(733g) Entropy Scaling of Viscosity for Molecular Models of Molten Salts

Residual entropy scaling provides a way to connect thermodynamic and dynamic properties, and therefore can allow for the prediction of dynamics from an equation of state. When dynamic properties, such as viscosity, are reduced by the density and temperature, they often become univariate functions of the residual entropy. Although such scaling has been shown to work for a number of systems dominated by repulsive interactions, it is not clear if molten salts with strong Coulomb interactions will also display this behavior. Using molecular simulations to calculate viscosity and entropy, a number of molten salt models are tested, and their entropy scaling behavior is demonstrated. Although these molten salts are not R-simple fluids, the results suggest that entropy scaling works reasonably well. This study may assist in future development of correlations and predictions for the dynamic properties of molten salts.