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| n recent years, the research on reversed micelles in the continuous supercritical CO2 phase has attracted much attention due to the characteristic that reversed micelles in the supercritical CO2 can solubilize many polar and high molecular weight or hydrophilic molecules, such as amino acids, proteins and many polymers. Unfortunately, many surfactants used in the reversed micelles were fluorinated surfactants and silicanes, which have potential toxicity and cost high. Otherwise only few references about reversed micelles with hydrocarbon surfactants, which can get rid of the shortcomings, have been reported. So the formation of W/C microemulsions with hydrocarbon surfactants is of significant industrial interest.
In this work, cloud points of the hydrocarbon surfactants, A(EO)9(PO)2 and A(EO)9(PO)3, were measured in a high-pressure Variable-Volume optical cell. Experiments were operated at the concentration range 0.54-1.5 wt%, and at the temperature range 35-55 ℃. Cloud points pressu |
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| Keywords: cloud point, supercritical CO2, A(EO)9(PO)2 , A(EO)9(PO)3 |
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