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Planar lamellae and onions: a spatially resolved rheo-NMR approach to the shear-induced structural transformations in a surfactant model system

dc.contributor.authorMedronho, B.
dc.contributor.authorBrown, J.
dc.contributor.authorMiguel, M. G.
dc.contributor.authorSchmidt, C.
dc.contributor.authorOlsson, U.
dc.contributor.authorGalvosas, P.
dc.date.accessioned2015-12-02T14:23:39Z
dc.date.available2015-12-02T14:23:39Z
dc.date.issued2011
dc.description.abstractThe shear-induced transformations between oriented planar lamellae and a state of closely packed multilamellar vesicles (MLVs) in a lyotropic nonionic surfactant model system were studied by the combination of nuclear magnetic resonance (NMR) spectroscopy and diffusometry with magnetic resonance imaging (MRI). (2)H NMR imaging confirmed the discontinuous nature of the transition from onions to planar lamellae, revealing the spatial coexistence of both states within the gap of the cylindrical Couette geometry. On the other hand, NMR diffusion measurements in three principal directions and at various values of strain strongly suggest that a multi-lamellar cylindrical or undulated intermediate structure exists during the continuous and spatially homogeneous transition from planar lamellae to MLVs.
dc.identifier.doihttps://dx.doi.org/10.1039/c0sm01323d
dc.identifier.issn1744-683X
dc.identifier.urihttp://hdl.handle.net/10400.1/7267
dc.language.isoeng
dc.peerreviewedyes
dc.publisherRoyal Society of Chemistry
dc.relation.isbasedonP-002-ZJF
dc.titlePlanar lamellae and onions: a spatially resolved rheo-NMR approach to the shear-induced structural transformations in a surfactant model system
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage4947
oaire.citation.startPage4938
oaire.citation.titleSoft Matter
oaire.citation.volume7
person.familyNameMedronho
person.givenNameBruno
person.identifier.ciencia-id6918-9AB3-8D22
person.identifier.orcid0000-0003-0972-1739
person.identifier.ridP-5927-2014
person.identifier.scopus-author-id9940656700
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication4c03571a-93da-4504-8acf-c74326449852
relation.isAuthorOfPublication.latestForDiscovery4c03571a-93da-4504-8acf-c74326449852

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