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dc.contributor.authorAbbasi, Hooman
dc.contributor.authorAntunes, Marcelo de Sousa Pais
dc.contributor.authorVelasco Perero, José Ignacio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.date.accessioned2018-10-24T11:08:30Z
dc.date.available2019-09-19T00:26:03Z
dc.date.issued2018-09-19
dc.identifier.citationAbbasi, H., De Sousa Pais, M., V. J. Enhancing the electrical conductivity of polyetherimide-based foams by simultaneously increasing the porosity and graphene nanoplatelets dispersion. "Polymer composites", 2019, vol. 40, S2 Special Issue: Graphene and Carbon Fibers, p. E1416-E1425.
dc.identifier.issn0272-8397
dc.identifier.urihttp://hdl.handle.net/2117/122919
dc.description.abstractSignificant improvement in electrical conductivity of graphene nanoplatelets-filled polyetherimide (PEI) foams was achieved by simultaneously increasing the porosity and graphene nanoplatelets dispersion. Foams were prepared by means of water vapor-induced phase separation using a concentration of graphene nanoplatelets (GnP) between 1 and 10 wt%. To obtain two sets of foams having different density and porosity, PEI's concentration in N-methyl pyrrolidone (NMP) solvent prior to foaming was set at 15 and 25–30 wt%, respectively. High-power sonication was applied to GnP-NMP suspension before PEI's addition for the foam series with higher porosity (15 wt% PEI). All foams were later characterized in terms of cellular structure, thermal stability, dynamic-mechanical properties, and electrical conductivity. A notable enhancement in electrical conductivity was observed with foaming, especially when increasing the porosity and applying sonication, with foams reaching values as high as 1.7 × 10-1 S/m while maintaining the thermal stability and mechanical performance
dc.format.extent10 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshFoam
dc.subject.lcshNanocomposites (Materials)
dc.subject.lcshMaterials--Research
dc.subject.lcshComposite materials
dc.subject.otherFoams
dc.subject.otherNanocomposites
dc.subject.otherStructure-property relations
dc.titleEnhancing the electrical conductivity of polyetherimide-based foams by simultaneously increasing the porosity and graphene nanoplatelets dispersion
dc.typeArticle
dc.subject.lemacNanocompòsits (Materials)
dc.subject.lemacEscumes
dc.subject.lemacMaterials compostos -- Estructures i propietats
dc.contributor.groupUniversitat Politècnica de Catalunya. POLY2 - Polyfunctional polymeric materials
dc.identifier.doi10.1002/pc.25029
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/10.1002/pc.25029
dc.rights.accessOpen Access
local.identifier.drac23428888
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2017-89787-P/ES/ESPUMAS POLIMERICAS MULTIFUNCIONALES BASADAS EN TERMOPLASTICOS DE ALTA TEMPERATURA/
local.citation.authorAbbasi, H.; De Sousa Pais, M.; Velasco, J.I.
local.citation.publicationNamePolymer composites
local.citation.volume40
local.citation.numberS2 Special Issue: Graphene and Carbon Fibers
local.citation.startingPageE1416
local.citation.endingPageE1425


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