Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Physicochemical Studies of Stearic Acid Monolayer-Aluminum Ion Interaction. II. The Surface Viscoelasticity
Kinsi MotomuraRyohei Matuura
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1962 Volume 35 Issue 2 Pages 289-295

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Abstract

By using the ring torsion pendulum method and applying the correct mathematical analysis, surface viscoelasticity measurements were carried out on the monolayers of (1) stearic acid on a 10−4 mol./l. aluminum chloride solution, (2) aluminum distearate on distilled water, and (3) aluminum distearate on a 10−4 mol./l. aluminum chloride solution. It was found that the rheological behavior of 1 and 2 could be analyzed in terms of the four-parameter model and of 3 by the three-parameter model or elasticity. Also, with regard to the values of viscoelasticity, it was shown that at large areas 1 was smaller than both 2 and 3, and at small areas 1 approaches to 3. From the viewpoint of these results, it was concluded that the interacted monolyer of stearic acid with aluminum ion in an underlying solution might be analogous to the monolayer of aluminum distearate with a short chain length adsorbing basic aluminum ion.

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