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Cellulose-stabilized oil-in-water emulsions: structural features, microrheology, and stability

2021Journal article Open access
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dc.contributor.authorCosta, Carolina
dc.contributor.authorRosa, Pedro
dc.contributor.authorFilipe, Alexandra
dc.contributor.authorMedronho, Bruno
dc.contributor.authorRomano, Anabela
dc.contributor.authorLiberman, Lucy
dc.contributor.authorTalmon, Yeshayahu
dc.contributor.authorNorgren, Magnus
dc.date.accessioned2021-01-15T17:45:55Z
dc.date.available2021-01-15T17:45:55Z
dc.date.issued2021
dc.description.abstractCellulose-based oil-in-water (O/W) emulsions were studied by diffusing wave spectroscopy (DWS) regarding the effect of the cellulose concentration and mixing rate on the average droplet size, microrheological features and stability. Furthermore, the microstructure of these emulsions was imaged by cryo-scanning electron microscopy (cryo-SEM). The micrographs showed that cellulose was effectively adsorbed at the oil-water interface, resembling a film-like shell that protected the oil droplets from coalescing. The non-adsorbed cellulose that was observed in the continuous aqueous medium, contributed to the enhancement of the viscosity of the medium, leading to an improvement in the stability of the overall system. Generally, the higher the cellulose concentration and mixing rate, the smaller the emulsion droplets formed, and the higher was their stability. The combination of both techniques, DWS and cryo-SEM, revealed a very appealing and robust methodology for the characterization and design of novel emulsion-based formulations.pt_PT
dc.description.sponsorshipFCT: PTDC/ASP-SIL/30619/2017, UIDB/05183/2020 / CEECIND/01014/2018pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.carbpol.2020.117092pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.1/14969
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDiffusing wave spectroscopypt_PT
dc.subjectCryo-scanning electron microscopypt_PT
dc.subjectCellulose;pt_PT
dc.subjectEmulsionspt_PT
dc.subjectMicrorheologypt_PT
dc.titleCellulose-stabilized oil-in-water emulsions: structural features, microrheology, and stabilitypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage117092pt_PT
oaire.citation.titleCarbohydrate Polymerspt_PT
oaire.citation.volume252pt_PT
person.familyNameMedronho
person.familyNameRomano
person.givenNameBruno
person.givenNameAnabela
person.identifier.ciencia-id6918-9AB3-8D22
person.identifier.ciencia-id8A18-7E9A-3B0E
person.identifier.orcid0000-0003-0972-1739
person.identifier.orcid0000-0002-7204-7428
person.identifier.ridP-5927-2014
person.identifier.scopus-author-id9940656700
person.identifier.scopus-author-id56249997600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication4c03571a-93da-4504-8acf-c74326449852
relation.isAuthorOfPublicatione3343b60-17d3-4f5e-a2bf-06f26da69206
relation.isAuthorOfPublication.latestForDiscoverye3343b60-17d3-4f5e-a2bf-06f26da69206

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