In the process of micelle formation of surfactants, the structure of water in a thin layer around hydrocarbon groups changes. Is it possible or not to determine CMC by measuring changing these properties of water molecules? I ask to provide links.
Dear Yuri,
This may be possible using 1H NMR proton spin-spin and spin-lattice relaxation. Please find below two links I found:
Nuclear Magnetic Resonance Investigation of the Micellar Properties of Two-Headed Surfactant Systems: The Disodium 4-Alkyl-3-sulfonatosuccinates. 2. The Dynamics of the Chains Comprising the Interior of Two-Headed Surfactant Micelles
Michael J. Doyle and D. Gerrard Marangoni *
Department of Chemistry, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia, B2G 2W5, Canada
Langmuir, 2004, 20 (7), pp 2579–2583
DOI: 10.1021/la034931a
Micellization of sodium dodecyl sulfonate and Triton X-100 in polyacrylamide water solution studied by 1H NMR relaxation and two-dimensional nuclear overhauser enhancement spectroscopy, Yuan, HZ., Shen, LF., Du, YR. et al. Colloid Polym Sci (1999) 277: 1026. doi:10.1007/s003960050486
I hope this is helpful. Kind regards, Leo
Dear Leo,
Thanks for the links. There are no studies of water properties for the determination of CMC surfactants. I would like to know the opinion of specialists on the structure of water.
Kind regards, Yuri.
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