The Effect of Adding Organic Solvents on the Phase Behavior in Water/Surfactant/scCO2 Microemulsion in Supercritical State

Abstract:

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Water/CO2 (W/C) microemulsion was formed by sodium salt of bis(2,2,3,3,4,4,5,5-octa fluoro-1-pentyl)-2-sulfosuccinate and the phase behavior of this emulsion was investigated in supercritical state. In addition, the change of the phase behavior of W/C microemulsion was observed when various organic solvents were added into this microemulsion. The added organic solvents are isopropanol, n-propanol, ethanol, methanol, pyridine, 2-methoxyethanol, tetrahydrofuran, acetonitrile, acetone, and 1,4-dioxane. According to the results, the phase behavior of W/C microemulsion depended on the temperature and pressure and the microemulsion was thermodynamically stable in the special range of pressure. In case of W/C microemulsion with organic solvents, the phase behavior of this system was affected by the solubility parameter of organic solvents.

Info:

Periodical:

Key Engineering Materials (Volumes 277-279)

Edited by:

Kwang Hwa Chung, Yong Hyeon Shin, Sue-Nie Park, Hyun Sook Cho, Soon-Ae Yoo, Byung Joo Min, Hyo-Suk Lim and Kyung Hwa Yoo

Pages:

886-892

DOI:

10.4028/www.scientific.net/KEM.277-279.886

Citation:

J. Y. Park et al., "The Effect of Adding Organic Solvents on the Phase Behavior in Water/Surfactant/scCO2 Microemulsion in Supercritical State ", Key Engineering Materials, Vols. 277-279, pp. 886-892, 2005

Online since:

January 2005

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Price:

$35.00

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