Effect of tetrabutylammonium bromide on the micelles of sodium dodecyl sulfate

被引：90
|
作者：
Mata, J [1 ]
Varade, D
Ghosh, G
Bahadur, P
机构：
[1] S Gujarat Univ, Dept Chem, Surat 395007, India
[2] Bhabha Atom Res Ctr, Mumbai Ctr, IUC DAEF, Bombay 400085, Maharashtra, India
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2004年 / 245卷 / 1-3期
关键词：
CMC; micellar growth; cloud point; DLS; solubilization;
D O I：
10.1016/j.colsurfa.2004.07.009
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Micellar behavior of sodium dodecyl sulfate (NaDS) was examined in the presence of tetrabutylammonium bromide (TBABr) by surface tension, viscosity, dynamic light scattering (DLS), dye solubilization, and cloud point measurements. NaDS showed enhanced solubilization properties and a remarkable decrease in surface tension and critical micelle concentration (CMC) in presence of TBABr. Both viscosity and DLS showed growth in NaDS micelles (50 mM) above 100 mM TBABr concentration; sphere-to-rod transition and micellar growth observed till 200 mM. above which solution undergoes phase separation. The results are explained on the basis of the binding ability of bulky tetrabutylammonium ion on NaDS. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：69 / 73
页数：5
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