Naslov
Influence of sodium chloride on light scattering by colloidal silica

Autori
Deželic, Gjuro ; Kratohvil, Josip P.

Izvornik
Journal of physical chemistry (0022-3654) 66 (1962), 8; 1377-1380

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
light scattering ; colloidal silica ; sodium chloride

Sažetak
The particle diameters and second virial coefficients of a sample of "Ludox" colloidal silica have been determined from turbidity measurements at several concentrations of sodium chloride (in the range 0.025-0.300 M). No significant change of average particle diameter could be noted as the sodium chloride concentration increased. For solutions with no sodium chloride added light scattering data gave apparently lower values for particle diameter. The second virial coefficient decreased with increasing concentration of sodium chloride. The results are discussed in terms of Stigter's theory of light scattering by colloidal electrolytes. The experimentally determined second virial coefficient of "Ludox" compared remarkably well to those estimated on the basis of Stigter's treatment.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA