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Citation: Liu Tian-Qing, Guo Rong, Shen Ming, Yu Wei-Li. Determination of the Diffusion Coefficients of Micelle and the First CMC and Second CMC in SDS and CTAB Solution[J]. Acta Physico-Chimica Sinica, ;1996, 12(04): 337-340. doi: 10.3866/PKU.WHXB19960410 shu

Determination of the Diffusion Coefficients of Micelle and the First CMC and Second CMC in SDS and CTAB Solution

1.
Department of Chemistry,Yangzhou University,Yangzhou 225002

Received Date: 3 August 1995
Available Online: 15 April 1996

A new electrochemical method is showed for study of physical chemisty character of surfactant systems, and particularly determination of second CMC. The diffusion coefficients of SDS and CATB micelles with different shapes are determined by cyclic voltammetry without any probe, and the first CMC and second CMC are obtained from the intersections of diffusion coefficients vs concentration curve (first CMC and second CMC are 8.0 ×10-3mol•L-1 and 5.6 ×10-2mol•L-1 for SDS, 8.9×10-4 and 2.1 ×10-2 mol•L-1 for CTAB)
- Micelle,
- First CMC,
- Second CMC,
- Cyclic Voltammetry,
- Diffusion Coefficient
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