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dc.contributor.author
Arnould, Audrey
dc.contributor.author
Perez, Adrián Alejandro
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dc.contributor.author
Gaillard, Cédric
dc.contributor.author
Douliez, Jean Paul
dc.contributor.author
Cousin, Fabrice
dc.contributor.author
Santiago, Liliana Gabriela
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dc.contributor.author
Zemb, Thomas
dc.contributor.author
Anton, Marc
dc.contributor.author
Fameau, Anne Laure
dc.date.available
2018-05-08T20:21:46Z
dc.date.issued
2015-05
dc.identifier.citation
Arnould, Audrey; Perez, Adrián Alejandro; Gaillard, Cédric; Douliez, Jean Paul; Cousin, Fabrice; et al.; Self-assembly of myristic acid in the presence of choline hydroxide: Effect of molar ratio and temperature; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 445; 5-2015; 285-293
dc.identifier.issn
0021-9797
dc.identifier.uri
http://hdl.handle.net/11336/44501
dc.description.abstract
Salt-free catanionic systems based on fatty acids and cationic surfactants are known to exhibit a broad polymorphism by simply tuning the molar ratio between the two components. In the case of fatty acid combined with organic amino counter-ions, very few data are available on the phase behavior obtained as a function of the molar ratio between the counter-ion and the fatty acid. In this study, we investigated the choline hydroxide/myristic acid system as a function of the molar ratio, R= n choline hydroxide/n myristic acid, and the temperature. At molecular scale, the ionization state of myristic acid was determined as a function of R by coupling pH, conductivity and infra-red spectroscopy measurements. At microscopic scale, the self-assemblies were characterized by small angle neutron scattering and microscopy experiments.For R<1, we showed that the two forms of myristic acid molecules (ionized and protonated)coexisted leading to the formation of facetted objects (vesicles coexisting with discs) and lamellar phases, depending on R. The thermal behavior of the bilayers inside the selfassembly was investigated by differential scanning calorimetry, wide angle X-ray scattering and nuclear magnetic resonance. We showed that the melting process between the gel state and the fluid state of the bilayers induced a structural change from facetted objects and lamellar phases to spherical vesicles. For R>1, all the myristic acid molecules were under their ionized form and only spherical micelles were present in solution. As in the case of catanionic systems, our study highlights that both R and temperature are two key parameters to finely control the self-assembly structure formed by myristic acid in the presence of choline hydroxide.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Inc Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Fatty Acid
dc.subject
Counter-Ion
dc.subject
Molar Ratio
dc.subject
Self-Assembly
dc.subject
Catanionic
dc.subject.classification
Nano-materiales
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dc.subject.classification
Nanotecnología
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Self-assembly of myristic acid in the presence of choline hydroxide: Effect of molar ratio and temperature
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-27T20:27:50Z
dc.journal.volume
445
dc.journal.pagination
285-293
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Arnould, Audrey. Institut National de la Recherche Agronomique; Francia
dc.description.fil
Fil: Perez, Adrián Alejandro. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología de los Alimentos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
dc.description.fil
Fil: Gaillard, Cédric. Institut National de la Recherche Agronomique; Francia
dc.description.fil
Fil: Douliez, Jean Paul. Institut National de la Recherche Agronomique; Francia
dc.description.fil
Fil: Cousin, Fabrice. Centre National de la Recherche Scientifique; Francia
dc.description.fil
Fil: Santiago, Liliana Gabriela. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología de los Alimentos; Argentina
dc.description.fil
Fil: Zemb, Thomas. Centre National de la Recherche Scientifique; Francia
dc.description.fil
Fil: Anton, Marc. Institut National de la Recherche Agronomique; Francia
dc.description.fil
Fil: Fameau, Anne Laure. Institut National de la Recherche Agronomique; Francia
dc.journal.title
Journal of Colloid and Interface Science
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.jcis.2015.01.008
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0021979715000351
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