Electrophoretic mobility of colloidal particles in salt-free media

2004 ◽  
pp. 11-13 ◽  
Author(s):  
H. Ohshima
Keyword(s):  
Electrophoretic Mobility ◽  
Colloidal Particles ◽  
Free Media

Dynamic Electrophoretic Mobility of Spherical Colloidal Particles in Salt-Free Concentrated Suspensions

Langmuir ◽  
2008 ◽  
Vol 24 (6) ◽  
pp. 2395-2406 ◽  
Author(s):  
Félix Carrique ◽  
Emilio Ruiz-Reina ◽  
Francisco J. Arroyo ◽  
María L. Jiménez ◽  
Ángel V. Delgado
Keyword(s):  
Electrophoretic Mobility ◽  
Colloidal Particles ◽  
Concentrated Suspensions

Electrophoretic Mobility Study of Fresh Hevea Latex

1954 ◽  
Vol 27 (2) ◽  
pp. 472-480 ◽  
Author(s):  
William W. Bowler
Keyword(s):  
Electrophoretic Mobility ◽  
Colloidal Particles ◽  
Mechanical Stability ◽  
Natural Rubber Latex ◽  
Direct Methods ◽  
Electrical Mobility ◽  
Rubber Latex ◽  
Mechanical Agitation ◽  
The Stability ◽  
Mobility Study

Abstract To both the producer of natural rubber latex and the manufacturer of latex goods, the stability of Hevea latex is one of its most important properties. Two aspects of this important property are the mechanical stability and the chemical stability. The former is measured by the sensitivity of latex to mechanical agitation, the latter by the sensitivity to addition of ionic material. Although there is no clear relation known to exist between these two stabilities, the electrical charge on the rubber particles is considered to be important in either case. Since electrophoretic mobility determinations furnish one of the most direct methods for studying the charge on colloidal particles such as those in rubber latex, the effect of seasonal and clonal variations, latex aging, ionic strength, pH, and the presence of added materials on the electrical mobility of fresh Hevea latex was studied. At the same time the mechanical stability of many latexes was measured in order to determine what correlation exists between mobility and mechanical stability.

Effects of cytochalasin B on the aggregation, electrophoretic mobility and surface morphology of chick neural retina cells

1975 ◽  
Vol 17 (3) ◽  
pp. 371-379
Author(s):  
G.E. Jones
Keyword(s):  
Surface Morphology ◽  
Electrophoretic Mobility ◽  
Cytochalasin B ◽  
Neural Retina ◽  
Initial Rise ◽  
Low Concentrations ◽  
Significant Difference ◽  
Site Of Action ◽  
High Concentrations ◽  
Free Media

Over a concentration range of o-5-10 mug/cm-3, cytochalasin B caused a biphasic change in the electrophoretic mobility of disaggregated neural retina cells. An initial rise in anodal mobility at low concentrations of the drug was transformed into a reduction in the mobility below that of the control at a concentration of 10 mug/cm-3. The effect of cytochalasin B was found to be reversible by washing treated cells in cytochalasin B-free media. This was investigated at a concentration of cytochalasin at which the greatest difference existed between the mobilities of the control and experimental cell suspensions. Reaggregation of cell dispersions failed to show any significant difference in the rate of aggregation between cytochalasin B-treated cells and the control. Scanning electron microscopy of cells fixed while in suspension also showed little significant change in the surface morphology upon application of cytochalasin B. In high concentrations of the drug cells appeared somewhat smoother in outline, but no correlation was found between changes in surface morphology and the variations in cell electrophoretic mobility. It is concluded that the observed changes in electrophoretic mobility may be attributed to a binding of cytochalasin B to the cell membrane. This lends support to the hypothesis that the primary site of action of cytochalasin B may be the plasma membrane.

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