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Journal Article

Spontaneous Vesicle Formation in Aqueous Mixtures of Single-Tailed Surfactants

Eric W. Kaler, A. Kamalakara Murthy, Beatriz E. Rodriguez and Joseph A. N. Zasadzinski
Science
New Series, Vol. 245, No. 4924 (Sep. 22, 1989), pp. 1371-1374
Stable URL: http://www.jstor.org/stable/1704271
Page Count: 4

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Topics: Surfactants, Diameters, Chemicals, Sodium, Colloids, Dialysis, Chemical mixtures, Phase diagrams, Biochemistry
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Spontaneous Vesicle Formation in Aqueous Mixtures of Single-Tailed Surfactants
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Abstract

Spontaneous, single-walled, equilibrium vesicles can be prepared from aqueous mixtures of simple, commercially available, single-tailed cationic and anionic surfactants. Vesicle size, surface charge, or permeability can be readily adjusted by varying the ratio of anionic to cationic surfactant. Vesicle formation apparently results from the production of anion-cation surfactant pairs that then act as double-tailed zwitter-ionic surfactants. These vesicles are quite stable in comparison to conventional vesicles prepared by mechanical disruption of insoluble liquid crystalline dispersions.

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