A study of molecular interaction in binary mixtures of 1-Propanol with N,N-Dimethylformamide at different temperatures

摘要

The static dielectric constant (ε_0) and optical dielectric constant (ε_∞ = n~2) of binary mixtures of 1-Propanol (1-PrOH) with N,N-Dimethylformamide (DMF) of different concentrations, prepared by volume fractions (0.0, 0.1, ... 1.0) are measured at 2 MHz using precision LCR meter and Abbe's refractometer respectively at different temperatures. The excess dielectric constant (ε_0)~E, Kirkwood correlation parameters (g~(eff), g_F), Bruggeman parameter (f_B) are evaluated. The variations of these parameters with concentration and temperature are discussed in terms of molecular interaction between the molecular species of constituting components in these mixtures.