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Phase Behavior and Solubilization of Microemulsion Systems Containing Imidazolium Type Surfactant CnmimBr and Butyric Acid as Cosurfactant

  • Jinling Chai , Haihui Chai , Hao Sun , Ning Liu , Ningning Liu , Hengming Zhang and Zhongchun Liu
Published/Copyright: September 25, 2014
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Abstract

The phase behavior and solubilization of two microemulsion systems 1-alkyl-3-methylimidazolium bromide (CnmimBr, n = 12,14,16)/butyric acid/hexane/brine (5% NaCl) and CnmimBr/1-butanol/hexane/brine (5% NaCl) were studied and compared. The physico-chemical parameters, such as the solubility (∊B) of the cosurfactant, the mass fraction of the cosurfactant in the interfacial layer (AS), and the solubilization ability (SP*) of the two microemulsion systems were calculated and discussed. As the carbon chain length of CnmimBr molecules increases, SP* increases, and the difference of SP* values between the two microemulsion systems is reduced. The effects of aqueous and oleic phases and temperatures on the phase behavior and solubilization of C14mimBr/butyric acid/alkane/aqueous phase microemulsion systems were also discussed.

Kurzfassung

Das Phasenverhalten und die Solubilisierung von zwei Mikroemulsionen bestehend aus 1-Alkyl-3-methylimidazoliumbromid (CnmimBr, n = 12, 14, 16)/Butansäure/Hexan/wässrige Salzlösung (5% NaCl) und CnmimBr/1-Butanol/Hexan/wässrige Salzlösung (5% NaCl) wurden studiert und miteinander verglichen. Die physikalisch-chemischen Parameter, wie die Löslichkeit des Co-Tensids (∊B), der Massenbruch des Co-Tensids in der Grenzfläche (AS) und die Lösefähigkeit (SP*) der beiden Mikroemulsionen wurden bestimmt und diskutiert. Mit zunehmender Kohlenstoffkettenlänge des CnmimBr-Moleküls, nimmt SP* zu und die Differenz zwischen den SP*-Werten der beiden Mikroemulsionen verringert sich. Der Einfluss der wässrigen und öligen Phase und der der Temperatur auf das Phasenverhalten und die Solubilisierung von Mikroemulsionen des Typs C14mimBr/Butansäure/Alkan/wässrige Phase wurden ebenfalls diskutiert.


* Correspondence address Mr. Prof. Jinling Chai, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong 250014, P.R. China. E-Mail:

Jin-Ling Chai, born in 1961, Shandong province of China, is a chemistry professor. He studied solvent extraction from 1985 to 1988 in Shandong University and got a M.Sc. degree in 1988. From 1988 to 1999, he worked in department of chemistry, Shandong normal university, teaching physical chemistry. He was a PhD candidate in Shandong University from 2000 to 2003 and obtained a PhD degree in 2003. Since 2003, he has worked in Shandong normal university, researching physical chemistry of surfactant solutions. Special fields of interest are physicochemical properties and applications of surfactant aggregates.

Hai-Hui Chai, born in 1988, Shandong province of China, is an Msc candidate of Shandong Normal University. Her interest of research is physical chemistry of surfactant solutions.

Hao Sun, born in 1985, Shandong province of China, is an Msc candidate of Shandong Normal University. His interest of research is physical chemistry of surfactant solutions.

Ning Liu, born in 1988, Shandong province of China, is an Msc candidate of Shandong Normal University. Her interest of research is physical chemistry of surfactant solutions.

Ning-Ning Liu, born in 1989, Shandong province of China, is an Msc candidate of Shandong Normal University. Her interest of research is physical chemistry of surfactant solutions.

Heng-Ming Zhang, born in 1988, Shandong Province of China, an Msc candidate of Shandong Normal University. His interest of research is physical chemistry of surfactant solutions.

Zhong-Chun Liu, born in 1988, Shandong Province of China, an Msc candidate of Shandong Normal University. Her interest of research is physical chemistry of surfactant solutions.


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Received: 2014-10-14
Revised: 2014-04-08
Published Online: 2014-09-25
Published in Print: 2014-09-15

© 2014, Carl Hanser Publisher, Munich

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