Abstract
PVT properties were measured for mixtures of 1-octanol with fractionation cuts of poly(ethylene glycol)-200 or poly(ethylene glycol)-600 at temperatures from 298 K to 338 K and pressures up to 30 MPa. Excess volumes are positive for these two polymer solution systems. The pressure effect on the liquid densities was represented accurately by the Tait equation, with which the isothermal compressibilities were calculated. Both the Flory−Orwoll−Vrij and the Schotte equations of state were employed to correlate the experimental specific volumes. Accurate results were obtained from these two equations.
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