J.en
dc.date.accessioned2016-02-25T13:11:57Zen
dc.date.available2016-02-25T13:11:57Zen
dc.date.issued2012-09-11en
dc.identifier.citationVaughn J, Koros WJ (2012) Effect of the Amide Bond Diamine Structure on the CO 2 , H 2 S, and CH 4 Transport Properties of a Series of Novel 6FDA-Based Polyamide–Imides for Natural Gas Purification . Macromolecules 45: 7036–7049. Available: http://dx.doi.org/10.1021/ma301249x.en
dc.identifier.issn0024-9297en
dc.identifier.issn1520-5835en
dc.identifier.doi10.1021/ma301249xen
dc.identifier.urihttp://hdl.handle.net/10754/598063en
dc.description.abstractA series of higher permeability polyamide-imides based on 2,2′-bis(3,4-dicarboxyphenyl) hexafluoropropane dianhydride with comparable plasticization resistance to Torlon were synthesized and formed into dense film membranes. Polymers possessing 2,4-diamino mesitylene (DAM) were stable up to 56 atm of pure CO 2, which is due to enhanced charge transfer complex formation compared to polymers containing 4,4′- (hexafluoroisopropylidene) dianiline (6FpDA) and 2,3,5,6-tetramethyl-1,4- phenylenediamine (TmPDA). The new polymers containing DAM and TmPDA showed ideal CO 2/CH 4 selectivities of near 50 with CO 2 and H 2S permeabilities over an order of magnitude higher than Torlon. CO 2 and CH 4 sorption in the DAM- and TmPDA-based materials was reduced, whereas H 2S sorption was enhanced relative to membranes containing fluorinated 6FpDA. Consequently, DAM- and TmPDA-based membranes showed increased stability toward high pressure CO 2 but lower plasticization resistance toward pure H 2S. These results highlight the differences between CO 2 and H 2S that challenge the rational design of materials targeting simultaneous separation of both contaminants. © 2012 American Chemical Society.en
dc.description.sponsorshipThis publication is based on work supported by Award No. KUS-I1-011-21, made by King Abdullah University of Science and Technology (KAUST). The authors would also like to thank Dr. JR Johnson and Dr. Oguz Karvan (Ga. Tech.) for design and construction of the H<INF>2</INF>S systems as well as Megan Lydon (Ga. Tech.) for assistance in the XRD measurements.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleEffect of the Amide Bond Diamine Structure on the CO 2 , H 2 S, and CH 4 Transport Properties of a Series of Novel 6FDA-Based Polyamide–Imides for Natural Gas Purificationen
dc.typeArticleen
dc.identifier.journalMacromoleculesen
dc.contributor.institutionGeorgia Institute of Technology, Atlanta, United Statesen
kaust.grant.numberKUS-I1-011-21en
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