EFFECT OF VINYL ALCOHOL PLUS SODIUM ACRYLATE COPOLYMER GEL ON THE VAPOR-LIQUID-EQUILIBRIUM OF 1-PROPANOL PLUS WATER

The activities of 1-propanol and water in the solvent + polymeric gel (vinyl alcohol + sodium acrylate copolymer) binary systems and the vap or-liquid equilibrium (VLE) compositions of 1-propanol + water system containing polymeric gel were measured at 298.15 K by using flow type equipment which can detect the concentrations of solvents in the vapor phase and the partial pressures of each solvent. Helium gas was used as the carrier gas. The mole fraction of the vapor phase was determine d by gas chromatography with a concentration accuracy of +/-0.4%. And the mole fraction of the liquid phase was obtained from feed compositi ons. The activity of 1-propanol in the 1-propanol + polymeric gel solu tion scarcely changed with an increase of polymeric gel, while the act ivity of water decreased with an increase in the concentration of poly meric gel in the binary systems. It was found that the mole fraction o f l-propanol in the vapor phase increases with an increase in the conc entration of polymeric gel in the liquid phase of the ternary system.