Dielectric relaxation of O-methyl N-phenyl maleimide, its binary and ternary mixtures with methyl methacrylate and styrene in carbon tetrachloride solutions

Abstract

The dielectric relaxation measurements of o-methyl N-phenyl maleimide and its binary mixtures with methyl methacrylate and styrene in dilute carbon tetrachloride solutions were studied in the microwave region (0.2–18 GHz). The dielectric loss data were analyzed using Debye equation into one absorption region. This region describes either the orientation of the molecule as a whole or the possibly complex which was expected to be formed or both. The values of the relaxation time of the investigated mixtures as a function of mole fraction shows a deviation from linearity. This deviation was attributed to some sort of molecular interaction which may take place between the donor acceptor systems. The ratios between the experimental values of the relaxation time and those calculated from individual τ i's when the mole fraction was taken into account are considered to be a measure for such interaction. The equilibrium constant K for the investigated systems is also studied by means of the dielectric polarization measurements in order to determine quantitatively the complex which is expected to be formed.