含酯基联接基的双子表面活性剂的合成及性能  

Synthesis and properties of Gemini surfactants with ester group in the spacer

作　　者：马小单[1,2] 李华静[1,2] 李远刚[1,2] 周安宁[1,2] 

机构地区：[1]广州蓝月亮实业有限公司开发部,广东广州510760 [2]西安科技大学化学与化工学院,陕西西安710054

出　　处：《西安科技大学学报》2012年第5期627-631,共5页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金项目(20943001);陕西省科学技术研究发展计划项目(2011K08-21)

摘　　要：合成了2种含酯基的双子季铵盐型表面活性剂N,N'—双十二烷基—N,N,N',N'—四甲基—1,6己二酸—二乙醇胺酯—二溴化铵(DTAD)和N,N'—双十二烷基—N,N,N',N'—四甲基—对苯二甲酸—二乙醇胺酯—二溴化铵(DTTD)。通过HNMR和元素分析表征了其结构和组成。测定了这2种表面活性剂的临界胶束浓度(cmc)、胶束解离度(α)、起泡性和稳泡性。实验结果表明:DTAD的cmcα大于DTTD,但起泡性和稳泡性较DTTD稍差。对比联接基的结构进行了初步探讨,发现联接基结构和长度对表面活性剂表面活性具有明显影响。Two quaternary ammonium type Gemini surfactants with ester group in the spacer, N, N′- didodecyl-N, N, N′, N′-teramethyl-di-（2-aminoethanol）-adipate-dibromide ammonium （DTAD） and N, N′-didodecyl-N, N, N′, N′-teramethyl-di- （ 2-aminoethanol ） terephthalate-dibromide ammonium （DrI＇FD） were synthesized. The molecular structures were characterized by NMR and element analysis. The critical micelle concentration （ cmc ） , ionization degree of micelle （α） , foaming ability and foam stability were measured. The results show that DTAD has higher cmc, a than DTFD. But its foaming ability and foam stability is lower than that of DTFD. These results imply that the structure of the spacer has an important influence on the properties of Gemini surfactants.

关 键 词：双子表面活性剂 酯基联接基 表面活性 

分 类 号：O69[理学—化学]