Theoretical and experimental study of the surface charge density and the surface potential of coal—water suspensions in dissymmetrical electrolytes

1994 ◽  
Vol 84 (2-3) ◽  
pp. 217-228 ◽  
Author(s):  
Tayssir Hamieh ◽  
Bernard Siffert
Keyword(s):  
Experimental Study ◽  
Charge Density ◽  
Surface Charge ◽  
Surface Potential ◽  
Surface Charge Density ◽  
Water Suspensions

Surface potential and conductance induced in lipid bilayers by the negatively charged ionophore Br-X537A

1982 ◽  
Vol 60 (1) ◽  
pp. 42-48 ◽  
Author(s):  
G. Roy ◽  
Y. Okada ◽  
R. Laprade
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Lipid Bilayers ◽  
Concentration Dependence ◽  
Surface Potential ◽  
Surface Charge Density ◽  
Ph Dependence ◽  
Neutral Molecule ◽  
Effect Of Ph

The adsorption of Br-X537A and its effect on the surface potential of monoolein lipid bilayers was measured using the nonactin conductance as a probe to determine the surface charge density. Because of the pH dependence of this adsorption, it was concluded that not only the negatively charged molecules X− could induce a surface charge but also a dimer HX2− made from X− and the neutral molecule HX. Also an important bilayer conductance was induced by Br-X537A. From the Br-X537A concentration dependence of this conductance, the effect of pH, and the induced surface potential, it was found that two charged complexes are transported across the bilayer depending on pH. At pH ≥ 7 the conducting molecule is X− and at pH ≤ 5 the complex is H2X3−. A quantitive model is obtained to calculate both the induced surface potential and the conductance.

scholarly journals Effects of Intramolecular Double Bonds on Micellar Surface Potential and Surface Charge Density of Icosapolyenoic Acids

1999 ◽  
Vol 48 (12) ◽  
pp. 1371-1376,1417 ◽  
Author(s):  
Shoko YOKOYAMA ◽  
Yoshihiro FUJINO ◽  
Tadahiro TAKEDA ◽  
Masahiko ABE
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Surface Potential ◽  
Surface Charge Density ◽  
Double Bonds
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