Phase inversion method for the preparation of Pebax® 3533 thin film membranes for CO2/N2separation

Thin film composite membranes of poly(ether-block-amide) copolymer Pebax® 3533 were prepared for the first time on asymmetric polysulfone supports by a phase inversion method. The casting solution concentration and the number of layers were varied to study their influence on the selective layer thic...

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Autores: Martínez-Izquierdo L., Malankowska M., Téllez C., Coronas J.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:151989
Acceso en línea:http://zaguan.unizar.es/record/151989
Access Level:acceso abierto
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spelling Phase inversion method for the preparation of Pebax® 3533 thin film membranes for CO2/N2separationMartínez-Izquierdo L.Malankowska M.Téllez C.Coronas J.Thin film composite membranes of poly(ether-block-amide) copolymer Pebax® 3533 were prepared for the first time on asymmetric polysulfone supports by a phase inversion method. The casting solution concentration and the number of layers were varied to study their influence on the selective layer thickness and the gas separation performance. The casting solution concentrations of polymer dissolved in the 1-propanol/1-butanol mixture were 0.25, 0.5, 1.0 and 1.5 wt%. These conditions produced membranes with selective skin layers with thicknesses from 0.2 to 1.8 µm. All the membranes were characterized by scanning electron microscopy, thermogravimetric analysis and infrared spectroscopy. Furthermore, the intrinsic viscosity of all the casting solutions was studied to understand the effect of the polymer concentration on the homogeneity and the gas separation properties of the obtained membranes. In general, lower viscosity of casting solutions rendered to more defective skin layers, resulting in a higher number of layers required to obtain selective membranes. The gas separation performance was tested for the post-combustion 15/85 CO2/N2 mixture at 25-50 °C and under a feed pressure of 3 bar. The best separation performance was achieved with the 0.5 wt% casting solution membranes after the deposition of four polymer layers, obtaining a CO2 permeance of 127 GPU and a CO2/N2 selectivity of 21.4 at 35 °C, the same selectivity of the corresponding dense membrane but with much higher permeance.2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://zaguan.unizar.es/record/151989reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/grantAgreement/ES/DGA-FSE/T43-20Rinfo:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/MAT2016-77290-Rinfo:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/PID2019-104009RB-I00info:eu-repo/semantics/openAccessoai:zaguan.unizar.es:1519892026-05-29T13:59:51Z
dc.title.none.fl_str_mv Phase inversion method for the preparation of Pebax® 3533 thin film membranes for CO2/N2separation
title Phase inversion method for the preparation of Pebax® 3533 thin film membranes for CO2/N2separation
spellingShingle Phase inversion method for the preparation of Pebax® 3533 thin film membranes for CO2/N2separation
Martínez-Izquierdo L.
title_short Phase inversion method for the preparation of Pebax® 3533 thin film membranes for CO2/N2separation
title_full Phase inversion method for the preparation of Pebax® 3533 thin film membranes for CO2/N2separation
title_fullStr Phase inversion method for the preparation of Pebax® 3533 thin film membranes for CO2/N2separation
title_full_unstemmed Phase inversion method for the preparation of Pebax® 3533 thin film membranes for CO2/N2separation
title_sort Phase inversion method for the preparation of Pebax® 3533 thin film membranes for CO2/N2separation
dc.creator.none.fl_str_mv Martínez-Izquierdo L.
Malankowska M.
Téllez C.
Coronas J.
author Martínez-Izquierdo L.
author_facet Martínez-Izquierdo L.
Malankowska M.
Téllez C.
Coronas J.
author_role author
author2 Malankowska M.
Téllez C.
Coronas J.
author2_role author
author
author
description Thin film composite membranes of poly(ether-block-amide) copolymer Pebax® 3533 were prepared for the first time on asymmetric polysulfone supports by a phase inversion method. The casting solution concentration and the number of layers were varied to study their influence on the selective layer thickness and the gas separation performance. The casting solution concentrations of polymer dissolved in the 1-propanol/1-butanol mixture were 0.25, 0.5, 1.0 and 1.5 wt%. These conditions produced membranes with selective skin layers with thicknesses from 0.2 to 1.8 µm. All the membranes were characterized by scanning electron microscopy, thermogravimetric analysis and infrared spectroscopy. Furthermore, the intrinsic viscosity of all the casting solutions was studied to understand the effect of the polymer concentration on the homogeneity and the gas separation properties of the obtained membranes. In general, lower viscosity of casting solutions rendered to more defective skin layers, resulting in a higher number of layers required to obtain selective membranes. The gas separation performance was tested for the post-combustion 15/85 CO2/N2 mixture at 25-50 °C and under a feed pressure of 3 bar. The best separation performance was achieved with the 0.5 wt% casting solution membranes after the deposition of four polymer layers, obtaining a CO2 permeance of 127 GPU and a CO2/N2 selectivity of 21.4 at 35 °C, the same selectivity of the corresponding dense membrane but with much higher permeance.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://zaguan.unizar.es/record/151989
url http://zaguan.unizar.es/record/151989
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/ES/DGA-FSE/T43-20R
info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/MAT2016-77290-R
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dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
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