Abstract
The critical micelle concentration (cmc) values of surfactants obtained by different physical methods do not show any concordance especially in cases when determinations are made in presence of electrolytes. With lauric acid-diethanolamine condensate, the behavior is altogether different.
A comparison of the spectrophotometric and polarographic determinations, with and without the presence of extraneous electrolytes reveals that the cmc values in both cases are almost similar. The results indicate that the cmc values of nonionic surfactants are not affected by acids, bases and salts when added in low concentrations.
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Malik, W.U., Chand, P. Critical micelle concentration of lauric acid-diethanolamine condensate by polarographic and spectrophotometric methods: A comparative study. J Am Oil Chem Soc 43, 446–448 (1966). https://doi.org/10.1007/BF02682411
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DOI: https://doi.org/10.1007/BF02682411