Influence of salts on poly(methyl vinyl ether) at the air/aqueous solution interface. Part 2.—Adsorption from solution
Abstract
Surface tension measurements have been made on aqueous solutions of poly(methyl vinyl ether) containing electrolytes. The surface tension of polymer solutions fell linearly with increasing concentration of NH4Br, LiCl, NaNO3, Ca(NO3)2 Al(NO3)3, NaF, CsF and KF. With the exception of calcium and aluminium nitrates, the rate of decrease in the surface tension correlated with the electrostriction properties of the salts. The results are discussed in terms of the McDevit–Long theory.