Dielectric dispersion study of glycol ethers and their binary mixtures with water

摘要

The complex dielectric properties of glycol ethers with water at various concentrations have been measured using Agilent make Precision LCR meter E4980A in the frequency range of 20 Hz to 2 MHz at 25 °C with dielectric liquid test fixture 16452A. The electrical and dielectric properties of the binary mixtures have been represented in terms of complex dielectric function ε*(ω), electrical modulus emM/em*(ω), electrical conductivity σ*(ω). All these parameters have been used to explain the various processes associated with the electric and dielectric properties of the binary mixtures of glycol ethers in aqueous solutions. The values of static dielectric constant of various concentrations have been reported at 2 MHz frequency. Further the excess dielectric properties for the binary mixtures have been evaluated to investigate the heterogeneous interactions in glycol ether-water molecules.