期刊
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
卷 21, 期 7, 页码 935-955出版社
MARCEL DEKKER INC
DOI: 10.1080/01932690008913322
关键词
cyclic voltammetry; diffusion coefficient; micelles; micropolarity; detergents
The diffusion coefficients of Triton X-100 micelles with different shape are determined by cyclic voltammetry without any probe. The first CMC (3.2 x 10(-4) mol.L-1) and the second CMC (1.3 x 10(-3) mol.L-1) of Triton X-100 micelles are obtained, and the mechanism of electrochemical reaction for Triton X-100 is deduced. When n-hexanol is added, the diffusion coefficient of Triton X-100 micelles with different shape increases, but the solubilization fraction of n-hexanol decreases in spherical micelles and is almost constant in rodlike ones. However, the micropolarity of micelles decreases in both spherical and rodlike micelles Furthermore, the diffusion coefficient of Triton X-100 micelles with different shape increases with temperature and the diffusion activation energy increases with n-hexanol content.
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