Thermal Behavior of Critical Micelle Concentration from the Standpoint of Flory-Huggins Model

Temperature dependence of the critical micelle concentration (CMC), xCMC, in micellization can be described by ln xCMC = A + BT + C lnT + D/T, which has been derived statistical-mechanically. Here A, B, C, and D are fitting parameters. The equation fits the CMC data better than conventionally used p...

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Bibliographic Details
Published in:Bulletin of the Korean Chemical Society 2009, 30(9), , pp.2001-2006
Main Author: Kyung-Hee Lim
Format: Article
Language:English
Subjects:
화학
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Summary:Temperature dependence of the critical micelle concentration (CMC), xCMC, in micellization can be described by ln xCMC = A + BT + C lnT + D/T, which has been derived statistical-mechanically. Here A, B, C, and D are fitting parameters. The equation fits the CMC data better than conventionally used polynomial equations of temperature. Moreover, it yields the unique(exponent) value of 2 when the CMC is expressed in a power-law form. This finding is quite significant, because it may point to the universality of the thermal behavior of CMC. Hence, in this article, the nature of the equation ln xCMC = A + BT + C lnT + D/T is examined from a lattice-theory point of view through the Flory-Huggins model. It is found that a linear behavior of heat capacity change of micellization is responsible for the CMC equation of temperature. KCI Citation Count: 3
ISSN:0253-2964
1229-5949
DOI:10.5012/bkcs.2009.30.9.2001