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dc.contributor.authorTena Matías, Alberto
dc.contributor.authorViuda, Mónica de la
dc.contributor.authorPalacio Martínez, Laura 
dc.contributor.authorPrádanos del Pico, Pedro Lourdes 
dc.contributor.authorMarcos Fernández, Ángel
dc.contributor.authorLozano, Ángel E.
dc.contributor.authorHernández Giménez, Antonio 
dc.date.accessioned2016-12-22T08:47:42Z
dc.date.available2016-12-22T08:47:42Z
dc.date.issued2014
dc.identifier.citationJournal of Membrane Science, 2014,vol. 453, p. 27–35es
dc.identifier.issn0376-7388es
dc.identifier.urihttp://uvadoc.uva.es/handle/10324/21895
dc.descriptionProducción Científicaes
dc.description.abstractA complete series of aliphatic aromatic copoly(ether-imide)s, based on aromatic dianhydrides (BPDA, BKDA or PMDA) and mixtures of an aromatic diamine (ODA) and an aliphatic diamine terminated poly(ethylene oxide) PEO(2000) (Mw=2000 g/mol) or PEO(6000) (Mw= 6000 g/mol), has been synthesized using different PEO contents. Cast films of these copolymers have been thermally treated to ensure the segregation of the linear PEO chains from the aromatic portion of these copoly(ether-imide)s. Gas permeability (O2, N2, CO2 and CH4) of membranes, made from these copolymers with different proportions of PEO, were compared with the predictions of various electrical or thermal conductivity models adapted to gas permeability. Several of these models, from Maxwell-Garnett to percolation theory, proved to be inaccurate. Nevertheless, the model based on the Effective Medium Approximation (EMA) is proved here to succeed in predicting the main features of the experimental results for all mixture proportions, taking as the starting point the sole input of pure homopolymer permeabilities. Specifically, this later method was able to calculate the volume fraction for the maximum increase of permeability, a common feature for all the studied segregated copolymer membranes. The model was even able to predict the permeabilities of a three phase system consisting in the aromatic (BKDA-ODA) phase plus a mixture of amorphous PEO(6000) and crystalline PEO(6000).es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.publisherElsevieres
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectCopoly(ether-imide) membranees
dc.subjectPhase segregationes
dc.subjectThermal treatmentes
dc.subjectGas separationes
dc.subjectEffective Medium Approximationes
dc.subjectPercolationes
dc.titlePrediction of gas permeability of block-segregated polymeric membranes by an effective medium modeles
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doi10.1016/j.memsci.2013.10.023es
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0376738813008247es
dc.peerreviewedSIes
dc.description.projectJunta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. VA302U13)es
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International


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