Microwave Dielectric Relaxation in Binary Mixtures of Pyridine and 1-Propanol at Different Temperatures

Dielectric constant (epsilon') and Dielectric loss (epsilon '') of the binary mixtures of the pyridine and 1-propanol have been measured at microwave frequencies of X-band and J-band at 303,313 and 323K temperatures. Static permittivity (epsilon(0)) of the liquid samples has been determined using precision LCR meter. Dielectric permittivity at optical frequency (epsilon(infinity)) has also been measured. Determined values of static permittivity (epsilon(0)) and complex permittivity (epsilon*) at 9.1 GHz frequency were used to evaluate relaxation time (tau). Determined parameters have been interpreted in terms of molecular interaction among the molecular species of the binary mixtures.