Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (03): 335-342. Previous Articles     Next Articles

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  1. (北京航空航天大学材料科学与工程学院空天材料与服役教育部重点实验室 北京 100191)
  • 收稿日期:2010-09-22 修回日期:2010-10-05 出版日期:2011-02-14 发布日期:2010-10-19
  • 通讯作者: 杨继萍

Lytropic Liquid Crystalline Structures of a Sulfonic Acid-Containing Gemini Surfactant

XU Ling-Yan, YANG Ji-Ping   

  1. (Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191)
  • Received:2010-09-22 Revised:2010-10-05 Online:2011-02-14 Published:2010-10-19

The lytropic liquid crystalline structures of a novel sulfonic Gemini surfactant 6,6 -(butane-1,4-diylbis(oxy))bis(3-nonylbenzenesulfonic acid)(9BA-4-9BA) were investigated using polarizing microscope and X-ray diffraction device. It was found that 9BA-4-9BA presented special lytropic liquid crystal patterns in different solvents, and the phase behaviors were closely related to the concentration and types of used solvents. With the increase of surfactant 9BA-4-9BA concentration in solvent, the phase patterns of 9BA-4-9BA in water transformed from cubic liquid crystal via cubic lamellar phase to lamellar liquid crystal phase, while 9BA-4-9BA in ethyl acetate mainly presented lamellar liquid crystal patterns.

Key words: sulfonic Gemini surfactant, lytropic liquid crystal, polarized texture, XRD