Effect of solvophobic interactions on the molecular sorption of organic substances on a carboxylic ionite from water-nonelectrolyte binary solutions

The molecular sorption of four aliphatic alpha -amino acids and four antine oplastic substances on H+-form monocarboxycellulose from six water-nonelect rolyte (NE) solutions at 293 +/- 1 K were studied. Gibbs free energy of sor ption-NE mole fraction (N-2) isotherms of sorption from binary solutions we re measured and examined; the contributions from polar and solvophobic inte ractions were considered. It was established that, at N-2 greater than or e qual to 0.3, the solvophobic effect experiences a reversal, which is accomp anied by a shift of the sorption equilibrium to the binary solution. It was demonstrated that this phenomenon is closely related to the microstratific ation of binary solutions.