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Phase behavior and properties of reverse vesicles in salt-free catanionic surfactant mixtures
Li, HG; Hao, JC; Wu, ZH
2008
发表期刊JOURNAL OF PHYSICAL CHEMISTRY B
卷号112期号:12页码:3705-3710
通讯作者[Li, Hongguang ; Hao, Jingcheng] Shandong Univ, Minist Educ, Key Lab Colliod & Interface Chem, Jinan 250100, Peoples R China ; [Wu, Zhonghua] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要Salt-free 1:1 cationic/anionic (catanionic) surfactant mixture tetradecyltrimethylammonium laurate (TTAL) could be prepared by mixing equimolar tetradecyltrimethylammonium.hydroxide (TTAOH) and lauric acid (LA) in water. Given the condition of suitable range of weight fraction of TTAL in total surfactant, rho = W-TTAL/(W-TTAL + W-LA), and at existence of a small amount of water, it was found that the mixtures of so-obtained TTAL and LA could spontaneously form stable reverse vesicles in various organic solvents including toluene, tert-butylbenzene, and cyclohexane. The reverse vesicle phase shows a blue color against room light and exhibits strong birefringence under polarized microscope. The reverse vesicles are very sensitive to temperature change. Increasing temperature could make the p values within which reverse vesicles were constructed move to higher values. In organic solvents of alkanes such as n-heptane, reverse vesicles could still form but become unstable upon time and centrifugation. Increasing temperature could accelerate phase separation, and finally a gel-like bottom phase was usually observed. Interestingly, the stable reverse vesicles formed by so-called salt-free catanionic surfactant mixtures still show some resistance against adding inorganic salts. They can trap inorganic ions such as Zn2+ and S2- into their hydrophilic layers. This opens the door for template applications of reverse vesicles to prepare inorganic nanoparticles.
学科领域Chemistry
研究领域[WOS]Chemistry ; Chemistry
DOI10.1021/jp7112329
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语种英语
研究领域[WOS]Chemistry ; Chemistry
WOS类目Chemistry, Physical
WOS记录号WOS:000254209300017
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被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239931
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Li, HG,Hao, JC,Wu, ZH. Phase behavior and properties of reverse vesicles in salt-free catanionic surfactant mixtures[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2008,112(12):3705-3710.
APA Li, HG,Hao, JC,&Wu, ZH.(2008).Phase behavior and properties of reverse vesicles in salt-free catanionic surfactant mixtures.JOURNAL OF PHYSICAL CHEMISTRY B,112(12),3705-3710.
MLA Li, HG,et al."Phase behavior and properties of reverse vesicles in salt-free catanionic surfactant mixtures".JOURNAL OF PHYSICAL CHEMISTRY B 112.12(2008):3705-3710.
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