Journal
COLLOID JOURNAL
Volume 70, Issue 2, Pages 184-188Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1061933X08020105
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Conductometry is employed to measure the critical micellization concentrations of homologous sodium monoalkyl sulfosuccinates with double-charged surface-active anions and alkyl radicals R containing 10-14 carbon atoms (ROOCCH2CH(SO3Na)COONa). The degrees of counterion binding with micelles and the Gibbs energy Delta G(m) of micellization are calculated. The incorporation of an additional ionogenic group into a surfactant molecule somewhat decreases Delta G(m). For the examined series of surfactants, the increment of Delta G(m) due to one methylene group is -4.44 kJ/mol.
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