Abstract

Abstract Capillary ripple characteristics of monolayers of cholesterol and dipalmitoyllecithin and a 1 : 1 mixture of the two over air-water interface were studied. The ripple damping coefficient and the wavelength were determined as a function of the surface concentration. A stronger chain-chain interaction exists between the molcules in the pure cholesterol monolayer compared to pure lecithin as indicated by the sharp maximum in the damping coefficient curve for the former case. In the monolayer of the mixture, there is evidence of an interaction between the chains of the two substances.

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