Abstract
The conditions derived previously for three types of synergism in aqueous binary mixtures of surfactants-mixed micelle formation, surface tension reduction efficiency, and surface tension reduction effectiveness-are reviewed and verified by use of experimental data from the chemical literature. They involve the experimentally determined parameters, β and βM, related to the interaction between the two surfactants in the mixed monolayer at the aqueous solution/air interface and in the mixed micelle, respectively. The experimental data needed to determine whether a binary surfactant system is capable of synergism in these respects are: (a) the surface tension/log concentration curves of the individual surfactants in the vicinity of their critical micelle concentrations (cmc); (b) the cmc of at least one mixture of the two surfactants; and (c) the solution phase concentration of at least one mixture of the two surfactants needed to produce a surface tension attainable by both individual surfactants. From the available data, some tentative generalizations regarding the effect of chemical structure and the molecular environment of the values of β and βM have been made.
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Visiting Scholar from the People’s Republic of China.
An erratum to this article is available at http://dx.doi.org/10.1007/BF02679803.
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Rosen, M.J., Hua, X.Y. Synergism in binary mixtures of surfactants: II. Some experimental data. J Am Oil Chem Soc 59, 582–585 (1982). https://doi.org/10.1007/BF02636329
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DOI: https://doi.org/10.1007/BF02636329