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本文引用的文献

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Surfactant-mixing effects on the interfacial tension and the microemulsion formation in water/supercritical CO2 system.表面活性剂混合对水/超临界二氧化碳体系中界面张力和微乳液形成的影响。
Langmuir. 2007 Feb 27;23(5):2369-75. doi: 10.1021/la062789i.
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Designed CO2-philes stabilize water-in-carbon dioxide microemulsions.
Angew Chem Int Ed Engl. 2006 May 26;45(22):3675-7. doi: 10.1002/anie.200600397.
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Interfacial properties of branch-tailed fluorinated surfactants yielding a water/supercritical CO2 microemulsion.生成水/超临界二氧化碳微乳液的支链尾端氟化表面活性剂的界面性质。
Langmuir. 2004 Mar 30;20(7):2560-6. doi: 10.1021/la036074g.
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Self-assembly of phosphate fluorosurfactants in carbon dioxide.磷酸盐氟表面活性剂在二氧化碳中的自组装。
Langmuir. 2004 Feb 17;20(4):1065-72. doi: 10.1021/la034742s.
5
Hybrid fluorocarbon-hydrocarbon CO2-philic surfactants. 2. formation and properties of water-in-CO2 microemulsions.氟碳-碳氢混合亲二氧化碳表面活性剂。2. 二氧化碳包水微乳液的形成与性质
Langmuir. 2004 Nov 9;20(23):9960-7. doi: 10.1021/la0483820.
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Micellization of economically viable surfactants in CO(2).
J Colloid Interface Sci. 2003 Feb 15;258(2):367-73. doi: 10.1016/s0021-9797(02)00104-2.
7
Formation of water-in-CO(2) microemulsions with non-fluorous surfactant Ls-54 and solubilization of biomacromolecules.使用非氟表面活性剂Ls-54形成二氧化碳包水微乳液及生物大分子的增溶作用
Chemistry. 2002 Mar 15;8(6):1356-60. doi: 10.1002/1521-3765(20020315)8:6<1356::aid-chem1356>3.0.co;2-n.
8
Water: From Clusters to the Bulk.水：从团簇到本体。
Angew Chem Int Ed Engl. 2001 May 18;40(10):1808-1827.

表面活性剂Ls - 54在液态二氧化碳与水体系中的相平衡以及使用彭 - 罗宾逊状态方程进行溶解度估算

Phase equilibrium for surfactant Ls-54 in liquid CO(2) with water and solubility estimation using the Peng-Robinson equation of state.

作者信息

Tarafa Pedro J, Matthews Michael A

机构信息

Department of Engineering Sciences and Materials, University of Puerto Rico, Mayagüez PR 00681 USA.

出版信息

Fluid Phase Equilib. 2010 Nov 25;298(2):212-218. doi: 10.1016/j.fluid.2010.07.020.

DOI:10.1016/j.fluid.2010.07.020
PMID:21037962
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2963999/
Abstract

It is known that the commercial surfactant Dehypon® Ls-54 is soluble in supercritical CO(2) and that it enables formation of water-in-CO(2) microemulsions. In this work we observed phase equilibrium for the Ls-54/CO(2) and Ls-54/water/CO(2) systems in the liquid CO(2) region, from 278.15 - 298.15 K. In addition, the Peng-Robinson equation of state (PREOS) was used to model the phase behavior of Ls-54/CO(2) binary system as well as to estimate water solubilities in CO(2). Ls-54 in CO(2) can have solubilities as high as 0.086 M at 278.15 K and 15.2 MPa. The stability of the microemulsion decreases with increasing concentration of water, and lower temperatures favor increased solubility of water into the one-phase microemulsion. The PREOS model showed satisfactory agreement with the experimental data for both Ls-54/CO(2) and water/CO(2) systems.

摘要

已知商业表面活性剂Dehypon® Ls - 54可溶于超临界CO₂，并且它能够形成CO₂包水微乳液。在本研究中，我们观察了278.15 - 298.15 K的液态CO₂区域内Ls - 54/CO₂和Ls - 54/水/CO₂体系的相平衡。此外，采用彭 - 罗宾逊状态方程（PREOS）对Ls - 54/CO₂二元体系的相行为进行建模，并估算CO₂中的水溶解度。在278.15 K和15.2 MPa条件下，CO₂中Ls - 54的溶解度高达0.086 M。微乳液的稳定性随水浓度的增加而降低，较低的温度有利于水在单相微乳液中溶解度的增加。PREOS模型与Ls - 54/CO₂和水/CO₂体系的实验数据显示出令人满意的一致性。