Abstract
ABSTRACT The adsorption of sodium polystyrene sulfonate (PSSNa) on TiO2 in aqueous dispersion has been investigated in pure water and in the presence of different concentrations of sodium sulphate. The stability of TiO2 dispersions in PSSNa and Na2SO4 solutions has also been studied. Correlation between adsorption isotherms,zeta potential data and stability measurements has shown that the specific adorption of sulphate anions influences the adsorption of PSSNa and then the stability of the dispersions. The adding of proper amounts of Na2SO4 increases the stability of TiO2 dispersions in PSSNa solutions.
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