Back to articles
Volume: 14 | Article ID: art00051_1
Electrophoretic Behavior in Model Colloidal Systems
  DOI :  10.2352/ISSN.2169-4451.1998.14.1.art00051_1  Published OnlineJanuary 1998

The understanding of underlying physical principles governing colloidal behavior in low dielectric liquids is of fundamental interest. A model colloidal system, which consists of monodispersed, –CN terminated, silica particles in di-2-ethylhexylsulfosuccinate (AOT) and hydrocarbon fluids, was chosen to study electrophoresis of charged particles over a wide range of AOT concentrations and applied fields, up to 1.0 V/micron. These particles charge negatively in AOT/Isopar solutions. We use the electrophoretic light scattering technique to determine that particle mobilities increase with applied electric field and level off for fields larger than 0.5 V/micron, independently of AOT concentration for concentrations larger than 1 mM. At high electric fields, where the mobility is field independent, all the dispersions converge to a single value of the mobility. A physical model is proposed to explain the experimental results. The model parameters are correlated with those extracted from adsorption isotherms of AOT/silica particles. This method of characterization of the dispersions and their electrophoretic behavior provides a deep understanding of the parameters that control charging, and is most relevant for industrial applications such as liquid ink printing and electrophoretic display devices.

Subject Areas :
Views 2
Downloads 0
 articleview.views 2
 articleview.downloads 0
  Cite this article 

Faguang Jin, H. Ted Davis, D. Fennell Evans, R. Enrique Viturro, "Electrophoretic Behavior in Model Colloidal Systemsin Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP14),  1998,  pp 206 - 209,

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 1998
NIP & Digital Fabrication Conference
nip digi fabric conf
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA