Molecular structure of a water-polyethylene glycol-KOH system, according to densitometry and viscometry data |
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Authors: | E. A. Masimov B. G. Pashayev H. Sh. Hasanov S. I. Musayeva |
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Affiliation: | 1. Baku State University, Baku, 1148, Azerbaijan
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Abstract: | The dynamic viscosity and density of a water-polyethylene glycol-KOH system are measured at temperatures of 293.15 to 323.15 K in concentrations ranging from 0.00001 and 0.001 (mole fractions). The activation parameters of viscous flow (ΔG η ≠ , ΔH η ≠ , and ΔS η ≠ ), structural temperature (T 0), the partial molar volume of polyethylene glycol (PEG) in solution $left( {tilde V} right)$ , intrinsic viscosity([η]), and the Huggins constant (K H), are calculated. It is found that PEG has a structuring effect on water in water-PEG and water-PEG-KOH systems, with the PEG structuring effect in the latter being somewhat attenuated by the destructuring influence of KOH. |
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