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Citation: ZHAO Hui, LU Fu-Sui, LI Pei-Qiang. Effect of Alcohol on Phase Diagram in Cyhalothrin Microemulsion[J]. Chinese Journal of Applied Chemistry, ;2006, 23(5): 503-507. shu

Effect of Alcohol on Phase Diagram in Cyhalothrin Microemulsion

1.
College of Chemistry and Materials Science of Shangdong Agricultural University, Taian 271018

Corresponding author: LU Fu-Sui,
Received Date: 8 July 2005
Available Online: 18 January 2006
Fund Project: 山东省自然科学基金资助项目(Y2003B01) (Y2003B01)

Microstructure of cyhalothrin microemulsion was studied by means of conductivity measurement.When the mass ratio of surfactant,cyhalothrin-cyclohxanone solution and alcohol was fixed,the microstructure changed from W/O structure through bicontinuous structure to O/W structure as the alcohol was ethanol,and the there was a liquid crystal region before bicontinuous structure as the alcohol was n-octanol.The pseudo ternary phase diagrams of cyhalothrin microemulsion were presented.The mechanism of cyhalothrin microemulsion formation was studied,with the particular emphasis on the effects of different alcohols and different alcohol-contents on cyhalothrin microemulsion.It has been found that with the increase of carbon atom number of the alcohol,the area of microemulsion region increased first and decreased afterwards;and the area of microemulsion region decreased first and increased afterwards with the increase of alcohol-content.
- cyhalothrin,
- microemulsion,
- phase diagram
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