Environmental stimuli induced phase transition in the aqueous mixture solution of Gemini surfactants and sodium deoxycholate

被引:19
|
作者
Li, Qintang [1 ]
Yue, Xiu [2 ]
Shang, Pengming [1 ]
Quan, Yaru [1 ]
Ren, Mingxing [1 ]
Ma, Yinge [1 ]
Chen, Xiao [1 ]
机构
[1] Shandong Univ, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Peoples R China
[2] Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
基金
中国国家自然科学基金;
关键词
Gemini surfactants; Wormlike micelles; Lamellar aggregates; Temperature responsive; pH responsive; SMALL-ANGLE SCATTERING; ALKANEDIYL-ALPHA; OMEGA-BIS(DIMETHYLALKYLAMMONIUM BROMIDE) SURFACTANTS; INDIRECT FOURIER TRANSFORMATION; WORMLIKE MICELLES; BILE-SALT; DODECYLTRIMETHYLAMMONIUM BROMIDE; INTERACTING PARTICLES; RHEOLOGICAL BEHAVIOR; DIMERIC SURFACTANTS; LIVING POLYMERS;
D O I
10.1016/j.colsurfa.2015.10.030
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The phase behavior in a mixture of a cationic Gemini surfactant (12-2-12) and an anionic sodium deoxycholate (SDC) in the aqueous solution was reported here. The microstructures of formed aggregates have been investigated by rheology, small angle X-ray scattering and transmission electron microscopy. Mediated by the hydrophobic and electrostatic interactions of 12-2-12 and SDC, the wormlike micelles and lamellar aggregates were formed successively with increasing the SDC concentration. Due to the presence of hydroxyl and carboxylate groups on SDC, these aggregates were temperature and pH responsive. At low SDC concentrations, the wormlike micelles could be transformed into lamellar aggregates at lower pH. While at high SDC concentrations, the lamellar aggregates would be transformed into wormlike micelles at elevated temperatures. The Gemini surfactant structure also played an important role here on such environment-responsive phase transitions. The obtained results suggest the possibility to form smart aggregates by utilizing simple molecules with certain functional groups. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:67 / 74
页数:8
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