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Formation of water-in-CO2 microemulsions with non-fluorous surfactant Ls-54 and solubilization of biomacromolecules
Liu, JC; Han, BX; Zhang, HL; Li, GZ; Zhang, XG; Wang, J; Dong, BZ; Wang J(王俊); Dong BZ(董宝中)
2002
发表期刊CHEMISTRY-A EUROPEAN JOURNAL
卷号8期号:6页码:1356-1360
通讯作者Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China ; Shandong Univ, State Educ Minist, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要The solubility of Ls-54 surfactant in supercritical CO2 was determined. It was found that the surfactant was highly soluble in SC CO2 and the water-in-CO2 microemulsions could be formed, despite it being a non-fluorous and non-siloxane nonionic surfactant. The main reasons for the high solubility and formation of the microemulsions may be that the surfactant has four CO2-philic groups (propylene oxide) and five hydrophilic groups (ethylene oxide) and its molecular weight are relatively low. The results of this work provide useful information for designing CO-soluble non-fluorous and non-siloxane surfactants. The phase behavior of the CO2/Ls-54/H2O system, solvatochromic probe study, and the UV spectrum of lysozyme proved the existence of water domains in the SC CO2 microemulsions. The method of synchrotron radiation small-angle X-ray scattering was used to obtain the structural information on the Ls-54 based water-in-CO2 reverse micelles. By using the Guinier plot (In I(q) versus q(2)) on the data sets in a defined small q range (0.022-0.040 Angstrom(-1)), the radii of the reverse micelles were obtained at different pressures and molar ratio of water to surfactant. W-0, which were in the range of 20.4-25.2 Angstrom.
关键词carbon dioxide microemulsion supercritical fluids surfactants X-ray diffraction
学科领域Chemistry
研究领域[WOS]Chemistry ; Chemistry
DOI10.1002/1521-3765(20020315)8:6<1356::AID-CHEM1356>3.0.CO;2-N
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语种英语
研究领域[WOS]Chemistry ; Chemistry
WOS类目Chemistry, Multidisciplinary
WOS记录号WOS:000174555400010
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239313
专题多学科研究中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Liu, JC,Han, BX,Zhang, HL,et al. Formation of water-in-CO2 microemulsions with non-fluorous surfactant Ls-54 and solubilization of biomacromolecules[J]. CHEMISTRY-A EUROPEAN JOURNAL,2002,8(6):1356-1360.
APA Liu, JC.,Han, BX.,Zhang, HL.,Li, GZ.,Zhang, XG.,...&董宝中.(2002).Formation of water-in-CO2 microemulsions with non-fluorous surfactant Ls-54 and solubilization of biomacromolecules.CHEMISTRY-A EUROPEAN JOURNAL,8(6),1356-1360.
MLA Liu, JC,et al."Formation of water-in-CO2 microemulsions with non-fluorous surfactant Ls-54 and solubilization of biomacromolecules".CHEMISTRY-A EUROPEAN JOURNAL 8.6(2002):1356-1360.
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