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Interaction of sodium ions with cationic surfactant interfaces

Murgia, Sergio; Portesani, Filippo; Ninham, Barry; Monduzzi, Maura


The thermodynamically stable microemulsion and lamellar phases in the didodecyldimethylammonium bromide/water/n-decane ternary system were explored in the presence of NaBr to gain information on sodium ion-interface interactions. Experimental results, obtained by different NMR techniques, strongly suggest accumulation of sodium ions at the cationic interface. This apparently counterintuitive result is explained by invoking the dispersion potential experienced by the ions near the interface. A...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Chemistry, A European Journal
DOI: 10.1002/chem.200600080


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