Chinese Journal of Applied Chemistry

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Synthesis and Surface Activity of N-(2-Hydroxylpropyl) Perfluorooctane Amide Foaming Agent

CHENG Qi1, LIU Xinmei1*, DAI Caili2   

  1. (1.College of Chemical Engineering; 2.College of Petroleum Engineering,
    China University of Petroleum(East),Qingdao 266580,China)
  • Received:2013-01-09 Revised:2013-02-14 Published:2013-11-10 Online:2013-11-10
  • Contact: Liu

Abstract: Non-ionic fluorocarbon surfactant N-(2-hydroxypropyl) perfluorooctane amide was synthesized via the fattyacid method using perfluorooctanoic acid and isopropyl amine as precursors. The structures of products were characterized by infrared adsorption spectra(IR) and nuclear magnetic resonance spectroscopy(NMR). The bubbling potential, foam stability, salt resistance and surface tension of the samples were evaluated and compared with sodium dodecylsulfate(SDS). The results show that foam comprehensive exponent of the product is 1.6 times that of SDS. The foaminess is not obviously influenced by the concentration of inorganic ions. The surface tensions of the samples can be increased up to 9.275 mN/m. At lower concentration, the capability of reducing surface tension is better than that of SDS. The property of the products is strongly influenced by the type and quantity of hydrogen bonds, and the content of amides in the chain of the products.

Key words: the amide fluorocarbon foaming agent, foaming property, Surface tension

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