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Synthesis and characterization of benzimidazolium-functionalized polysulfones as anion-exchange membranes

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Síntesis y Procesado de Materialeses
dc.contributor.authorPérez Prior, María Teresa
dc.contributor.authorVarez, Alejandro
dc.contributor.authorLevenfeld Laredo, Belén
dc.contributor.funderComunidad de Madrides
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2020-10-15T12:40:29Z
dc.date.available2020-10-15T12:40:29Z
dc.date.issued2015-10-15
dc.description.abstractAnion-exchange membranes containing pendant benzimidazolium groups were synthesized from polysulfone by chrolomethylation followed by nucleophilic substitution reaction with 1-methylbenzimidazole. The structures of the polymers were characterized by H-1-NMR and FTIR analysis. The resulting membranes showed high thermal stability below 200 degrees C. The values of water uptake and swelling degree increased with the ion-exchange capacity of the polymeric membrane. The ionic conductivity was measured by means of impedance spectroscopy in aqueous solution of potassium hydroxide (10(-4)-10(-1) M). The results show not only a clear correlation between the membrane's electrochemical behavior with the electrolyte solution embedded in the membrane, but also with the degree of the polysulfone's chloromethylation.Thus, the ionic conductivity increased more than two orders of magnitude when the degree of chloromethylation increased from 40 to 140%. Benzimidazolium-functionalized polysulfones exhibited better thermal, mechanical, and electrochemical properties than the widely used polymeric membranes containing quaternary ammonium groups.en
dc.description.sponsorshipThis work has been supported by the Projects from the regional government (Comunidad de Madrid through MATERYENER3CM S2013/MIT-2753) and Spanish Government, MINECO (MAT2013‐46452‐C4‐3R).en
dc.format.extent11es
dc.identifier.bibliographicCitationJournal of Polymer Science, Part A: Polymer Chemistry, 53(20), October 2015, Pp. 2363-2373en
dc.identifier.doihttps://doi.org/10.1002/pola.27692
dc.identifier.issn0887-624X
dc.identifier.issn1099-0518 (online)
dc.identifier.publicationfirstpage2363es
dc.identifier.publicationissue20es
dc.identifier.publicationlastpage2373es
dc.identifier.publicationtitleJOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRYen
dc.identifier.publicationvolume53es
dc.identifier.urihttps://hdl.handle.net/10016/31226
dc.identifier.uxxiAR/0000017253
dc.language.isoengen
dc.publisherWiley Periodicals, Inc.en
dc.relation.projectIDGobierno de España. MAT2013‐46452‐C4‐3Res
dc.relation.projectIDComunidad de Madrid. S2013/MIT-2753/MATERYENER3CMes
dc.rights© 2015 Wiley Periodicals, Inc.en
dc.rights.accessRightsopen accessen
dc.subject.ecienciaMaterialeses
dc.subject.otherPolysulfoneen
dc.subject.otherBenzimidazoliumen
dc.subject.otherMembranesen
dc.subject.otherElectrochemistryen
dc.subject.otherConducting polymersen
dc.titleSynthesis and characterization of benzimidazolium-functionalized polysulfones as anion-exchange membranesen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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