Determination of critical micelle

Dominguez, A. Fernandez, A. Gonzalez, N. et al. Determination of Critical Micelle Concentration of Some Surfactants by Three Techniques, /. Chem. Educ. 1997, 74, 1227-1231. 

Determination of critical micelle concentration (CMC) of Butyric Acid by refractometry ... 

Yu, L., et al. (2006), Determination of critical micelle concentrations and aggregation numbers by fluorescence correlation spectroscopy Aggregation of a lipopolysaccharide, Anal. Chim. Acta, 556(1), 216-225. 

Compared to an aqueous solution, nearly all aromatic substances show small spectral changes of several nanometers in the absorption and emission spectra when they are solubilized by micelles. These shifts are mostly similar to shifts that occur when the solvent polarity is decreased. In principle all shifts can be used for the determination of critical micelle concentrations when spectral changes... 

Several NMR parameters are markedly different in the unimeric and self-assembled states and are therefore possible candidates for characterization of surfactant self-association processes. NMR can be a convenient alternative for the determination of critical micelle concentrations (erne s), but an analysis of variable-concentration NMR data generally also provides additional information. We here describe only how self-diffusion can be used to measure the free unimer concentration in simple and complex surfactant systems. In practice it is an alternative to surfactant-selective electrodes to measure surfactant activities. With a two-state assumption, we have, under the normal rapid exchange conditions [cf Eq. (7)],... 

Dominguez Ana, Fernandez Aurora, Gonzalez Noemi, Iglesias Emilia, and Montenegro Luis. Determination of critical micelle concentration of some surfactants by three techniques. J. Chem. Educ. 74 no. 10 (1997) 1227-1231. 

The Reaction of a divalent metal ion M M Mu ) can also be conveniently used as an indicator system for the study of various aspects of micellisation, in particular the determination of critical micelle concentrations (cmc) and rates of micelle formation of anionic surfactants. Before this system can be successfully employed for the study of micellar phenomena, it is necessary to have a clear understanding of the indicator reaction itself in aqueous solution in the absence of surfactant. 

Simonovic, B. and Momirovic, M. 1997, Determination of critical micelle concentration of bile salts by micro-calorimetric titration. Mikrochim. Acta 127, 101. 

Nakamura, H., Sano, A., and Matsuura, K. 1998, Determination of critical micelle concentration of anionic surfactants by capillary electrophoresis using 2-naphthale-nemethanol as a marker for micelle formation. Anal. Sci. 14, 379. 

BaUlet S, Grassl B, Desbrieres J. Rapid and quantitative determination of critical micelle concentration by automatic continuous mixing and static light scattering. Anal Chim Acta 2009 636 236-241. 

Further colloid/surfiice chemistry experiments references coagulation kinetics using Agl hydrosol (y.CAem. diSchulze/Hardy rule using Au hydrosol (ibid. 71(1994)624) determination of critical micelle concentration of surfactants using a colorimetric method ri hid.70(1993)254) density gradient columns displaying acid/base and metal ion (V, Cr, Fe, Co, Ni) equilibria (76iV 63(1986)148). 

Halt SK, Moulik SP (2001) Determination of critical micelle concentration (CMC) of nonionic surfactants by donor-acceptor interaction with iodine and correlation of CMC with hydrophile-lipophile balance and other parameters of the surfactants. J Surfactants Deteig 4 303-309... 

El-Badry, M., Schubert, R. Determination of critical micelle concentration (CMC) of differentpluronics with two differentmethods. Bull. Pharm. Sci. 2002,25(2), 201-205. Anghel, D.F., Galatanu, A.-N. Spectrophotometric determination of critical micelle concentration of ethoxylated alkyIphenols. AwaZefe Universitatii Bucuresti, Fizica 1999, 48, 71-75. 

Priev, A., Zalipsky, S., Cohen, R., Barenholz, Y. Determination of critical micelle concentration of lipopolymers and other amphiphiles comparison of sound velocity and fluorescent measurements. Langmuir 2002, iS(3), 612-617. 

Because of uncertainties in micellar thermodynamics and the nature of micellar species, each procedure for the determination of critical micelle concentrations will... 

Patil et al. fabricated PVC electrodes sensitive to dodecyltri-methylammonium ions (DTA" ) and tetradecyltrimethylammonium ions (TTA" ). The electrode was used for determination of critical micelle concentration of TTAB in water. Moreover the electrode was tested in the presence of nonaqueous polar solvents, i.e., dimethylformamide (DMF) and dimethylsulphoxide (DMSO). 

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