MODELS FOR VISCOSITY OF LIQUID-SYSTEMS - APPLICATION TO THE BINARY AND TERNARY SOLVENT MIXTURES

Viscosities of three binary liquid mixtures of water + 1,4-dioxane, wa ter + dimethylsulphoxide, dimethylsulphoxide + 1, 4-dioxane and of cor responding ternary system were measured at 303.15 and 313.15 K over th e whole range of mixture compositions. Experimental data were correlat ed by means of some models in literature (MCALLISTER, REDLICH KISTER a nd by means of new suggested model (NPTL/v)). The viscosity of the ter nary system was predicted using parameters determined from binary data . Prediction was improved by ternary parameter determined from experim ental data. Predicted viscosities agree well with the experimental mea surements.