Prediction of dielectric constants of (cyclic ketone- 1,4-butanediol) binary systems

In order to predict the permittivity and excess permittivity data of binary systems containing cyclic ketones (cyclohexanone and cyclopentanone) and 1,4-butanediols, various mixing rules were used [1,2]. The permittivity increment, ( ) 12 1 1 2 2 Δε =ε − xε + x ε , was also evaluated in this research using the predicted data. 1 x and 2 x are the mole fractions of the components 1 and 2, 1 ε and 2 ε are the permittivities of the pure components. As shown in Fig. 1, theexperimental permittivity values for three systems containing 1,4- butanediol (1,4BD) and two cyclic ketones were estimated by several mixing rules. Typically, for cyclohexanone and 1,4- butanediol mixtures, the predicted excess permittivity data were compared and shown in Fig. 2. As it can be seen from Table 1, the Lichteneker-Rother model shows the lower root mean square deviation (rmsd) value, which indicates that the Lichteneker-Rother model presents the best result between the predictive models.