ICCAS OpenIR
Phase and self-assembly transition induced by glycerol-borax interaction in an aqueous surfactant two-phase system
Zhao, Ying2; Yan, Yun2; Jiang, Lingxiang2; Huang, Jianbin2; Hoffmann, Heinz1
2009
Source PublicationSOFT MATTER
ISSN1744-683X
Volume5Issue:21Pages:4250-4255
AbstractWe report that the phase and self-assembly transition in an aqueous surfactant two-phase (ASTP) system can be induced by a small amount of glycerol. The ASTP was formed from a cationic Gemini surfactant, C(12)C(6)C(12)(Et), and an anionic surfactant, sodium laureate (SL), in a borax solution. Upon addition of 0.3-2 vol% glycerol to the system, the ASTP system underwent a striking phase transition: three phases at 0.3-0.5% glycerol, a single birefringent phase at 0.7-1.2% glycerol, then again two phases, with the upper one like ice-cream. FF-TEM, CSLM and polarized microscopy revealed that the lamellae in the original upper phase were transformed into multilamellar vesicles. This phase and the microstructure transition were attributed to neutralization of sodium laureate to lauric acid by the formation of protons from the reaction of borax with glycerol. The variation of the charge density on the bilayer assemblies and the formation of LA were confirmed by fluorescence quenching and ATR-IR experiments. Our results demonstrate that a small amount of glycerol can be used to tailor the phases and microstructures in surfactant systems containing pH-sensitive components.
DOI10.1039/b911564a
Indexed BySCI
Language英语
WOS IDWOS:000270837900024
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66944
Collection中国科学院化学研究所
Corresponding AuthorYan, Yun
Affiliation1.Univ Bayreuth, BZKG, D-95448 Bayreuth, Germany
2.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Ying,Yan, Yun,Jiang, Lingxiang,et al. Phase and self-assembly transition induced by glycerol-borax interaction in an aqueous surfactant two-phase system[J]. SOFT MATTER,2009,5(21):4250-4255.
APA Zhao, Ying,Yan, Yun,Jiang, Lingxiang,Huang, Jianbin,&Hoffmann, Heinz.(2009).Phase and self-assembly transition induced by glycerol-borax interaction in an aqueous surfactant two-phase system.SOFT MATTER,5(21),4250-4255.
MLA Zhao, Ying,et al."Phase and self-assembly transition induced by glycerol-borax interaction in an aqueous surfactant two-phase system".SOFT MATTER 5.21(2009):4250-4255.
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