四川师范大学学报（自然科学版）2011，Vol.34Issue(5)：714-718,5.DOI:10.3969/j.issn.1001-8395.2011.05.024
双季铵盐表面活性剂的合成及表面活性研究
Studies on Synthesis and Surface Activity of Quaternary Ammonium Salt Gimini Surfactants
摘要
Abstract
The dimethylene-1,2-( bisquatemary ammonium bromine group connected) bis (carboxylic ester) (called B) and the dimethyl-ene-1,2-(bisquatemary ammonium bromine group connected) bis(carboxylic salt) (called C) are synthesized with fatty acid. The chemical structure of products are characterized by infrared spectroscopy. The surface activities of the products are measured and the B1 and B2 are synthesized respectively with lauric acid and myristic acid. The critical micelle concentrations( CMC) are respec-tively 1.4 × 10 -4 and 2.2 × 10 -4 mol/L, and surface tensions(γcmc ) are respectively 30.5 and 37.8 mN/m. The CMC of C1and C2 are respectively 7.8 × 10-5 and 3.0 × 10 -4 mol/L, while the γcmc are respectively 28.9 and 36.9 mN/m. The results show that then-CMC of the gemini surfactants B1 and B2 are 1/10 ~ 1/100 of their "monomer". Their surface tensions are 2 ~9 mN/m lowering than their " monomer". Their CMC of the gemini surfactants C1 and C2 are 1/60 ~ 1/230 of their " monomer" , but their surface tensions are similar to their corresponding "monomer".关键词
季铵盐/双子表面活性剂/脂肪酸/表面活性Key words
quaternary ammonium salt/ gimini surfactant/ fatty acid/ surface activity分类
数理科学引用本文复制引用
王碧..双季铵盐表面活性剂的合成及表面活性研究[J].四川师范大学学报（自然科学版）,2011,34(5):714-718,5.基金项目
四川省科技厅科技支撑项目基金(2010GZ0131)和四川省教育厅自然科学重点基金(09ZC055)资助项目 （2010GZ0131）
