Abstract
The electrical conductivities of binary systems of caprolactam tetrabutylammonium bromide ionic liquid + solvent (solvent = water, ethanol, 2-propanol, 1-butanol) systems were measured at ionic liquid mole fractions from (3.60·10−4 to 6.82·10−2) and temperatures from (290.55 to 342.25) K. The conductivities of the mixtures increase with increasing temperature, increasing concentration of ionic liquid, and decreasing caprolactam/tetrabutylammonium bromide mole ratio in the ionic liquid. The conductivity values of the binary systems (ionic liquid + solvent) decrease with the solvent in the following order: water > ethanol > 2-propanol > 1-butanol.
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