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| - Effect of Vinyl Alcohol + Sodium Acrylate Copolymer Gel on theVapor−Liquid Equilibrium Compositions of Ethanol + Water and2-Propanol + Water Systems
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| - The vapor−liquid equilibrium (VLE) compositions of ethanol + water and 2-propanol + water systemscontaining polymeric gel (vinyl alcohol + sodium acrylate copolymer) were measured at 298.15 K by usingflow-type equipment that can detect the concentrations of solvents in the vapor phase and the partialpressures of each solvent. Helium gas was used as the carrier gas. The mole fraction of the vapor phasewas determined by gas chromatography with a concentration accuracy of ±0.4%, and the mole fractionof the liquid phase was obtained from feed compositions. It was found that the mole fraction of alcoholin the vapor phase increases with an increase in the concentration of polymeric gel in the liquid phase.
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