Citation: Fei Song, Jie Xu, Wan Guo Hou. Surfactant-free oil/water and bicontinuous microemulsion composed of benzene,ethanol and water[J]. Chinese Chemical Letters, ;2010, 21(7): 880-883. doi: 10.1016/j.cclet.2010.01.029 shu

Surfactant-free oil/water and bicontinuous microemulsion composed of benzene,ethanol and water

Fei Song ^a, ,
Jie Xu ^b ,
Wan Guo Hou ^a,b

a Key Laboratory for Colloid and Interface Chemistry of Education Ministry, Shandong University, Jinan 250100, China;
b College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China

Received Date: 13 November 2009

Fund Project: This research was supported by the National Natural Science Foundation of China (No. 20953003), the Natural Science Foundation of Shandong Province of China (No. Z2008B08 and ZR2009BZ001) and Taishan Scholar Foundation of Shandong Province of China (No. ts20070713).

Generally,a microemulsion consists of oil,water,surfactant and sometimes cosurfactant.Herein,we report a novel surfactantfree microemulsion (denoted as SFME) composed of benzene,water and ethanol without the amphiphilic molecular structure of traditional surfactant.The phase behavior of the ternary system was investigated,finding that there were a single-phase region and a two-phase region in ternary phase diagram.The electrical conductivity measurement was employed to investigate the microregion of the single-phase region,and a bicontinuous microregion and a benzene-in-water (O/W) microemulsion microregion were identified,which was confirmed by freeze-fracture transmission electron microscopy (FF-TEM) observations.The sizes of the microemulsion droplets are in the range of 20-50 nm.
- Surfactant-free microemulsion,
- Phase behavior,
- Conductivity,
- FF-TEM
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