期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 213, 期 1, 页码 37-44出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0927-7757(02)00336-9
关键词
fatty acid; soap; vesicle; liposomes; micelles; formation; kinetics; thermodynamics; dialysis
The dialysis of micellar and vesicular systems, through a cellulose acetate membrane permeable only to monomer surfactant, has been investigated for the system sodium decanoate/decanoic acid as a function of pH, in pH regions where micelles (pH 9) or vesicles (pH 7.5) are present. The results provide data that are helpful in establishing the thermodynamic state of the systems and the interplay of the relevant equilibrium and kinetic considerations. Additionally, the kinetics of spontaneous formation and destruction of vesicles when subjected to a pH-jump perturbation have been studied. Changes are rapid, taking place over a time scale of a few seconds. (C) 2002 Elsevier Science B.V. All rights reserved.
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