高等学校化学学报Issue(10)：2009-2015,7.DOI:10.7503/cjcu20150207
四硅氧烷 Gemini 咪唑表面活性剂的合成及表面性能
Synthesis and Surface Properties of Siloxane Gemini Imidazolium Surfactant†
摘要
Abstract
A new siloxane gemini imidazolium surfactant 3,3'-di[γ-tri(trimethylsiloxy)silyl]propylchloride-1, 1'-( 1, 4-butanediyl )-bisimidazole ([ Si4-4-Si4 im ] Cl2 ) was synthesized with chlorotrimethylsilane,γ-chloropropyltrichlorosilane, 1,4-dichlorobutane and imidazole. The structure of the surfactant was characte-rized by MS and 1 H NMR spectra, and the results proved that it was consistent with the target structure. The surface tension of the surfactant was measured by Wilhelmy measuring plate method at 25 ℃. It indicates that the γcmc of the surfactant in aqueous solution can be reduced to 18. 6 mN/ m and the value of cmc is 0. 54 mmol/ L. The thermodynamic parameters of micellization( △G 0—m , △H 0—m , △S 0—m ) of the surfactant were researched by determination of the electrical conductivity in different concentrations. The results suggest that the process of micellization is spontaneous and micellization of [ Si4-4-Si4 im ] Cl2 is entropydriven at 15—35 ℃.关键词
四硅氧烷 Gemini 咪唑表面活性剂/临界胶束浓度/电导率/表面张力/热力学参数Key words
Siloxane Gemini imidazolium surfactant/Critical micelle concentration/Electrical conductivity/Surface tension/Thermodynamic parameter分类
化学化工引用本文复制引用
梁维平,赵晓辉,安东,徐乾,叶志文..四硅氧烷 Gemini 咪唑表面活性剂的合成及表面性能[J].高等学校化学学报,2015,(10):2009-2015,7.基金项目
江苏省“六大人才高峰”项目(批准号：JNHB-001)资助.? Supported by the “Six Talented Peaks” Program of Jiangsu Province, China(No. JNHB-001) （批准号：JNHB-001）
