Solubility of supercritical carbon dioxide in polyethylene glycol 4000

Resumo

We present the experimental results on the solubility of supercritical carbon dioxide in polyethylene glycol of molecular weight 4000, namely, the isotherms at T = 313, 323, and 333 K in the pressure range of P = 10–35 MPa. Based on the Sanchez–Lacombe lattice model, the results of solubility are described and the empirical parameters of the binary intermolecular interaction in the system of supercritical CO₂-polyethylene glycol 4000 are obtained.