Carbon dioxide-in-water microemulsions

被引：0

作者：

Lee Jr., C. Ted ^{[1
]}

Ryoo, Won ^{[1
]}

Smith Jr., P. Griffin ^{[1
]}

Arellano, Jose ^{[3
]}

Mitchell, Daniel R. ^{[2
]}

Lagow, Richard J. ^{[2
]}

Webber, Stephen E. ^{[2
]}

Johnston, Keith P. ^{[1
]}

机构：

[1] Department of Chemical Engineering, University of Texas, Austin, TX 78712, United States

[2] Department of Chemistry, University of Texas, Austin, TX 78712, United States

[3] Department of Chemistry, University of Wisconsin, Madison, WI, United States

来源：

| 1600年 / American Chemical Society卷 / 125期

关键词：

Carbon dioxide - Micelles - Potassium compounds - Solubility - Supercritical fluid extraction - Water;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Liquid and supercritical carbon dioxide swell potassium carboxylate perfluoropolyether (PFPE-K) cylindrical micelles in water to produce novel CO2-in-water (C/W) microemulsions. The swelling elongates the micelles significantly from 20 to 80 nm as the molar ratio of CO2 in the micelles to surfactant (RCO2) reaches approximately 8. As the micelles swell to form microemulsions, the solubility of pyrene increases by a factor of ca. 10. Fluorescence spectra suggest that pyrene resides primarily in the low-polarity micelle core rather than in the palisade region. The results illustrate the ability of C/W microemulsions to solubilize both lipophilic and fluorophilic substances simultaneously.

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