Densities and Volumetric Properties of Butyl Acrylate + 1-Butanol, or +2-Butanol, or +2-Methyl-1-propanol, or +2-Methyl-2-propanol Binary Mixtures at Temperatures from 288.15 to 318.15 K

Abstract

The densities, ρ, of binary mixtures of butyl acrylate with 1-butanol, 2-butanol, 2-methyl-1-propanol, and 2-methyl-2-propanol, including those of the pure liquids, were measured over the entire composition range at temperatures of (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15) K and atmospheric pressure. From the experimental data, the excess molar volume $$ V_{\text{m}}^{\text{E}} $$ , partial molar volumes $$ \overline{V}_{\text{m,1}} $$ and $$ \overline{V}_{\text{m,2}} $$ , and excess partial molar volumes $$ \overline{V}_{\text{m,1}}^{\text{E}} $$ and $$ \overline{V}_{\text{m,2}}^{\text{E}} $$ , were calculated over the whole composition range as were the partial molar volumes $$ \overline{V}_{\text{m,1}}^{^\circ } $$ and $$ \overline{V}_{\text{m,2}}^{^\circ } $$ , and excess partial molar volumes $$ \overline{V}_{\text{m,1}}^{{^\circ {\text{E}}}} $$ and $$ \overline{V}_{\text{m,2}}^{{^\circ {\text{E}}}} $$ , at infinite dilution,. The $$ V_{\text{m}}^{\text{E}} $$ values were found to be positive over the whole composition range for all the mixtures and at each temperature studied, indicating the presence of weak (non-specific) interactions between butyl acrylate and alkanol molecules. The deviations in $$ V_{\text{m}}^{\text{E}} $$ values follow the order: 1-butanol < 2-butanol < 2-methyl-1-propanol < 2-methyl-2-propanol. It is observed that the $$ V_{\text{m}}^{\text{E}} $$ values depend upon the position of alkyl groups in alkanol molecules and the interactions between butyl acrylate and isomeric butanols decrease with increase in the number of alkyl groups at α-carbon atom in the alkanol molecules.