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

摘要

Dielectric constant (ε′) and Dielectric loss (ε″) 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 (ε_0) of the liquid samples has been determined using precision LCR meter. Dielectric permittivity at optical frequency (ε_∞) has also been measured. Determined values of static permittivity (ε_0) and complex permittivity (ε~*) at 9.1 GHz frequency were used to evaluate relaxation time (τ). Determined parameters have been interpreted in terms of molecular interaction among the molecular species of the binary mixtures.