Abstract

A simple model is proposed to account for the inhibiting of liquid evaporation by a surface monolayer. The permeation rate is related to the probability P of hole formation in a hard disk fluid, as determined by computer simulation, and a route to P via the symmetric triplet distribution function is indicated. Good agreement is found with experimental evaporation resistances for fatty alcohol monolayers on water. The assumptions and results of the model are compared with those of density-fluctuation theory.

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