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Effect of the dispersion state of minerals on the properties of cellulose nanofiber-based composite films

2023-03Journal article Open access
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dc.contributor.authorAlves, Luís
dc.contributor.authorRamos, Ana
dc.contributor.authorFerraz, Eduardo
dc.contributor.authorSanguino, Pedro
dc.contributor.authorSantaren, Julio
dc.contributor.authorRasteiro, Maria Graça
dc.contributor.authorGamelas, José AF
dc.date.accessioned2023-01-25T19:50:31Z
dc.date.available2023-01-25T19:50:31Z
dc.date.issued2023-03
dc.date.updated2023-01-25T10:38:53Z
dc.description.abstractThe dispersion state and the efficiency of the mixture of the different components in a composite film have an important impact on its mechanical and optical properties. In the present work, the impacts of different dispersion treatments on the disaggregation state of fibrous clay particles in water, and on the properties of related cellulose nanofiber (CNF)-based composite films, were evaluated. X-ray diffraction studies, performed on samples of sepiolite and palygorskite, revealed only minor changes in the diffraction pattern when the minerals were subjected to ultrasonic treatment, with or without the addition of different chemical dispersing agents. Conversely, microscopic studies revealed important differences in the dispersion state of the samples, induced by the addition of the different dispersants, showing an improvement in the disaggregation of the mineral crystals. The composite films prepared with sepiolite (and carboxymethylcellulose, as chemical dispersant) dispersed using ultrasonic treatment, and different types of CNF, showed improved optical and mechanical properties when compared with composites of the same counterparts prepared with sepiolite dispersed using a high-speed shear disperser.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doihttps://doi.org/10.1016/j.clay.2023.106823pt_PT
dc.identifier.issn0169-1317
dc.identifier.slugcv-prod-3126826
dc.identifier.urihttp://hdl.handle.net/10400.26/43363
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationTechnology, Restoration and Arts Enhancement Center
dc.relationNew generation of composite films of cellulose nanofibrils with mineral particles as high strength materials with gas barrier properties
dc.relationChemical Process Engineering and Forest Products Research Centre
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0169131723000108pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectTransmission electron microscopypt_PT
dc.subjectClay dispersionpt_PT
dc.subjectCompositespt_PT
dc.subjectCellulose nanofibrilspt_PT
dc.subjectTransparencypt_PT
dc.subjectClay mineralspt_PT
dc.titleEffect of the dispersion state of minerals on the properties of cellulose nanofiber-based composite filmspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleTechnology, Restoration and Arts Enhancement Center
oaire.awardTitleNew generation of composite films of cellulose nanofibrils with mineral particles as high strength materials with gas barrier properties
oaire.awardTitleChemical Process Engineering and Forest Products Research Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F05488%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FQUI-OUT%2F31884%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00102%2F2020/PT
oaire.citation.endPage106823pt_PT
oaire.citation.titleApplied Clay Sciencept_PT
oaire.citation.volume233pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream9471 - RIDTI
oaire.fundingStream6817 - DCRRNI ID
person.familyNameFerraz
person.givenNameEduardo
person.identifier.ciencia-idC517-A240-7C81
person.identifier.orcid0000-0003-4717-6305
person.identifier.ridB-7140-2014
person.identifier.scopus-author-id7003480912
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.cv.cienciaidC517-A240-7C81 | Eduardo Jorge Marques de Oliveira Ferraz
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscovery94c2590f-fd7a-44e1-b6cd-31297c9da934
relation.isProjectOfPublicationf54f4364-bd3a-49ed-b1d2-bf89e845d339
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