New Measurement Technique for the Dielectric Study of Solutions and Suspensions

Abstract

This paper shows that the first order perturbation expression can be used without simplification to measure the permittivity of a material if the proportionality between the perturbation and the perturbating volume is well defined. To achieve a precision near 1%, cavities with large volume and high Q factor, thermally stabilized and with precise perturbing volume (precision better than 0.5%J must be used.We measured the permittivity of solutions of LiCl, NaCl and KCl as a function of concentration and temperature, Latex suspensions were also studied as a function of the nature and dimensions of particles at various temperatures.