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Synthesis and Characterization of Ultrahigh Ion-Exchange Capacity Polymeric Membranes
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymer Technology. Sichuan University, China.
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2016 (English)In: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 55, no 36, 9667-9675 p.Article in journal (Refereed) Published
Abstract [en]

A universal mold casting approach for the preparation of cation-exchange membranes (CEMs) and anion-exchange membranes (AEMs) with ultrahigh ion-exchange capacities (IECs) is developed based on in situ cross-linking polymerization of acrylic acid (AA) and 2-vinylpyridine (2VP), respectively. This new method produced ultrahigh IECs of 7.88 mequiv g(-1) for CEM and 6.27 mequiv g(-1) for AEM, which are 8.8 and 7.0 times that (0.89 mequiv g(-1)) of Nafion 117, respectively. Also, the prepared membranes demonstrate excellent thermal and chemical stability and acceptable conductivity. As a consequence, the membranes show relatively high performance for ion-exchange application and methanol barrier, exhibiting ion permeabilities of 2.06 x 10(-7) cm(2) s(-1) for Na+, 2.57 x 10(-7) cm(2) s(-1) for Ca2+, 1.45 x 10(-7) cm(2) s(-1) for Cu2+ regarding CEMs, and 7.72 x 10(-7) cm(2) s(-1) for methanol regarding AEMs. These results indicate that the CEMs and AEMs fabricated from the universal mold casting approach are promising candidates for targeting ultrahigh ion-exchange capacity membranes.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2016. Vol. 55, no 36, 9667-9675 p.
Keyword [en]
Chemical stability, Ion exchange membranes, Ions, Membranes, Methanol, Molds, Polyvinyl alcohols, Anion exchange membrane, Cation exchange membranes, Ion exchange capacity, Ion permeability, Methanol barriers, Situ cross-linking, Synthesis and characterizations, Thermal and chemical stabilities
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-193996DOI: 10.1021/acs.iecr.6b02770ISI: 000383409700013ScopusID: 2-s2.0-84987786633OAI: diva2:1037644

QC 20161017

Available from: 2016-10-17 Created: 2016-10-14 Last updated: 2016-10-17Bibliographically approved

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