Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

The solubility data of N-tert-butylacrylamide (TBA) in the ethyl acetate, ethanol,dichloromethane, water, formamide, N,N-dimethylformamide (DMF), and N,N-dimethylacetamide (DMAC) at temperatures ranging from (279.15 to 353.15) K were measured by synthetic method. The experimental data were correlated by the van t Hoff plot, modified Apelblat equation, and two local composition models (NRTL and UNIQUAC), respectively. It was found that modified Apelblat equation could obtain the better correlation results than the other three models. In addition, the standard enthalpy, standard entropy and Gibbs free energy change for the solution process were calculated from the solubility data by the van t Hoff analysis. Furthermore, on the basis of the NRTL model and experimental data, the thermodynamic excess functions (GE,SE,HE) of TBA + solvents (ethyl acetate, ethanol, dichloromethane, water, formamide, DMF, DMAC) systems were determined.