Chinese Journal of Applied Chemistry ›› 2021, Vol. 38 ›› Issue (2): 220-227.DOI: 10.19894/j.issn.1000-0518.200241

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Synthesis and Properties of Oleamide Quaternary Ammonium Gemini Surfactant

YANG Wei-Guang, CAO Yu-Peng, JU Hong-Bin, WANG Ya-Kui, GENG Tao, JIANG Ya-Jie*   

  1. China Research Institute of Daily Chemical Industry Co., Ltd, Taiyuan 030001, China
  • Received:2020-08-12 Accepted:2020-10-15 Published:2021-02-01 Online:2021-04-10
  • Supported by:
    National Key Research and Development Project of China (No.2017YFB0308900) and the Project of JALA Research Funds (No.JALA 2018)

Abstract: Oleamide quaternary ammonium Gemini surfactants GS-1, GS-2, GS-3 were synthesized by the reaction of Oleamide propyl dimethylamine and 1,3-dichloro-2-propanol, 1,4-dibromo-2-butene and 1,4-dibromo-butane, respectively. The structures of GS-1, GS-2, and GS-3 were characterized by Fourier-transform infrared (FT-IR) spectrometry and proton nuclear magnetic resonance (1H NMR), and their Krafft temperature, surface activity, emulsification performance, foam performance, and wettability were measured. The results show that three kinds of Gemini surfactants GS-1, GS-2, GS-3 are successfully prepared, and their Krafft temperatures are all less than 0 ℃, which provides a theoretical possibility for their use in low temperature environments with maintained high surface activity. Then, the critical micelle concentration (CMC) values of GS-1, GS-2, GS-3 are 7.7×10-5, 7.08×10-5, and 2.63×10-6 mol/L, respectively, which are consistent with the expected results. The CMC value of the Gemini surfactant is 1~2 orders of magnitude lower than that of the conventional surfactant single alkyl chain. In addition, the synthesized surfactants all show good surface a ctivity, emulsifying properties, and the ability to stabilize foam.

Key words: Gemini surfactant, Eco-friendly substances, Surface activity

CLC Number: