Salt concentrations force distance curves

The stability of dispersions in aqueous media can often be described by the DLVO theory, which contains the double-layer repulsion and the van der Waals attraction. Specific force versus distance curves depend on the Hamaker constant, the surface charges, and the salt concentration. In general, DLVO theory predicts an electrostatic repulsion at intermediate distance and a van der Waals dominated attraction at short distance. 

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