Mathematical modelling of phase equilibria for supercritical CO2 and polyethylene glycol of various molecular weights

- Modelling phase equilibria of PEG of various molecular weights and CO2.
- Sanchez-Lacombe EOS and the Statistical Associating Fluid Theory were applied.
- Binary interaction parameters optimized for the best fit with experimental data.
- Assessing the effect of PEG molecular weight on binary interaction parameters.