Thermodynamic properties of mixed surfactants of dodecyltrimethylammonium bromide and 1-dodecyl-3-methylimidazolium bromide

被引：9
|
作者：
Zheng, Peizhu [1 ]
Cai, Dongxing [1 ]
Zhao, Jihua [1 ]
Shen, Weiguo [1 ,2 ]
机构：
[1] Lanzhou Univ, Dept Chem, Lanzhou 730000, Gansu, Peoples R China
[2] East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2017年 / 113卷
基金：
中国国家自然科学基金;
关键词：
Mixed surfactants; Micellization; Margules equation; Thermodynamic properties; Excess properties; CATIONIC GEMINI SURFACTANT; LIQUID-PHASE BEHAVIOR; AQUEOUS-SOLUTIONS; SELF-AGGREGATION; BINARY-MIXTURES; INTERFACIAL BEHAVIOR; ANIONIC SURFACTANTS; MICELLE FORMATION; IONIC LIQUIDS; MICELLIZATION;
D O I：
10.1016/j.jct.2016.10.039
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The mixed surfactants of dodecyltrimethylammonium bromide (DTAB) and 1-dodecyl-3-methylimidazolium bromide (C(12)mimBr) in aqueous solutions were studied by measurement of electrical conductivity and isothermal titration microcalorimetry (ITC). The critical micelle concentrations (cmc) and the degree of dissociations of counter ions were determined for this system at various surfactant compositions, and the thermodynamic properties of micellization were evaluated. A one-parameter Margules equation was used to fit the cmc values to calculate the mole fraction, the activity coefficients of two surfactant components and the excess properties in mixed micelles. (C) 2016 Elsevier Ltd.
引用
收藏
页码：394 / 398
页数：5
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