Synthesis and Performance Evaluation on Amphoteric Surfactant of Dodecyl/Tetradecyl Phosphobetain

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Abstract:

The phosphobetaine amphoteric surfactant of N, N-dimethyl-tridecane hydroxyethyl ammonium phosphate (PBET-13), was synthesized by using epichlorohydrin, NaH2PO4 and dodecyl/tetradecyl dimethyl amine and cetyl/octadecyl dimethyl ammonium as raw materials. The scale inhibition, interfacial tension and foaming performance of PBET-13 were studied. The results show that the surfactant has higher scale inhibition efficiency to CaSO4 than that of CaCO3. PBET-13 solution with the appropriate concentration of NaCl could reach to the ultra-low value of interfacial tension, and PBET-13 shows good foam performance.

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134-140

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March 2014

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