Imaging Science and Photochemistry ›› 2016, Vol. 34 ›› Issue (4): 364-370.DOI: 10.7517/j.issn.1674-0475.2016.04.364

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The Effect of an Amide Group on the Surface Properties and Aggregation Behavior of the Gemini Cationic Surfactants

WU Yao1, HAO Chunling2, ZHAO Sui3, LONG Panfeng4, JIANG Xiaoming1   

  1. 1. Department of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, P.R.China;
    2. College of Agriculture, Guizhou University, Guiyang 550025, Guizhou, P.R.China;
    3. Technical Institute of Physics and Chemisry, Chinese Academy of Sciences, Beijing 100190, P.R.China;
    4. School of Chemical and Biological Science, Guizhou Normal College, Guiyang 550018, Guizhou, P.R.China
  • Received:2016-03-18 Revised:2016-05-04 Online:2016-07-15 Published:2016-07-15

Abstract:

Amide groups are usually introduced in the molecular structures of surfactants to improve their biodegradability. In this paper, the Gemini cationic surfactants with/without amide were synthesized and their properties were measured. The effect of the amide group on the surface properties and aggregation behavior of the Gemini cationic surfactants was investigated. When amide groups are introduced in the molecules of the Gemini cationic surfactants, the values of cmc, Гmax and the micelle microviscosity increase and Nagg value decreases. It is concluded that hydrogen bonding between amide bonds contributes to the adsorption process of the surfactants at the surface of the solution.

Key words: Gemini surfactant, surface property, aggregation, amide group, fluorescence