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.
