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Title: | Densities and viscosities of poly(ethylene glycol) 4000 + diammonium hydrogen phosphate + water systems |
Authors: | Regupathi, I. Murugesan, S. Amaresh, S.P. Govindarajan, R. Thanabalan, M. |
Issue Date: | 2009 |
Citation: | Journal of Chemical and Engineering Data, 2009, Vol.54, 3, pp.1100-1106 |
Abstract: | The densities and viscosities of binary and ternary solutions of the poly(ethylene glycol) 4000 (PEG4000) + diammonium hydrogen phosphate + water system were determined at different temperatures [(298.15, 303.15, 308.15, 313.15, and 318.15) K]. The measured density and viscosity data of all the binary and ternary systems were fitted to available empirical correlations, for the corresponding temperatures. The density data show a linear variation with mass fraction of the polymer for all temperatures. The viscosity data of all the solutions were correlated as a function of their mass fraction, using a nonlinear equation, for the five different temperatures covered in the present work. Densities and viscosities of PEG4000 - diammonium hydrogen phosphate two-phase systems have been measured at (298.15, 303.15, 308.15, 313.15, and 318.15) K. The tie line lengths (TLL) of the aqueous two-phase systems have also been estimated, and the effect of the physical properties on the TLL is also reported. 2009 American Chemical Society. |
URI: | http://idr.nitk.ac.in/jspui/handle/123456789/10801 |
Appears in Collections: | 1. Journal Articles |
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