Viscosity and electroviscous effect of the AgI sol. I. influence of the velocity gradient and of aging of the sol

Abstract

It was shown that the change of the viscosity of silver iodide sols during aging was mainly, but not exclusively, caused by the liberation of electrolytes.

The viscosity of AgI sols was shown to decrease with increasing rate of shear, the more so as the concentration of the sol was higher and that of the electrolytes lower. For the investigation of the influence of these concentrations on the viscosity, a rate of shear of 500–1000/sec. was considered sufficiently low, and extrapolation to zero rate of shear was deemed unnecessary.