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日用化学工业（中英文）

日用化学工业 ›› 2016, Vol. 46 ›› Issue (2): 80-83.doi: 10.13218/j.cnki.csdc.2016.02.004

• 开发与应用 • 上一篇    下一篇

非对称阳离子双子表面活性剂的合成和性能研究

刘凡,许虎君   

  1. 江南大学 化工与材料工程学院,江苏 无锡 214122
  • 出版日期:2016-02-22 发布日期:2016-02-22
  • 通讯作者: 许虎君,副教授,博士,电话:13338103707,E-mail:xu6209@163.com。
  • 作者简介:刘 凡(1990-),男,硕士研究生,电话:18912485780,E-mail:vanliu23@163.com。

Synthesis and performance of an asymmetric cationic Gemini surfactant

LIU Fan,XU Hu-jun   

  1. School of Chemical & Material Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China
  • Online:2016-02-22 Published:2016-02-22

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摘要： 采用十六烷基二甲基叔胺和十八烷基二甲基叔胺分别与盐酸、环氧氯丙烷反应,制备得中间产物N-(3-氯-2-羟基)丙基-N,N-二甲基十六烷基氯化铵和N-(3-氯-2-羟基)丙基-N,N-二甲基十八烷基氯化铵。2种中间产物在碳酸钠催化下先后与乙二胺反应生成一种含长亲水链非对称阳离子双子表面活性剂(16-X-18)。采用IR和1H NMR对中间体和产物进行表征,采用电导率法研究了所制备的表面活性剂的表面活性。结果表明,所制备的非对称阳离子双子表面活性剂的Krafft点低于0 ℃,cmc在25 ℃时为2.935×10-5 mol/L,反离子结合度随温度的上升而降低。

关键词: 双子表面活性剂, 非对称, 双季铵盐, 表面活性

Abstract: Hexadecyl dimethyl tertiary amine and octadecyl dimethyl tertiary amine were separately used as starting material and to be reacted successively with hydrochloric acid and epichlorohydrin to prepare two intermediates,N-(3-chloro-2-hydroxy)propyl-N,N-dimethyl hexadecyl ammonium chloride and N-(3-chloro-2-hydroxy)propyl-N,N-dimethyl octadecyl ammonium chloride.Then ethylene di-amine reacted with the two intermediates successively in presence of sodium carbonate to obtain the product asymmetric Gemini surfactant (symbolized as 16-X-18).The intermediates and the product were characterized by IR and 1H NMR as well as the surface activities of 16-X-18 were measured by conductivity method.Results showed that Krafft point of the product is below 0 ℃,and its cmc at 25 ℃ is 2.935×10-5 mol/L.The degree of combination with the counter-ion decreases as the temperature rises.

Key words: Gemini surfactant, asymmetry, bis-quaternary ammonium salt, surface activity

中图分类号: 

  • TQ423