二酸化炭素水中のマイクロエムルション
C Ted Lee1, Won Ryoo, P Griffin Smith
1Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, USA.
Journal of the American Chemical Society
|March 6, 2003
まとめ
二酸化炭素は,水中のPFPE-Kミセルを膨らませ,新しいCO ((2)-in-waterマイクロエムルションを形成します. これらのマイクロエムルションはピレン溶解性を高め,脂性物質とフッ素性物質の両方を溶解させることができます.
科学分野:
- コロイドと表面科学 コロイドと表面科学
- 材料化学 材料化学について
- 物理化学 物理化学
背景:
- perfluoropolyether carboxylates (PFPE-K) は,水溶液で円筒状のミセルを形成する.
- 二酸化炭素 (CO2) は,ミセラ構造と相互作用し,それを変化させることができます.
研究 の 目的:
- PFPE-Kミセルに対する液体および超臨界CO2の影響を調査する.
- 製造されたCO2・イン・ウォーター (C/W) マイクロエムルションの特徴を説明するために.
- これらの新しいマイクロエムルションの溶解能力を評価する.
主な方法:
- 水中のPFPE-Kミセルの形成.
- 液体および超臨界COを使用したミセルの腫れ (((2).
- 光スペクトロスコピーによるミセルの寸法分析.
- ピレンの溶解性の決定.
- マイクロエムルション内のピレンの局所化の調査.
主要な成果:
- CO(2) はPFPE-Kミセルを20nmから80nmに膨らませ,CO(2):表面活性物質比 (R(CO2) が約8.8で,PFPE-Kミセルを大幅に膨らませる.
- ピレン溶解性は,腫れたミセル (C/Wマイクロエムルション) で約10倍増加する.
- 光データによると,ピレンは主にミセルの核へのパーティションを示しています.
結論:
- 新型CO(2) -in-water (C/W) マイクロエムルションは,PFPE-KミセルをCO(2) で膨らませることで形成されます.
- これらのC/Wマイクロエムルションは,ピレンなどのリポフィル物質の溶解能力が向上しています.
- この研究は,C/Wマイクロエムルションが,脂性およびフッ素性化合物の同時に溶解する可能性を実証しています.
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