引用本文:
刘天晴, 郭荣, 沈明, 于卫里. SDS和CTAB水溶中胶束扩散系数及第一、第二CMC测定[J]. 物理化学学报,
1996, 12(04): 337-340.
doi:
10.3866/PKU.WHXB19960410
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
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
SDS和CTAB水溶中胶束扩散系数及第一、第二CMC测定
English
Determination of the Diffusion Coefficients of Micelle and the First CMC and Second CMC in SDS and CTAB Solution
Abstract:
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)
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Key words:
-
Micelle
- / First CMC
- / Second CMC
- / Cyclic Voltammetry
- / Diffusion Coefficient
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