新型烷基苯磺酸盐Gemini表面活性剂的合成与性质

新型烷基苯磺酸盐Gemini表面活性剂的合成与性质 Synthesis and Properties of a New Alkylbenzenesulfonate Gemini Surfactant 邰书信 TAI Shuxin1 1 first-author 高志农 GAO Zhinong1 1 2 葛玉舒 GE Yushu1 1 黄荔 HUANG Li1 1 唐小燕 TANG Xiaoyan1 1 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 中国地质大学构造与油气资源教育部重点实验室 中国地质大学构造与油气资源教育部重点实验室 Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education,China University of Geosciences Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education,China University of Geosciences 以长链烷基羧酸、苯胺和1,6-己二异氰酸酯为原料合成了一类新型烷基苯磺酸盐Gemini表面活性剂,并用红外﹑核磁和质谱进行了结构表征.用表面张力法和稳态荧光法对所合成的疏水链碳原子数分别为8,10,12的烷基苯磺酸盐GeminiⅠ,Ⅱ,Ⅲ的有关性能进行了测定.结果显示,25℃时用表面张力法测得GeminiⅠ,Ⅱ,Ⅲ的临界胶束浓度（cmc）分别为1.2,0.19,0.006mmol.L-1,即随疏水链长度的增加而降低,较传统的单链烷基苯磺酸盐表面活性剂低1～3个数量级,显示出很好的胶束形成能力.用稳态荧光法也得到了类似结果.与类似结构的苯磺酸盐型Gemini表面活性剂相比,该类型Gemini表面活性剂在气/液界面排列的分子面积更大. A new alkylbenzenesulfonate Gemini surfactant was synthesized based on long chain alkyl carboxylic acid,aniline and 1,6-hexamethylene diisocyanate.The structure and purities of the product were confirmed by FT-IR,1H NMR and ESI-MS.The properties of Gemini synthesised（abbreviated as GeminiⅠ,GeminiⅡ and Gemini Ⅲ when their hydrophobic chain numbers were 8,10,12） were studied by steady-state fluorescence probe and surface tension method.At 25 ℃,the critical micelle concentrations（cmc’s） were obtained as 1.2,0.19 and 0.006 mmol·L-1 for GeminiⅠ,GeminiⅡ and Gemini Ⅲ respectively,using the surface tension method.The cmc’s of title compounds decreased when the hydrophobic chain increased,and were 1-3 times lower than the corresponding monomeric surfactants,showing excellent micelle-forming property.Similar results were conducted from the steady-state fluorescence probe method.The surface area of the product at the air/water interface was larger than that of Geminis with similar structure reported. Gemini表面活性剂 合成 临界胶束浓度 稳态荧光法 Gemini surfactants synthesis critical micelle concentration fluorescence probe 10.14188/j.1671-8836.2011.01.007 TQ423 构造与油气资源教育部重点实验室开放研究基金（TPR-2009-05）;湖北省自然科学基金（2000J023）资助项目 2011-01-01 2021-04-01 1 57