Micellization in sodium deoxycholate solutions |
| |
Authors: | L R Bogdanova O I Gnezdilov B Z Idiyatullin R Kh Kurbanov Yu F Zuev O G Us’yarov |
| |
Institution: | 1.Kazan Institute of Biochemistry and Biophysics, Kazan Scientific Center,Russian Academy of Sciences,Kazan, Tatarstan,Russia;2.Zavoiskii Physicotechnical Institute, Kazan Scientific Center,Russian Academy of Sciences,Kazan, Tatarstan,Russia;3.Department of Chemistry,St. Petersburg State University,Staryi Peterhof, St. Petersburg,Russia |
| |
Abstract: | NMR self-diffusion, tensiometry, and measurement of solubilization capacity are employed to comparatively study micellization
in aqueous solutions of a facial amphiphilic compound, sodium deoxycholate (NaDC), and a conventional micelle-forming sodium
dodecyl sulfate. Based on the two-state model, which is commonly used to analyze the data of NMR diffusometry, a method is
proposed for determining variable sizes of NaDC micelles. It is shown that, in the concentration range from the critical micelle
concentration to 0.1 M, the sizes of NaDC micelles monotonically increase. At comparable sizes of molecules of the examined
surfactants, NaDC micelles are characterized by noticeably smaller aggregation numbers and solubilization capacity than sodium
dodecyl sulfate due to the rigid structure of NaDC molecules, their facial amphiphilicity, and a low value of hydrophilic-lipophilic
balance. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|