Brasil | Artículos de revistas
dc.creatorBernardes, JS
dc.creatorNorrman, J
dc.creatorPiculell, L
dc.creatorLoh, W
dc.date2006
dc.date45231
dc.date2014-11-16T10:59:51Z
dc.date2015-11-26T16:22:21Z
dc.date2014-11-16T10:59:51Z
dc.date2015-11-26T16:22:21Z
dc.date.accessioned2018-03-28T23:03:56Z
dc.date.available2018-03-28T23:03:56Z
dc.identifierJournal Of Physical Chemistry B. Amer Chemical Soc, v. 110, n. 46, n. 23433, n. 23442, 2006.
dc.identifier1520-6106
dc.identifierWOS:000242045900072
dc.identifier10.1021/jp0636165
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/56355
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/56355
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/56355
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1268075
dc.descriptionThe phase behavior of ternary mixtures containing an alkyltrimethylammonium polyacrylate complex salt, water, and a nonpolar "oil" (n-decanol, p-xylene or cyclohexane) is investigated. The complex salts were prepared with short or long polyacrylates (30 or 6000 repeating units) and with hexadecyltrimethylammonium or dodecyltrimethylammonium surfactant ions. Phase diagrams and structures were determined by visual inspection and small-angle X-ray scattering analyses. Systems containing decanol display a predominance of lamellar phases, while hexagonal phases prevail in systems containing p-xylene or cyclohexane. The difference is interpreted as a result of the different locations of the oils within the surfactant aggregates. Decanol is incorporated at the aggregate interface, leading to a decrease in its curvature, which favors the appearance of lamellar structures. p-Xylene and cyclohexane, on the other hand, are mostly incorporated in the interior of the cylindrical aggregate, as reflected by its swelling as the oil content increases. The comparison of these results with those reported for similar systems with monovalent (bromide) counterions indicates a much more limited swelling of the lamellar phases with polymeric counterions by water. This limited swelling behavior is predominantly ascribed to bridging due to the polyions.
dc.description110
dc.description46
dc.description23433
dc.description23442
dc.languageen
dc.publisherAmer Chemical Soc
dc.publisherWashington
dc.publisherEUA
dc.relationJournal Of Physical Chemistry B
dc.relationJ. Phys. Chem. B
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectPhase-behavior
dc.subjectCationic Surfactant
dc.subjectLiquid-crystals
dc.subjectBlock Ionomers
dc.subjectSystems
dc.subjectMembranes
dc.subjectVesicles
dc.titleComplex polyion-surfactant ion salts in equilibrium with water: Changing aggregate shape and size by adding oil
dc.typeArtículos de revistas


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