Calculated and experimentally measured characteristic viscosities [η] of polystyrene in some binary solvents used as eluents in chromatographic experiments in a wide range of mixture compositions were compared. The values of [η] were measured in solvents of varied thermodynamic quality, including the theta solvent and mixtures of solvents of the following compositions: two good solvents; good solvent and theta solvent; good solvent and precipitant; poor solvent and theta solvent. An equation that relates the anomalies observed in the dependences of [η] on the composition of a solvent mixture to parameters of the Flory-Huggins thermodynamic interaction was suggested.
Russian Journal of Applied Chemistry – Springer Journals
Published: Aug 25, 2005
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