物理化学学报 >> 1997, Vol. 13 >> Issue (09): 773-779.doi: 10.3866/PKU.WHXB19970902

研究论文 上一篇    下一篇

10-十一烯酸衍生物混合体系的表面化学

赵国玺,阳振乐,朱王步瑶   

  1. 北京大学物理化学研究所，北京 100871
  • 收稿日期:1996-11-26 修回日期:1997-01-23 发布日期:1997-09-15
  • 通讯作者: 赵国玺

Study on Surface Chemical Properties of Mixed Systems of Derivatives of 10-undecenoic Acid

Zhao Guo-Xi,Yang Zhen-Le,Zhu Bu-Yao   

  1. Institute of Physical Chemistry,Peking University,Beijing 100871
  • Received:1996-11-26 Revised:1997-01-23 Published:1997-09-15
  • Contact: Zhao Guo-Xi

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摘要：

自表面张力测定对10-十一烯酸胆碱衍生物（三甲基-[2-（10-十一烯酰氧乙基）]碘化铵）与10-十一烯酸钠混合体系的表面吸附和胶团形成作了研究；对该体系中的囊泡形成进行了电镜观察. 结果表明，疏水链端基为不饱和烯基的正、负离子表面活性剂混合体系和有饱和疏水链的混合体系一样，也有很高的表面活性，易于表面吸附和形成胶团，并且容易在水及乙醇-水溶液中形成相当稳定的囊泡．这些结果的原因可归之于正、负表面活性离子之间的强烈静电相互作用．

关键词: 10-十一烯酸衍生物, 正、负离子表面活性剂, 表面吸附, 胶团, 囊泡

Abstract:

The surface adsorption and micelle formation of the mi xed systems of trimethyl[2-(10-undecenoyloxyl ethyl)]ammonium iodide and sodium 10-undecenoate have been investigated by tensiometry; The vesicle formation has been also demonstrated by TEM. It has shown that the mixed cationic-anionic surfactants containing the double bond in the end of hydrocarbon chains, as well as those containing saturated hydrocarbon chains, have a high surface activity and a high tendency to adsorb at the air/water surface and to form micelles in the solution; Moreover, quite stable vesicles from these systems can be also formed in the aqueous solution and ethanol/water solution. All of these may be attributed to the strongly electrostatic interaction between the cationic and anionic surfactants.

Key words: 10-undecenoic acid derivatives, Cationic-anionic surfactants, Surface adsorption, Micelle, Vesicle