Acta Phys. -Chim. Sin. ›› 2013, Vol. 29 ›› Issue (09): 2013-2018.doi: 10.3866/PKU.WHXB201306283

• SOFT MATTER • Previous Articles     Next Articles

Impact of the Addition of Gum Arabic on the Interface Dilational Properties of Gemini Surfactants

XIONG Ke-Jie, SHU Zhan-Xia, NIE Hai-Yu, DU Feng-Pei   

  1. Department of Applied Chemistry, College of Science, China Agriculture University, Beijing 100193, P. R. China
  • Received:2013-05-03 Revised:2013-06-26 Published:2013-08-28
  • Contact: DU Feng-Pei E-mail:dufp@cau.edu.cn
  • Supported by:

    The project was supported by the Chinese Universities Scientific Fund (15053134).

Abstract:

We studied the impact of the addition of Gum Arabic on the dilational properties of Gemini surfactants. The investigation found that the addition of 1% (w) Gum Arabic in the Gemini surfactants solutions caused a decrease in the interfacial tension, but the addition of 1% (w) Gum Arabic resulted in the dilational modulus increasing significantly. The explanation to this observation is that the electrostatic interaction of the Gum Arabic/surfactant complex increased and the dilational modulus increased. A possible schematic diagrams of the adsorbed Gemini molecules with Gum Arabic at the decane/water interface is proposed.

Key words: Gemini surfactant, Molecular structure, Gum Arabic, Interface, Dilational property

MSC2000: 

  • O647