Electrostatic Double-Layer Interaction between Two Charged Ion-Penetrable Spheres: An Exactly Solvable Model

The exact expression for the interaction energy between two charged ion-penetrable spheres is obtained on the basis of the linearized Poisson-Boltzmann equation without recourse to Derjaguin's approximation. This enables us to check the validity of Derjaguin's method as well as that of its...

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Veröffentlicht in:	Journal of colloid and interface science 1993-02, Vol.155 (2), p.499-505
Hauptverfasser:	Ohshima, Hiroyuki, Kondo, Tamotsu
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Colloidal state and disperse state Exact sciences and technology General and physical chemistry Physical and chemical studies. Granulometry. Electrokinetic phenomena
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The exact expression for the interaction energy between two charged ion-penetrable spheres is obtained on the basis of the linearized Poisson-Boltzmann equation without recourse to Derjaguin's approximation. This enables us to check the validity of Derjaguin's method as well as that of its extension to the interaction of unequal spheres by Hogg, Healy, and Fuerstenau ( Trans. Faraday Soc. 62, 1638 (1966)). It is shown that Derjaguin's method is quite a good approximation for the case of two interacting charged ion-penetrable spheres.
ISSN:	0021-9797 1095-7103
DOI:	10.1006/jcis.1993.1064