Synthesis and Physic-chemical Properties of an Zwitterionic Gemini Surfactant
作者单位：Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Shaanxi Key Laboratory of Physico-Inorganic Chemistry College of Chemistry & Material Science Northwest University
会议名称：《中国化学会第九届全国无机化学学术会议》
会议日期：2015年
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：the National Natural Science Foundation of China(No.21171139 21371143 and 21401149)for the financial support of this work
关 键 词：gemini surfactant zwitterionic surfactant synthesis interface tension
摘 要：Zwitterionic gemini surfactant with different hydrophobic tails(C-8, C-12 and CA-12) were synthesized by using ethylene glycol, phosohorus trichloride, oxygen, et al. as reactants. They were structurally characterized by IR,EA, 1H NMR, and 31 P NMR. Surface tension and oil/water interface tension were fully studied. The cmc of the synthesized surfactants evaluated by surface tension measurements ranges from 2.17×10-4 mol L-1 to 5.36×10-4 mol L-1 and the cmc surface tension values(γcmc) ranges from 26.49 m N m-1 to 29.06 m N m-1, which show excellent efficiency at reducing the water surface tension among the comparison surfactants. And on the other hand, all the surfactants can efficiently reduce the oil/water interface tension.