کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
220860 | 463356 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of KBr and n-decanol on the properties of cetyltrimethylammonium bromide micelles in aqueous solutions: A microelectrode voltammetric study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of KBr and n-decanol on the properties of cetyltrimethylammonium bromide micelles in aqueous solutions: A microelectrode voltammetric study Effects of KBr and n-decanol on the properties of cetyltrimethylammonium bromide micelles in aqueous solutions: A microelectrode voltammetric study](/preview/png/220860.png)
چکیده انگلیسی
A platinum disc microelectrode was employed to measure the diffusion coefficient of cetyltrimethylammonium bromide, CTABr, aggregates in aqueous solution and in the presence of additives: KBr, n-decanol, and KBr + n-decanol. Other micellar parameters such as the hydrodynamic radii and aggregation numbers were calculated from the micellar diffusion coefficients. The data obtained were rationalized in terms of electrolyte-induced aggregate size increase and sphere-to-rod morphology change. In the presence of solubilized n-decanol, this transition occurred at a lower KBr concentration, confirming that the micelle surface charge density, hence its dimension, is strongly influenced by adsorption of the fatty alcohol.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 603, Issue 2, 15 May 2007, Pages 275–280
Journal: Journal of Electroanalytical Chemistry - Volume 603, Issue 2, 15 May 2007, Pages 275–280
نویسندگان
Tiago Luiz Ferreira, Omar A. El Seoud, Mauro Bertotti,