Publication:
On the Conductivity of Proton-Exchange Membranes Based onMultiblock Copolymers of Sulfonated Polysulfoneand Polyphenylsulfone: An Experimental and Modeling Study

Simple item page
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.authorUreña Torres, María de las Nieves
dc.contributor.authorPérez Prior, María Teresa
dc.contributor.authorLevenfeld Laredo, Belén
dc.contributor.authorGarcía-Salaberri, Pablo A.
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2021-06-04T10:48:33Z
dc.date.available2021-06-04T10:48:33Z
dc.date.issued2021-01-23
dc.description.abstractThe effect of relative humidity (RH) and degree of sulfonation (DS) on the ionic conductivity and water uptake of proton-exchange membranes based on sulfonated multiblock copolymers composed of polysulfone (PSU) and polyphenylsulfone (PPSU) is examined experimentally and numerically. Three membranes with a different and ion-exchange capacity are analyzed. The heterogeneous structure of the membranes shows a random distribution of sulfonated (hydrophilic) and non-sulfonated (hydrophobic) domains, whose proton conductivity is modeled based on percolation theory. The mesoscopic model solves simplified Nernst–Planck and charge conservation equations on a random cubic network. Good agreement is found between the measured ionic conductivity and water uptake and the model predictions. The ionic conductivity increases with RH due to both the growth of the hydrated volume available for conduction and the decrease of the tortuosity of ionic transport pathways. Moreover, the results show that the ionic conductivity increases nonlinearly with , experiencing a strong rise when the is varied from 0.45 to 0.70, even though the water uptake of the membranes remains nearly the same. In contrast, the increase of the ionic conductivity between and is significantly lower, but the water uptake increases sharply. This is explained by the lack of microphase separation of both copolymer blocks when the is exceedingly high. Encouragingly, the copolymer membranes demonstrate a similar performance to Nafion under well hydrated conditions, which can be further optimized by a combination of numerical modeling and experimental characterization to develop new-generation membranes with better properties.en
dc.description.sponsorshipThis work was supported by the Spanish Agencia Estatal de Investigación (PID2019- 106740RB-I00/AEI/10.13039/501100011033, SEIN202000X112247IV0 and PID-2019-106662RB-C43), the Spanish Government MINECO (MAT201678362-C4-3-R) and the project PEM4ENERGY-CMUC3M funded by the call “Programa de apoyo a la realización de proyectos interdisciplinares de I+D para jóvenes investigadores de la Universidad Carlos III de Madrid 2019-2020” under the frame of the “Convenio Plurianual Comunidad de Madrid-Universidad Carlos III de Madrid”.en
dc.format.extent24es
dc.identifier.bibliographicCitationUreña, N., Pérez-Prior, M. T., Levenfeld, B., & García-Salaberri, P. A. (2021). On the Conductivity of Proton-Exchange Membranes Based on Multiblock Copolymers of Sulfonated Polysulfone and Polyphenylsulfone: An Experimental and Modeling Study. Polymers, 13(3), 363en
dc.identifier.doihttps://doi.org/10.3390/polym13030363
dc.identifier.issn2073-4360
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue363
dc.identifier.publicationlastpage24
dc.identifier.publicationtitlePolymersen
dc.identifier.publicationvolume13 (3)
dc.identifier.urihttps://hdl.handle.net/10016/32830
dc.identifier.uxxiAR/0000027957
dc.language.isoengen
dc.publisherMDPIen
dc.relation.projectIDGobierno de España. MAT2016-78362-C4-3-Res
dc.relation.projectIDGobierno de España. PID2019-106662RB-C43es
dc.relation.projectIDGobierno de España. PID2019-106740RB-I00es
dc.rights© 2021 by the authors.es
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accesses
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaMaterialeses
dc.subject.otherIonic conductivityen
dc.subject.otherWater uptakeen
dc.subject.otherMultiblock copolymeren
dc.subject.otherPercolation theoryen
dc.subject.otherModelingen
dc.subject.otherCharacterizationen
dc.subject.otherProton-Exchange Membraneen
dc.titleOn the Conductivity of Proton-Exchange Membranes Based onMultiblock Copolymers of Sulfonated Polysulfoneand Polyphenylsulfone: An Experimental and Modeling Studyen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
conductivity_POLYMERS_2021.pdf
Size:
8.91 MB
Format:
Adobe Portable Document Format
Download
Collections
DCIMIQ - CIMIQ - SPM - Artículos de Revistas