Abstract

Abstract (1) The static friction coefficients of glass surfaces covered with the mono- and multi-molecular layers of some long chain acids etc. have been measured. (2) The friction coefficients of glass covered with monomolecular film of acids are about one tenth of that of clean glass. The friction coefficients of alcohols and esters are somewhat higher but fluctuate considerably. (3) The friction coefficients of multimolecular layers decrease by the increase of their thickness until it becomes five or seven molecular layers, but shows no further reduction. (4) The effect of compression during the deposition of the film was investigated. The film deposited in high compression state shows low friction coefficient. (5) The film deposited from basic substrate shows lower friction coefficient than that deposited from acidic substrate. (6) The force area relations of stearic acid monolayer have been studied on fresh distilled water, on tap water, and on tap water added with ammonium oxalate in relation to the transference of the film on the glass plate.

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