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Monitoring surface properties evolution of thermochemically modified cellulose nanofibres from banana pseudo-stem

2012Journal article Open access
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dc.contributor.authorCordeiro, N.
dc.contributor.authorMendonça, C.
dc.contributor.authorPothan, L.A.
dc.contributor.authorVarma, A.
dc.date.accessioned2021-05-03T15:17:44Z
dc.date.available2021-05-03T15:17:44Z
dc.date.issued2012
dc.description.abstractThe effect of steam explosion coupled with chemical treatment, on the surface properties of banana fibres obtained from the pseudo-stem of banana plant Musa sapientum was studied in detail by inverse gas chromatography (IGC). IGC experiments were performed in banana fibres from macro to nano stages at 293, 298 and 303 K. The analyzed fibres showed dispersive component of the surface energy between 39.59 and 48.03 mJ/m2, at 298 K. The interaction between the fibres and the high and low DN/AN* probes indicate the presence of both acidic and basic active sites on the fibres surface. The values of Ka and Kb suggest that predominantly basic active sites are involved in the specific adsorption process in the nanofi bres. During the thermochemical treatment, changes occur in the arrangement of macromolecular chains with the reduction of dispersive groups and the increase in some polar groups. This susceptibility of the surface to change its acid–base characteristics combined with a change in dispersive properties enhance the possibility of specific intermolecular interactions with different solvents, plasticizers, polymers or fillers, which is important to the practical applications of the nanofibres.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCordeiro, N., Mendonça, C., Pothan, L. A., & Varma, A. (2012). Monitoring surface properties evolution of thermochemically modified cellulose nanofibres from banana pseudo-stem. Carbohydrate polymers, 88(1), 125-131.pt_PT
dc.identifier.doi10.1016/j.carbpol.2011.11.077pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3350
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCellulose nanofibrespt_PT
dc.subjectInverse gas chromatographypt_PT
dc.subjectBanana fibrespt_PT
dc.subjectSurface characteristicspt_PT
dc.subjectThermochemical modificationpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleMonitoring surface properties evolution of thermochemically modified cellulose nanofibres from banana pseudo-stempt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage131pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage125pt_PT
oaire.citation.titleCarbohydrate Polymerspt_PT
oaire.citation.volume88pt_PT
person.familyNamecordeiro
person.givenNamenereida
person.identifier1612636
person.identifier.ciencia-id521A-0F62-EA39
person.identifier.orcid0000-0001-6006-3415
person.identifier.ridO-2253-2019
person.identifier.scopus-author-id7004319456
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication3d02b657-c48c-4f56-813a-1284b81960f3
relation.isAuthorOfPublication.latestForDiscovery3d02b657-c48c-4f56-813a-1284b81960f3

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