Afficher la notice abrégée

One step generation of single-core double emulsions from polymer-osmose-induced aqueous phase separation in polar oil droplets

hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorDOULIEZ, Jean-Paul
hal.structure.identifierInstitut de Physique de Rennes [IPR]
dc.contributor.authorARLAUT, Anais
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorBEVEN, Laure
hal.structure.identifierUnité Matériaux et Transformations - UMR 8207 [UMET]
dc.contributor.authorFAMEAU, Anne-Laure
hal.structure.identifierInstitut de Physique de Rennes [IPR]
dc.contributor.authorSAINT-JALMES, Arnaud
dc.date.issued2023
dc.identifier.issn1744-683X
dc.description.abstractEnWater-in-oil-in-water emulsions (W/O/W) are aqueous droplet(s) embedded within oil droplets dispersed in a continuous water phase. They are attracting interest due to their possible applications from cosmetic to food science since both hydrosoluble and liposoluble cargos can be encapsulated within. They are generally prepared using a one-step or a two-step method, phase inversion and also via spontaneous emulsification. Here, we describe a general and simple one-step method based on hydrophilic polymers dispersed in polar oils to generate osmose-induced diffusion of water into oil droplets, forming polymer-rich aqueous droplets inside the oil droplets. Polyethylene glycol, but also other hydrophilic polymers (branched polyethylene imine or polyvinyl pyrrolidone) were successfully dispersed in 1-octanol or other polar oils (oleic acid or tributyrin) to produce an O/W emulsion that spontaneously transformed into a W1/O/W2 emulsion, with the inner aqueous droplet (W1) only containing the hydrophilic polymer initially dispersed in oil. By combining single drop experiments, with macroscopic viscosity measurements, we demonstrated that the double emulsion resulted of water diffusion, which amplitude could be adjusted by the polymer concentration. The production of high internal phase emulsions was also achieved, together with a pH-induced transition from multiple to single core double emulsion. We expect this new method for producing double emulsions to find applications in domains of microencapsulation and materials chemistry
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enOne step generation of single-core double emulsions from polymer-osmose-induced aqueous phase separation in polar oil droplets
dc.typeArticle de revue
dc.identifier.doi10.1039/D3SM00970J
dc.subject.halChimie/Polymères
dc.subject.halPhysique [physics]
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
bordeaux.journalSoft Matter
bordeaux.page7562-7569
bordeaux.volume19
bordeaux.issue39
bordeaux.peerReviewedoui
hal.identifierhal-04213802
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04213802v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Soft%20Matter&rft.date=2023&rft.volume=19&rft.issue=39&rft.spage=7562-7569&rft.epage=7562-7569&rft.eissn=1744-683X&rft.issn=1744-683X&rft.au=DOULIEZ,%20Jean-Paul&ARLAUT,%20Anais&BEVEN,%20Laure&FAMEAU,%20Anne-Laure&SAINT-JALMES,%20Arnaud&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée