AbstractThe competition between methyl orange dye and various polymers gelatin, poly(vinyl alcohol), polyacrylamide, etc. for the binding sites on quaternized poly(1‐vinylimidazole) in aqueous solutions was studied. The method used was based on a well‐known effect of dissolved polyelectrolytes on the rate of diffusion of solutes through semipermeable membranes. The final results are expressed as the ratio ofC1″(bound)/C1′(bound), whereC1″(bound) is the amount of the solute adsorbed to a mixture of two polymers andC1(bound) is the amount of solute bound to a single polymer. In the case of quaternized poly(1‐vinylimidazole) it was found that as much as 15 of the solute bound to the polymer can be replaced by another, “nonadsor
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