|Title:||Electrophoretic mobility of concentrated spheres with a charge-regulated surface||Authors:||Lee E.
|Keywords:||Charge-regulated surface;Concentrated dispersion;Electrophoresis;Unit cell model||Issue Date:||2000||Journal Volume:||21||Journal Issue:||3||Start page/Pages:||475-480||Source:||Electrophoresis||Abstract:||
The electrophoretic behavior of a concentrated spherical colloidal particle is modeled theoretically under the Debye-Huckel condition. The surface of a particle contains dissociable functional groups, the dissociation of which yields negative fixed charges. The model derived is applicable to an arbitrarily thick double layer. We show that the absolute surface potential decreases with the increase in £ea; £e and a are the reciprocal Debye length and the radius of a particle, respectively. Moreover, the variation of the absolute electrophoretic mobility as a function of £ea has a maximum.
|Appears in Collections:||化學工程學系|
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