Abstract
Zeta potential of two oxides TiO2 and Al2O3, dispersed in various organic solvents were measured at room temperature. The inorganic particles were dried at temperatures ranging from 100 to 500 °C for several days and were allowed to cool under vacuum just before use. Electrokinetic investigations of TiO2 particles in n‐alkylamine‐hexane solutions with various amine chain lengths (CnH2n+1NH2, n=1–10) were also done and allowed the determination of the shear plane position in the eventual electric double layer surrounding the solid surface. Furthermore, in order to estimate the thickness δ of the electrical double layer surrounding the solid surface, DLVO theory was applied to TiO2 particles dispersed in n‐hexane, in the presence of butylamine.
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