Original scientific paper

The Colloidal Stability of the Negatively Charged Silver Chloride System in the Presence of a Non-Ionic Surface-Active Agent and Electrolytes

N. Puzigaća-Stubičar ; Department of Physical Chemistry, Institute of Chemistry, University of Zagreb, 41000 Zagreb, Croatia, Yugoslavia
B. Težak ; Department of Physical Chemistry, Institute of Chemistry, University of Zagreb, 41000 Zagreb, Croatia, Yugoslavia

Abstract

The kinetics of the coagulation of negatively charged silver
chloride sols in statu nascendi at a temperature of 293 K by K-,
Mg-, and La-nitrate in the presence of a non-ionic surface active
agent (SAA) T-X-305 was investigated by the light scattering
method, using the tyndallometric technique. The concentration region
between 1 x 10-4 and 2 X 10-3 mol dm·3 AgCl/Cl· with 1 X 10·3
mol dm·3 KCl in excess was examined. The colloid stability is presented
with the relative rate constants of coagulation (or stability
coefficients) and also with the critical times of coagulation, because
a linear relationship was found to exist between them. The stability
study was completed with adsorption and electrophoretic mobility
measurements which revealed a good correlation of all three interfacial
parameters.

Keywords

Hrčak ID:

196335

URI

https://hrcak.srce.hr/196335

Publication date:

20.7.1977.

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