Characterization of the adsorbed layer of a mixture of nonionic and cationic hydrocarbon surfactants on silica
作者： K. Esumi , T. Nagahama , K. Meguro
DOI: 10.1007/BF00652536
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摘要: The adsorption of hexadecyl trimethylammonium bromide (HDTAB) and nonylphenyl polyglycol ether (NP20) from mixed aqueous solutions on silica has been investigated. is enhanced at low concentration, but decreased high concentration compared with those the single surfactants. Further, measurements fluorescence spectra pyrene-3-carboxaldehyde ESR 2,2,6,6-tetramethylpiperidinyl-1-oxy in surfactant adsorbed layer indicate that micropolarity affected by feed mole fraction HDTAB, particular over range 0.3–0.7, while microviscosity almost constant same a concentration. This suggests range, ratio HDTAB/NP20 second same.
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