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KMID : 0380319800260000047
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Journal of Korean Research Institute for Better Living
1980 Volume.26 No. 0 p.47 ~ p.54
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Solvent Effect on the Formation of Cetyl Trimethyl Ammonium Bromide Micelle (Ⅰ)
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Abstract
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The light scattering experiment of the CTAB surfactant soluton is carried out with Aminco Absolute Light Scattering Photometer at 25 C.
The behavior of CTAB-DMSO-H_2O solution depending upon the solvent composition (DMSO molefractions are 0.00, 0.05, 0.098 and 0.201 respectively) has been observed by measuring the Rayleigh Ration of the solution as a function on CTAB concentration. As the molefraction of the DMSO is increased, the critical micelle concentration (cmc) of the sur-factant is also increased while the aggregaion number of micelle is decteased. This can be explained in such a way that as the DMSO composition is increased, not only the stability of CTAB micelle is weakened but also the micelle size becomes small. Moreover, DMSO molecule is regarded to have an inhibitive effect on the formation of CTAB micelle due to its dominant affinity to the water molecule.
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