Viscosity and refractive index investigations on some green solvent materials

Abstract— Viscosity and refractive index data have been evaluated for several mixture compositions of two binary systems (system one ([Emim][Bf4] and NMA) as well as system two ([Bmim][Bf4] and NMA)) in the temperatures range (293.15 to 323.15) K. The study categorically shows that the simultaneous analysis of excess properties of viscosity and refractive index is able to offer an extensive explanation for intermolecular interactions happening in the mixture systems, particularly if the part molecules have various sizes. Several theoretical methods are utilized to evaluate the refractive indices. The precise knowledge of the Viscometric nature of the studied systems plays a vital role in many industrial applications.