Title of article :
Prediction of liquid–liquid phase diagrams of aqueous salt+PEG systems using a thermodynamic model
Author/Authors :
Salabat، نويسنده , , Alireza، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Abstract :
In this study a thermodynamic model for the phase behavior of aqueous salt+polymer solutions is developed. The model is based on the solution theory of Hill, which included scaling laws for the polymer molecular mass dependence and Pitzer–Debye–Hückel theory. This model was tested for systems composed of two different molecular mass of polyethylene glycols (PEG) and five different inorganic salts. All the model parameters were determined from independent measurements. The agreement between the experimental and predicted phase diagrams by this model is good.
Keywords :
Polymer–salt system , Aqueous two-phase system , phase diagram , Thermodynamic model