双季铵盐-硫酸酯盐两性Gemini表面活性剂的合成及其表面活性

双季铵盐-硫酸酯盐两性Gemini表面活性剂的合成及其表面活性 Synthesis and Surface-Active Property of Bis-Quaternary Ammonium Salt-Sulfate Zwitterionic Gemini Surfactant 赵秋伶 ZHAO Qiu-ling 1 2 first-author 高志农 GAO Zhi-nong 1 2 武汉大学化学与分子科学学院 武汉大学化学与分子科学学院 College of Chemistry and Molecular Sciences,Wuhan University College of Chemistry and Molecular Sciences,Wuhan University 武汉大学化学与分子科学学院,湖北,武汉,430072 武汉大学化学与分子科学学院,湖北,武汉,430072 用N,N-二甲基十二胺、环氧氯丙烷、盐酸（摩尔比为2∶1∶1）一锅煮的方法得到连接基上带有羟基的双季铵盐Gemini表面活性剂,然后与氯磺酸反应将其羟基硫酸化,再用NaOH中和制得白色粉末状的三头基双季铵盐-硫酸酯钠盐两性Gemini表面活性剂.后两步反应产物的总产率为78%,最终产物的熔点为231 2 33℃.合成产物的结构用元素分析、红外光谱、质谱和核磁共振等手段进行鉴定.经测定,在15℃时该两性Gemini表面活性剂的表面张力为34.5 mN/m,临界胶团浓度为7.2×10-5mol/L. N,N-dimethyldodecylamine,hydrochloride and epichlohydrin（mole rate is 2∶1∶1） were used to synthesize bis-quaternary ammonium salt Gemini surfactant with a hydroxyl in its space group by a one-pot method.The hydroxyl was sulfonated by chlorosulfonic acid and then neutralized to afford bis-quaternary ammonium salt-sodium sulfate zwitterionic Gemini surfactant with three-head groups.The yield of the last two-step product is 78%,and the melting point of final product is 231 233℃. Its structure was characterized by IR（infrared spectrum）, 1 H NMR（ 1 H nuclear magnetic resonance）,MS（mass spectrum）,and EA（elmements analysis）.Surface-active property was investigated.Critical micelle concentration and surface tension of the novel zwitterionic Gemini surfactant in aqueous solution at（15℃） are 7.2×10 -5 mol/L,34.5 mN/m respectively. 双季铵盐-硫酸酯钠盐两性Gemini表面活性剂 合成 表面活性 临界胶团浓度 表面张力 bis-quaternary ammonium salt-sulfate zwitterionic Gemini surfactant synthesis surface-active property critical micelle concentration surface tension TQ423 湖北省自然科学基金资助项目（2000J023） 2005-06-01 2021-04-01 6