Acta Phys. -Chim. Sin. ›› 1997, Vol. 13 ›› Issue (09): 773-779.doi: 10.3866/PKU.WHXB19970902

• ARTICLE • Previous Articles     Next Articles

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


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