Dielectric relaxation study of diol mixtures

Abstract

The dielectric relaxation of binary and ternary diol mixtures was studied. Diols of different chain lengths namely ethane-1,2-diol, propane-1,3-diol, butane-1,4-diol and pentane-1,5-diol were used. The relaxation spectra were analyzed in a single Cole–Davidson term. The effective dielectric relaxation time is shown to depend exponentially on the number density of dipoles or molecules. An empirical equation is suggested.