It has been found that direct measurement of selective sorption of solvent mixture on the loosely crosslinked gels with low polymer concentration would yield some information on the preferential solvation and also on the nature of the interactions. Experimental data obtained by refractometry and sorption measurements carried out with the system poly(vinyl alcohol)‐water‐n‐propanol have shown the proposed way of approximation to be successful. Based on the experimental results a solvate model for this system was proposed in which the n‐propanol is bound to the polymer chain by both hydrogen and hydrophobic bonds.
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Nagy et al. (1972) studied this question.
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