新型双联阳离子活性剂的合成与表征

Synthesis and Characterization of a Cationic Gemini Surfactant

以壬基酚和甲醛为原料缩合制备出二 ( 2 -羟基 -5 -壬基苯基 )甲烷 ,并与环氧氯丙烷和三甲胺反应 ,得到一种新型双亲油基 -双亲水基阳离子表面活性剂 (BS) ,通过元素分析、红外光谱和核磁共振氢谱证实了其结构 ,并测定了表面张力及临界胶束浓度 ,结果表明BS具有良好的表面活性。

A novel Gemini surfactant with two lipophilic groups and two hydrophilic groups was synthesized using trimethylamine,epichlorohydrin,and bis (2-hydroxy-5-nonyl phenyl) methane which was prepared from p -nonylphenol and formaldehyde.The structure of this Gemini surfactant was characterized by elemental analysis,IR and 1H NMR.The good surface activities of the surfactant was shown obviously by measurement of surface tension and critical micelle concentrations in aqueous solution.