Interactions between nonpolar surfaces in mixed solutions of cationic and nonionic surfactantsстатья
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Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
Аннотация:Abstract
—The interaction energy between hydrophobic SiO2 particles in aqueous solutions of a cationic surfactant (dodecylpyridinium bromide, DDPB), a nonionic surfactant (Triton X-100, TX-100), and their mixed solutions was measured as a function of concentration. Synergism has been observed in mixed surfactant solutions:
the surfactant concentration required for achieving the set interaction energy in the mixed solutions was lower than in the solutions of the individual surfactants. The molecular interaction parameters in surfactant mixtures were calculated using the Rosen model. Chain–chain interactions between nonionic and cationic surfactants were suggested as the main reason for the synergism.