Js. Choi et al., MEASUREMENT AND CORRELATION OF VAPOR-LIQUID-EQUILIBRIA IN POLYMER-SOLUTIONS CONTAINING POLYSTYRENE WITH POLYMER ASOG, Fluid phase equilibria, 111(1), 1995, pp. 143-156
A gas chromatographic method is used to measure the activities of solv
ents which have a range of finite concentrations in polymer solutions.
Experimental data are presented for 8 binary solvent/polystyrene syst
ems at 393.15 and 423.15 K. The polymer ASOG is proposed to be correla
ted with the activities of solvents in polymer solutions, and consists
of the original ASOG and the empirical modification of free volume. F
or 8 binary solvent/polystyrene systems containing nonpolar and modera
tely polar solvents, the polymer ASOG was successful to correlate with
experimental data within the range of 1% error.