Diffusion in Binary Liquid Mixtures of non Electrolytes

Abstract

Self diffusion coefficients at 25 'C for octamethylcyclotetrasiloxanc in binary mixtures with benzene and carbon tetrachloride have been measured by pulsed field gradient pulsed n.m.r. A comparison is made of the diffusion data for these systems with the predictions of the Darken equation and of simple hard sphere theory expressions; neither approach gives a satisfactory representation to the data. Friction coefficients, Li, for octamethylcyclotetrasiloxanc have been evaluated for part of the composition range.