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dc.contributor.authorEsteban Hernández, Isabel Noelia
dc.contributor.authorJuan y Seva Martínez, Marta
dc.contributor.authorAguilar Lugo, Carla
dc.contributor.authorMiguel García, Jesús Ángel 
dc.contributor.authorStaudt, Claudia
dc.contributor.authorCampa, José G. de la
dc.contributor.authorÁlvarez, Cristina
dc.contributor.authorLozano, Ángel E.
dc.date.accessioned2023-04-25T07:27:03Z
dc.date.available2023-04-25T07:27:03Z
dc.date.issued2022
dc.identifier.citationPolymers, 2022, Vol. 14, Nº. 24, 5517es
dc.identifier.issn2073-4360es
dc.identifier.urihttps://uvadoc.uva.es/handle/10324/59310
dc.descriptionProducción Científicaes
dc.description.abstractA set of aromatic copolyimides was obtained by reaction of 4,4′-(hexafluoroisopropylidene) diphthalic anhydride (6FDA), and mixtures of the diamines 1,4-bis(4-amino-2-trifluoromethylphenoxy)-2,5-di-tert-butylbenzene (CF3TBAPB) and 3,5-diamino benzoic acid (DABA). These polymers were characterized and compared with the homopolymer derived from 6FDA and CF3TBAPB. All copolyimides showed high molecular weight values and good mechanical properties. The presence of carboxylic groups in these copolymers allowed their chemical crosslinking by reaction with 1,4-butanediol. Glass transition temperatures (Tg) were higher than 260 °C, showing the non-crosslinked copolyimides had the highest Tg values. Degradation temperature of crosslinked copolyimides was lower than their corresponding non-crosslinked ones. Mechanical properties of all polymers were good, and thus, copolyimide (precursor, and crosslinked ones) films could be tested as gas separation membranes. It was observed that CO2 permeability values were around 100 barrer. Finally, the plasticization resistance of the crosslinked material having a large number of carboxylic groups was excellent.es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.publisherMDPIes
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectPolymerses
dc.subjectPolímeros y polimerizaciónes
dc.subjectPolyimideses
dc.subjectStrength of materialses
dc.subjectResistencia de los materialeses
dc.subjectGases - Separationes
dc.subject.classificationPlasticization resistancees
dc.titleAromatic polyimide membranes with tert-butyl and carboxylic side groups for gas separation applications—covalent crosslinking studyes
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.holder© 2022 The Authorses
dc.identifier.doi10.3390/polym14245517es
dc.relation.publisherversionhttps://www.mdpi.com/2073-4360/14/24/5517es
dc.identifier.publicationfirstpage5517es
dc.identifier.publicationissue24es
dc.identifier.publicationtitlePolymerses
dc.identifier.publicationvolume14es
dc.peerreviewedSIes
dc.description.projectGobierno de España (Agencia Estatal de Investigación), Unión Europea y Fondo Europeo de Desarrollo Regional (FEDER) - (Projects PID2019-109403RB-C22, PID2019-109403RB-C21 and PID2020- 118547GB-I00)es
dc.description.projectJunta de Castilla y León - (Project VA224P20)es
dc.identifier.essn2073-4360es
dc.rightsAtribución 4.0 Internacional*
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones


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