Ionic liquids as modulators of the critical micelle concentration of sodium dodecyl sulfate

被引：142

作者：

Beyaz, A ^{[1
]}

Oh, WS ^{[1
]}

Reddy, VP ^{[1
]}

机构：

[1] Univ Missouri, Dept Chem, Rolla, MO 65409 USA

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2004年 / 35卷 / 02期

关键词：

CIVIC; surfactants; SDS; RTILs; UV-Vis spectroscopy;

D O I：

10.1016/j.colsurfb.2004.02.014

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS), an anionic surfactant, has been investigated in aqueous solutions of a variety of room temperature ionic liquids (RTILs): 1,3-dimethylimidazolium iodide (Me2IM-I, 2), 1-butyl-3-methylimidazolium chloride (BMIM-Cl, 3), 1-hexyl-3-methylimidazolium chloride (HxMIM-Cl, 4), 1-methyl-3-octylimidazolium chloride (MOIM-Cl), 5, and 1-methyl-3-octylimidazolium tetrafluoroborate (MOIM-BF4, 6). The CMC of SDS is shown to correlate with the nature of the alkyl groups in the RTILs; SDS showed appreciably higher CMCs in presence of ionic liquids 2 and 3, whereas in the presence of ionic liquids 4, 5, and 6 much smaller CMCs were observed. The nature of the gigenions, Cl- or BF4-, has no noticeable effect on the observed CMC values. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：119 / 124

页数：6

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