Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
94 (1991), S. 5222-5225
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The stability of colloidal silica particles in a mixture of water and 2,6-lutidine is investigated in the presence of salt. Close to the demixing temperature of the solvent, a reversible flocculation occurs, coupled with lutidine adsorption on the colloid surface. Addition of Mg(NO3)2 is shown to suppress the lutidine adsorption and to reverse it into water adsorption. The flocculation disappears at the same time. This behavior is interpreted as a modification of the properties of the colloid surface by the salt and is in accord with current wetting theory.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.460526
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