Date of Award

6-1942

Document Type

Union College Only

Degree Name

Bachelor of Science

Department

Chemistry

Language

English

Abstract

The underlying purpose of this work was to gain a further insight into the mechanism of the setting of silicic acid gels. The primary purpose was to determine the heat of reaction during the setting process for the gels. Previous investigators have sought to determine the structure of gels by investigating the effect of certain factors as: temperature, concentration of both acid and silica, pH, and addition of soluble organic and inorganic materials on the time of set. Certain properties of the silicic acid gels have bearing on the theories for the mechanism of the setting process. These properties are the elasticity of the gel, the molecular weight, thixotropy, syneresis, the x-ray analysis, and the electrical conductivity. It is the author’s opinion that any information concerning thermal changes during the setting of the gel would be of aid in favoring one theory over the others, and would perhaps offer experimental proof of this theory.

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