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- W2797989006 abstract "In this work novel solvent, poly(ethylene glycol) diacrylate (PEGDA) of average number molecular weight 700, is proposed for design of aqueous biphasic systems with salting-out agents: K3PO4/Na3C6H5O7/K2CO3/MnSO4/Li2SO4/ZnSO4. Ternary liquid-liquid equilibrium experiments were conducted at constant temperature 298.15 K and 0.1 MPa, where binodal curves and tie-lines were determined. The consistency of equilibrium data were checked and confirmed using Othmer-Tobias and Bancroft equations. Density ρ, viscosity η and refractive index nD have been experimentally measured for PEGDA 700 + water system over the temperature range T = (293.15 to 323.15) K with temperature step 5 K and at atmospheric pressure. Excess molar volumes VE, viscosity deviations Δη, deviations in refractive index ΔnD, excess Gibbs free energy of activation of viscous flow ∆G⁎E, partial molar volumes V¯i, excess partial molar volumes V¯iE and it's values at infinite dilutions V¯iE,∞ were calculated from experimental data and used to analyze non-ideal behavior of polymer aqueous solution. Fourier-transform infrared analysis (FT-IR) of PEGDA + water mixture and corresponding pure components was performed at T = 298.15 K in order to gain insight into the molecular structure of the mixture. FT-IR analysis indicates the absence of hydrogen bonding between PEGDA 700 and water. This leads to the conclusion that non-ideal behavior of mixture is contributed to geometrical packing or van der Waals forces of different species." @default.
- W2797989006 created "2018-04-24" @default.
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- W2797989006 date "2018-07-01" @default.
- W2797989006 modified "2023-10-14" @default.
- W2797989006 title "Poly(ethylene glycol) diacrylate as a novel chaotropic compound for design of aqueous biphasic systems" @default.
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- W2797989006 doi "https://doi.org/10.1016/j.molliq.2018.04.023" @default.
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