Experimental study of the thermodynamic and transport properties of binary mixtures of poly(ethylene glycol) diacrylate and alcohols at different temperatures

Abstract

Experimental density r, refractive index nD and viscosity h data of three binary systems of poly(ethylene glycol) diacrylate (PEGDA) + ethanol, + 1-propanol and + 1-butanol were measured at eight temperatures from 288.15 to 323.15 K, with temperature step of 5 K, and at atmospheric pressure. The experimental data were correlated as a function of the PEGDA mole fraction and temperature. The densities and refractive indices of the investigated mixtures could be fitted well with exponential function vs. composition, including the temperature dependence of the parameters, while in the case of the viscosities, a polynomial function fits well the composition of the mixtures. In the case of the temperature correlation, all three properties (ρ, ln η and nD) exhibited linear trends. The viscosity modeling was performed using four models: the UNIFAC–VISCO, ASOG–VISCO, McAllister and the Teja–Rice models. For application of the UNIFAC–VISCO model, interaction parameters of following groups were determined: CH2=CH/CH3, CH2=CH/CH2, CH2=CH/OH, CH2=CH/CH2O and CH2=CH/COO. In addition, in the same way, the binary interaction parameters used in the ASOG–VISCO model of the following groups were determined: CH2=CH/CH2, CH2=CH/OH, CH2=CH/CH2O and CH2=CH/COO.