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Soft aggregates formed by a nonionic phytosterol ethoxylate and beta-cyclodextrin in aqueous solution
Yue, X (Yue, Xiu); Chen, X (Chen, Xiao); Li, QT (Li, Qintang); Qian, ZH (Qian, Zhaohong)
2015
发表期刊COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN0927-7757
卷号482期号:10页码:79-86
摘要The self-assembling behavior of a nonionic phytosterol ethoxylate surfactant (BPS-30), mixed with beta-cyclodextrin (beta-CD) at a 1:1 molar ratio, has been investigated in aqueous solutions. The anisotropic and birefringent aggregates obtained with the mixtures present vesicle and lamellar morphologies, which are rarely found in other surfactant/beta-CD mixture systems. The observed aggregate morphologies are determined mainly by the surfactant concentrations as evidenced through observations using scanning or cryo-transmission electron microscopy. The vesicle aggregates appear in solutions of low BPS-30 concentrations (<12 wt%), while the lamellar structures are observed in solutions of high BPS-30 concentrations (>12 wt%). Additional aggregate structural details are explored through small-angle X-ray scattering measurements. Different with other surfactant/beta-CD mixture systems, beta-CD appears to function as a cosurfactant in this research, as shown by the H-1-H-1 NOESY nuclear magnetic resonance spectroscopy and the surface tension measurements. Control experiments with urea molecules were conducted to demonstrate that the main driving force of aggregation is a synergistic effect of the H-bonding and hydrophobic interactions. The obtained results on the nonionic mixture of biosurfactant/beta-CD in this paper further demonstrate the potential expanded applications of soft matter construction.
关键词Phytosterol Ethoxylate Surfactant Beta-cyclodextrin Self-assembling H-1-h-1 Noesy
DOI10.1016/j.colsurfa.2015.03.062
收录类别SCI
WOS记录号WOS:000360411300010
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/4330
专题环境科学与技术研究室
作者单位Shandong Univ, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Peoples R China; Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
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Yue, X ,Chen, X ,Li, QT ,et al. Soft aggregates formed by a nonionic phytosterol ethoxylate and beta-cyclodextrin in aqueous solution[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2015,482(10):79-86.
APA Yue, X ,Chen, X ,Li, QT ,&Qian, ZH .(2015).Soft aggregates formed by a nonionic phytosterol ethoxylate and beta-cyclodextrin in aqueous solution.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,482(10),79-86.
MLA Yue, X ,et al."Soft aggregates formed by a nonionic phytosterol ethoxylate and beta-cyclodextrin in aqueous solution".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 482.10(2015):79-86.
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