Experimental study of 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 PEGDA mole fraction and temperature. Densities and refractive indices of the investigated mixtures could be fitted well with exponential function vs. composition, including temperature dependence of parameters, while in the case of viscosities polynomial function fits well over a mixture’s composition. In the case of temperature correlation, all three properties (ρ, lnη and nD) exhibit linear trend. The viscosity modeling was performed using four models: UNIFAC-VISCO, ASOG-VISCO, Mc-Allister and Teja-Rice. For application of 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. Also, in the same way binary interaction parameters used in ASOG-VISCO of the following groups were determined: CH2=CH/CH2, CH2=CH/OH, CH2=CH/CH2O and CH2=CH/COO. [Projekat Ministarstva nauke Republike Srbije, br. 172063]

Keywords

• density
• viscosity
• refractive index
• new UNIFAC-VISCO parameters
• new ASOG-VISCO parameters