Determination of critical micelle concentration of some surfactants by three techniques
Determination of critical micelle concentration of some surfactants by three techniques
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DOI：
10.1021/ed074p1227
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发表时间：
1997-10-01
影响因子：
3
通讯作者：
Montenegro, L
中科院分区：
文献类型：
--
作者：
Dominguez, A;Fernandez, A;Montenegro, L
The laboratory experiments described in this work present the CMC-determination of some surfactants by following three different methods, which require the use of the very common techniques in physical chemistry laboratories, such as UV-Vis spectroscopy, luminescence spectroscopy, and electrical conductivity.In performing these experiments, the CMC of a surfactant is determined by measuring a change (i) in the UV-Vis spectra of benzoylacetone, (ii) in the fluorescence emission spectra of pyrene monomers, and (iii) in the electrical conductivity of an ionic-surfactant solution, as the concentration of the surfactant increases.The CMC values corresponding to the surfactants sodium dodecyl sulfate, tetradecyl trimethylammonium bromide and polyoxyethylene,9-dodecyl ether determined in this work following the three indicated methods and in the absence and presence of electrolytes and non-electrolytes are reported.
