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Investigation of surface properties of physico-chemically modified natural fibres using inverse gas chromatography

2011Journal article Open access
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dc.contributor.authorCordeiro, N.
dc.contributor.authorGouveia, C.
dc.contributor.authorJohn, M. Jacob
dc.date.accessioned2023-04-26T14:10:42Z
dc.date.available2023-04-26T14:10:42Z
dc.date.issued2011
dc.description.abstractInverse gas chromatography (IGC) is a suitable method to determine surface energy of natural fibres when compared to wetting techniques. In the present study, the surface properties of raw and modified lignocellulosic fibres have been investigated by IGC. The fibres chosen for the study were flax, hemp, kenaf, agave, agave hybrid, sisal and pineapple. The treatments used were 4% NaOH and 2% zein. The uniqueness of zein treatment is that it is bio-based and therefore maintains the biodegradable character of the natural fibres. Fourier transform infrared spectroscopy (FTIR) and environmental scanning electron microscope (ESEM) were also performed to characterize the surface changes in fibres. The surface properties of fibres are influenced by the chemical composition, crystallinity and morphology of the fibres. Bast fibres exhibited higher surface dispersive energy than leaf fibres. The raw fibres have a predominant basic character, whereas the alkaline treatment makes the fibres more acidic. Both alkaline and zein treatments decrease the dispersive surface energy and the specific free energy of adsorption.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCordeiro, N., Gouveia, C., & John, M. J. (2011). Investigation of surface properties of physico-chemically modified natural fibres using inverse gas chromatography. Industrial Crops and Products, 33(1), 108-115.pt_PT
dc.identifier.doi10.1016/j.indcrop.2010.09.008pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/5144
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectNatural fibrespt_PT
dc.subjectFibres modificationpt_PT
dc.subjectAlkaline treatmentpt_PT
dc.subjectZein treatmentpt_PT
dc.subjectInverse gas chromatographypt_PT
dc.subjectSurface propertiespt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleInvestigation of surface properties of physico-chemically modified natural fibres using inverse gas chromatographypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage115pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage108pt_PT
oaire.citation.titleIndustrial Crops and Productspt_PT
oaire.citation.volume33pt_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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