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Citation: Huang Yao-Xiong. Laser Light Scattering Studies on the Effect of Salts on Micelle Formation of C₈-Lecithin[J]. Acta Physico-Chimica Sinica, ;1992, 8(02): 175-180. doi: 10.3866/PKU.WHXB19920207 shu

Laser Light Scattering Studies on the Effect of Salts on Micelle Formation of C₈-Lecithin

Huang Yao-Xiong

1.
Department of Physics, Sun Yat-Sen University of Medical Sciences Guangzhou 510089

Received Date: 10 September 1990
Available Online: 15 April 1992

The critical micelle concentration (CMC) of aqueous C_8-lecithin solutions was measured as a function of temperature, salt type and concentration by laser light scattering. The CMC's are raised linearly with the concentration of KI, but show a broad maximum in their dependence on the concentration of KCl. As temperature increases, the CMC's of all the systems are raised. The negative values of the ladder spacing and standard enthalpy of the micelle formation deduced from the CMC values indicate that micelle formation is a spontaneous process. Compared with the salt free system, the micelles in the KI added (>/0.35 mol·L~(-1)) solution are easier to form and more stable. The average aggregation number of the micelles and the micelle growth parameter Δμ obtained from the present experiment are quite consistent with those obtained previously from the coexistence curves.
- Laser light scattering; C₈-lecithin; Micelle formation
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Laser Light Scattering Studies on the Effect of Salts on Micelle Formation of C8-Lecithin

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Laser Light Scattering Studies on the Effect of Salts on Micelle Formation of C₈-Lecithin