Abstract
For a sodium salt of α sulfonatomyristic acid methyl ester (14SFNa), one of the α-SFMe series surfactants, critical micellization concentration (CMC), solubility and degree of counterion binding (β) were determined by means of electroconductivity measurements at different temperatures (at every 5 °C) ranging from 15 to 50 °C. The phase diagram of 14SFNa in pure water was constructed from the CMC- and solubility-temperature data, in which the Krafft temperature (critical solution temperature) was found around 0 °C. The changes in the Gibbs energy, ΔG om , enthalpy,ΔH om , and entropy, ΔS om , upon micelle formation as a function of temperature were evaluated taking β values into calculation.
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Fujiwara, M., Okano, T., Nakashima, T.H. et al. A temperature study on critical micellization concentration (CMC), solubility, and degree of counterion binding of α-sulfonatomyristic acid methyl ester in water by electroconductivity measurements. Colloid Polym Sci 275, 474–479 (1997). https://doi.org/10.1007/s003960050106
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DOI: https://doi.org/10.1007/s003960050106