Typical Results for Polyethylene Glycol

A recent development of the modified UNIFAC (Dortmund) model is the introduction of a new flexible main group enabling the calculation of phase equilibria and thermodynamic excess properties for various systems containing Polyethylene glycol (PEG 200, 300, 400, 600, 1000, 1500, 2000 and 3270).


[Limiting Activity Coefficients] [Mixing Enthalpies] [Vapor-Liquid Equilibria]

Limiting Activity Coefficients

Example 1 shows predicted limiting activity coefficients of Benzene in four Polyethylene glycols with increasing molecular weights together with some experimental data from the Dortmund Data Bank.

Limiting Activity Coefficients

Mixing Enthalpies

Example 2 shows predicted mixing enthalpies of 1,2-Dimethoxymethane and PEG 400 together with a set of experimental data points.

Mixing Enthalpy

Vapor-Liquid Equilibria

The examples 3 and 4 show predicted vapor-liquid equilibria of Benzene...

VLE Example Benzene/PEG 400

...and Ethanol in PEG 400 at different temperatures together with experimental data.

VLE of Ethanol/PEG 400 at different Temperatures

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An Addendum to

“Further Development of Modified UNIFAC (Dortmund):
Revision and Extension 6”

has been published in the Journal of Chemical and Engineering Data by the UNIFAC Consortium.

Read more …