Abstract
AbstractMeasurements of the thermal diffusion constant of polystyrene in toluene and butyl acetate solutions have been made. Direct observation of a moving boundary was used. There is a small change of thermal diffusion constant with molecular weight, but it is doubtful that it could be used for analytical purposes. The results for polystyrene in toluene have been compared with those obtained by Debye and Bueche with a convection‐type column.
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