ISSN:
1435-1536
Keywords:
Key words Critical micellization concentration (CMC)
;
solubility
;
degree of counterion binding
;
Krafft point
;
α-sulfonatomyristic acid methyl ester
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
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 electrocon-ductivity 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 0 m, enthalpy, ΔH 0 m, and entropy, ΔS 0 m, upon micelle formation as a function of temperature were evaluated taking βvalues into calculation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003960050106
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