Molecular Interaction in a Polar-Polar System-Methyl Isobutyl Ketone (MIBK) and Primary Aliphatic Alcohols--- Using Dielectric Measurements

Abstract

Dielectric constant of binary mixtures of Methyl isobutyl Ketone (MIBK) with a number of aliphatic alcohols, namely 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol and 1-octanol has been measured at 303.16, K and 455, kHz. The data are used to compute the mutual correlation parameter g_ab, excess molar polarization ΔP, and excess Gibb's free energy ΔG in those mixtures with a view to assessing the suitability of the alcohol as a modifier. The trend of variation of g_ab indicates that octanol could be grouped with other higher alcohols already used as modifier.