Polyvinyl alcohol/multi-walled carbon nanotubes nanocomposites with ordered macroporous structures prepared by ice-templating

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dc.creatorRaul Guimarães
dc.creatorMiguel Leite Lapér
dc.creatorVinícius Gomide de Castro
dc.creatorGlaura Goulart Silva
dc.creatorLudmila Gonçalves de Oliveira Xavier
dc.creatorTulio Matencio
dc.creatorManuel Noel Paul Georges Houmard
dc.creatorEduardo Henrique Martins Nunes
dc.date.accessioned2023-09-14T18:26:14Z
dc.date.accessioned2025-09-08T22:53:20Z
dc.date.available2023-09-14T18:26:14Z
dc.date.issued2021
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1002/app.49837
dc.identifier.issn1097-4628
dc.identifier.urihttps://hdl.handle.net/1843/58671
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Applied Polymer Science
dc.rightsAcesso Restrito
dc.subjectEletroquímica
dc.subjectCompósitos poliméricos
dc.subjectFulerenos
dc.subjectGrafeno
dc.subjectPropriedades mecânicas
dc.subjectNanotubos de carbono
dc.subjectMateriais porosos
dc.subject.otherComposites
dc.subject.otherElectrochemistry
dc.subject.otherFullerenes
dc.subject.otherGraphene
dc.subject.otherMechanical properties
dc.subject.otherNanotubes
dc.subject.otherPorous materials
dc.titlePolyvinyl alcohol/multi-walled carbon nanotubes nanocomposites with ordered macroporous structures prepared by ice-templating
dc.typeArtigo de periódico
local.citation.issue7
local.citation.volume138
local.description.resumoWe demonstrate in this study that it is possible to prepare three-dimensionally ordered macroporous polymer structures by ice-templating. Polyvinyl alcohol (PVA) was used as a model system in this study, but the processing route proposed here can be applied to other polymer systems. Multi-walled carbon nanotubes (MWCNTs) were incorporated into the PVA matrix at concentrations up to 12 wt% to investigate the influence of this addition on the mechanical and electrical properties of the obtained scaffolds. Different freezing routes were used, namely unidirectional, radial, and bidirectional freezing. The addition of MWCNTs had a strengthening effect on the scaffolds, especially when added at loadings around 2 wt%. Samples prepared by unidirectional freezing displayed larger mechanical stability, but materials derived from radial and bidirectional freezing showed a higher electrical conductivity. The obtained materials exhibited apparent porosity above 85%, which can be of great interest in many applications.
local.identifier.orcidhttps://orcid.org/0000-0003-2655-6595
local.identifier.orcidhttps://orcid.org/0000-0002-0308-0179
local.identifier.orcidhttps://orcid.org/0000-0002-5660-8125
local.identifier.orcidhttps://orcid.org/0000-0002-1543-5416
local.identifier.orcidhttps://orcid.org/0000-0001-6653-5137
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA METALÚRGICA
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA QUÍMICA
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://onlinelibrary.wiley.com/doi/10.1002/app.49837

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