Date of Award
Union College Only
Bachelor of Science
It has been stated by Prasad and Hattiangadi (1) that the process of setting of mixtures of solutions of sodium silicate and acetic acid consists of three stages: (a) The formation of silicic acid by the interaction of the acid with sodium silicate (b) The formation of the colloidal solution of silicic acid (c) The coagulation of the colloidal solution by the electrolytes liberated in the first reaction The present investigation was undertaken with a view to examine the effect produced on the time of setting of the silicic acid gels by the addition of extra quantities of electrolytes to the gel-forming mixtures. As the pH of the gel-forming mixture has a marked effect on the time of setting any change in pH of the mixture due to the addition of the electrolyte was carefully noted.
Hallstrom, Gustav F., "Effect of salts on the setting time of silicic acid gels" (1936). Honors Theses. 1837.