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Dispersibility and Emulsion-Stabilizing Effect of Cellulose Nanowhiskers Esterified by Vinyl Acetate and Vinyl Cinnamate

dc.rights.licenseopen
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorSÈBE, Gilles
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorHAM-PICHAVANT, Frédérique
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorPÉCASTAINGS, Gilles
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2013
dc.identifier.issn1525-7797
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20404
dc.description.abstractEnThe surface of cotton cellulose nanowhiskers (CNW's) was esterified by vinyl acetate (VAc) and vinyl cinnamate (VCin), in the presence of potassium carbonate as catalyst. Reactions were performed under microwave activation and monitored by Fourier transform infrared (FT-IR) spectroscopy. The supramolecular structure of CNW's before and after modification was characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM). Distinctively from the acetylation treatment, an increase in particles dimensions was noted after esterification with VCin, which was assigned to pi-pi stacking interactions that may exist between cinnamoyl moieties. The dispersibility and emulsion stabilizing effect of acylated CNW's was examined in ethyl acetate, toluene, and cyclohexane, three organic solvents of medium to low polarity. The acylated nanoparticles could never be dispersed in toluene nor cyclohexane, but they formed stable dispersions in ethyl acetate while remaining dispersible in water. Stable ethyl acetate-in-water, toluene-in-water, and cyclohexane-in-water emulsions were successfully prepared with CNW's grafted with acetyl moieties, whereas the VCin-treated particles could stabilize only the cyclohexane-in-water emulsions. The impact of esterification treatment on emulsion stability and droplets size was particularly discussed.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enDispersibility and Emulsion-Stabilizing Effect of Cellulose Nanowhiskers Esterified by Vinyl Acetate and Vinyl Cinnamate
dc.typeArticle de revue
dc.identifier.doi10.1021/bm400854n
dc.subject.halChimie/Polymères
bordeaux.journalBiomacromolecules
bordeaux.page2937-3944
bordeaux.volume14
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue8
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00916046
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00916046v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Biomacromolecules&rft.date=2013&rft.volume=14&rft.issue=8&rft.spage=2937-3944&rft.epage=2937-3944&rft.eissn=1525-7797&rft.issn=1525-7797&rft.au=S%C3%88BE,%20Gilles&HAM-PICHAVANT,%20Fr%C3%A9d%C3%A9rique&P%C3%89CASTAINGS,%20Gilles&rft.genre=article


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