Surfactant ion electrode measurements of sodium alkylsulfate and alkyltrimethylammonium bromide micellar solutions |
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| Authors: | K. M. Kale E. L. Cussler D. F. Evans |
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| Affiliation: | (1) Department of Chemical Engineering and Materials Science, University of Minnesota, 55455 Minneapolis, MN;(2) Present address: Dupont Experimental Station, Building 293, 19808 Willmington, DE |
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| Abstract: | EMF measurements in water at 25°C have been made using surfactant ion and counterion electrodes on two homologous series of long chain surfactants, the sodium alkylsulfates (R=n-C8H17 to n-C14H29) and the alkyltrimethylammonium bromides (R=C10H21 to C16H33). The data show evidence of association below the critical micelle concentration (CMC) but not of micelle ordering due to coulombic repulsion above this concentration. |
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| Keywords: | Surfactant ion-selective electrode sodium alkylsulfates alkyltrimethylammonium bromides micelles critical micelle concentration |
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