期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 224, 期 1, 页码 198-201出版社
ACADEMIC PRESS INC
DOI: 10.1006/jcis.1999.6639
关键词
adsolubilization of 2-naphthol; alumina; sodium dodecyl sulfate; surfactant-adsorbed layer
Adsolubilization behavior of 2-naphthol on alumina with adsorption of sodium dodecyl sulfate (SDS) at pH 3.5 in the presence of 10 mmol dm(-3) NaCl was reexamined. The adsolubilized amount of 2-naphthol increased sharply and reached a maximum, then decreased with SDS concentration, The decrement of the adsolubilized amount began below the critical micelle concentration of SDS. From the dispersion isotherm, it is demonstrated that the decrement of adsolubilization of 2-naphthol is not due to the partition of 2-naphthol between the SDS adsorbed layer and SDS micelles, but is due to the difference of SDS adsorption states such as monolayers and admicelles. (C) 2000 Academic Press.
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