Alkaline earth stearate emulsions

Conclusions

Considering the conditions under which these emulsions were prepared and from the facts brought out about them, we believe, with Bancroft and others, that the peptizing action of these soaps is due to their concentration at the liquid-liquid interface and to the subsequent formation of a tough elastic film of particles of the soap around the drops of water. From the character of the soaps dealt with, it appears to us that the hydrophobic film consists of discrete particles. The variations found in viscosities can be explained upon the assumption that there is difference in the water particle size under the different conditions. The solubility of the soap in the oil can take but little, if any, part in determining the character of these emulsions, for the work was done with concentrations far in excess of the solubilities of the several soaps at the temperatures employed.