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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/41331


    Title: Estimation of the Ionic Distribution in a Reverse Micelle:  Effect of Ionic Size
    Authors: Hsu, Jyh-ping;Jiang, Ji-Ming;曾琇瑱;Tseng, Shio-jenn
    Contributors: 淡江大學數學學系
    Date: 2003-12-25
    Issue Date: 2010-01-28 07:19:51 (UTC+8)
    Publisher: American Chemical Society (ACS)
    Abstract: The effect of ionic size on both the degree of dissociation of the surfactant shell of a spherical reverse micelle and the spatial distribution of ionic species inside is examined on the basis of a modified Poisson−Boltzmann equation and a local ideal mixing rule. The dissociation of surfactant molecules is the consequence of the competition between the entropic effect of counterions in the aqueous core, the osmotic effect of the surfactants on the micelle shell, and the effect of electrical interactions. We show that the ion distribution close to the surfactant shell can be altered remarkably, and the saturation adsorption concentration varies with dissociation conditions. The free energy associated with the dissociation of surfactant molecules is studied taking the steric effect of ionic species into account. The presence of a neutral particle in a reverse micelle is found to have a negative effect on the degree of dissociation of the surfactant shell.
    Relation: Journal of Physical Chemistry B 107(51), pp.14429-14433
    DOI: 10.1021/jp0350058
    Appears in Collections:[Graduate Institute & Department of Mathematics] Journal Article

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