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Structural characterization of the interfacial self-assembly of chitosan with oppositely charged surfactant

hal.structure.identifierLaboratoire Rhéologie et Procédés [LRP]
dc.contributor.authorCHACHANIDZEA, Revaz
hal.structure.identifierLaboratoire Rhéologie et Procédés [LRP]
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorXIE, Kaili
hal.structure.identifierLaboratoire Rhéologie et Procédés [LRP]
dc.contributor.authorMASSAAD, Hanna
hal.structure.identifierLaboratoire Rhéologie et Procédés [LRP]
dc.contributor.authorROUX, Denis C.D.
hal.structure.identifierLaboratoire Rhéologie et Procédés [LRP]
hal.structure.identifierCentre Interdisciplinaire de Nanoscience de Marseille [CINaM]
dc.contributor.authorLÉONETTI, Marc
hal.structure.identifierLaboratoire Rhéologie et Procédés [LRP]
dc.contributor.authorDE LOUBENS, Clément
dc.date.issued2022-06-15
dc.identifier.issn0021-9797
dc.description.abstractEnControlling the assembly of colloids at liquid-liquid interfaces offers new ways to fabricate soft materials with specific physical properties. However, little is known of the relationships between the kinetics of interfacial assembly, structural and rheological properties of such interfaces. We studied the kinetics of the assembly of two oppositely charged polyelectrolytes using a multi-scale approach. Soft interfaces were formed from the complexation at water-oil interface of chitosan, a polysaccharide carrying positively charged groups, and a fatty acid exhibiting negative charges. The growth kinetics of the membrane was followed by interfacial rheometry and space- and time- resolved dynamic light scattering. This set of techniques revealed that the interfacial complexation was a multi-step process. At short time-scale, the interface was fluid and made of heterogeneous patches. At a gelation time, the surface elastic modulus and the correlation between speckles increased sharply meaning that the patches percolated. Confocal and electron microscopy confirmed this picture, and revealed that the basic brick of the membrane was sub-micrometric aggregates of polyelectrolytes.
dc.description.sponsorshipIngénierie de la Complexité : la mécanique et ses interfaces au service des enjeux sociétaux du 21iè - ANR-11-LABX-0030
dc.description.sponsorshipDes écoulements interfaciaux aux viscosités de surface - ANR-18-CE06-0008
dc.language.isoen
dc.publisherElsevier
dc.title.enStructural characterization of the interfacial self-assembly of chitosan with oppositely charged surfactant
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jcis.2022.01.143
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
dc.identifier.arxiv2110.03519
bordeaux.journalJournal of Colloid and Interface Science
bordeaux.page911-920
bordeaux.volume616
bordeaux.peerReviewedoui
hal.identifierhal-03376419
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03376419v1
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