Densities and Viscosities of Binary and Ternary Mixtures and Aqueous Two-Phase System of Poly(ethylene glycol) 2000+Diammonium Hydrogen Citrate plus Water at Different Temperatures

作者：Kalaivani Sivakumar; Srikanth Chunduru K; Regupathi Iyyaswami^*

来源：Journal of Chemical and Engineering Data, 2012, 57(9): 2528-2534.

DOI：10.1021/je300571b

The densities and viscosities of aqueous solutions of poly(ethylene glycol) (PEG-2000) and diammonium hydrogen citrate were determined for mass fractions from 0.05 to 0.5 at different temperatures of (298.15, 303.15, 308.15, 313.15, and 318.15) K The density data show a linear variation with mass fraction of the polymer and salt for all temperatures. The viscosity data of PEG 2000 and diammonium hydrogen citrate solutions were correlated as a function of mass fraction, using a nonlinear equation, for the five different temperatures covered in the present work. Densities and viscosities of PEG diammonium hydrogen citrate two-phase systems have also been measured at (298.15, 303.15, 308.15, 313.15, and 318.15) K and are correlated with composition. The tie-line lengths (TLL) of the aqueous two-phase systems have also been estimated.

• 出版日期2012-9