Nucleation of single and mixed straight chain surfactants from dilute aqueous solutions

Nucleation parameters have been measured for dilute aqueous solutions of sodium laurate, sodium myristate and mixtures of these two straight chain surfactants. For single surfactant systems the metastable zone width decreases with increasing surfactant concentration and longer chain length. Both the...

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Bibliographic Details
Published in:Journal of crystal growth 1996-09, Vol.166 (1-4), p.189-194
Main Authors: van Gelder, R.N.M.R., Roberts, K.J., Chambers, J., Instone, T.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from solutions
Materials science
Methods of crystal growth
physics of crystal growth
Physics
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Summary:Nucleation parameters have been measured for dilute aqueous solutions of sodium laurate, sodium myristate and mixtures of these two straight chain surfactants. For single surfactant systems the metastable zone width decreases with increasing surfactant concentration and longer chain length. Both the enthalpy and entropy of dissolution as calculated from the saturation temperature using the van't Hoff equation were bigger for sodium myristate than for sodium laurate. For surfactant mixtures where one of the components is dominantly present larger metastable zone widths were found, whereas a 1 : 1 mixture was found to result in an intermediate metastable zone width.
ISSN:0022-0248
1873-5002
DOI:10.1016/0022-0248(96)00140-6