化工进展 ›› 2017, Vol. 36 ›› Issue (08): 3047-3052.DOI: 10.16085/j.issn.1000-6613.2017-0075

• 精细化工 • 上一篇    下一篇

衣康酸双酯磺酸钠型双子表面活性剂的合成与性能

李盼, 徐红, 解鸿宇, 张欢欢, 杜蕾, 许军   

  1. 青岛科技大学化工学院, 山东 青岛 266042
  • 收稿日期:2017-01-13 修回日期:2017-01-23 出版日期:2017-08-05 发布日期:2017-08-05
  • 通讯作者: 许军,副教授,
  • 作者简介:李盼(1990-),女,硕士研究生。E-mail:1612043335@qq.com。
  • 基金资助:
    山东省自然科学基金项目(ZR2011BM006)。

Synthesis and properties of itaconic acid diester disulfonate Gemini surfactant

LI Pan, XU Hong, XIE Hongyu, ZHANG Huanhuan, DU Lei, XU Jun   

  1. Chemical Engineering College, Qingdao University of Science & Technology, Qingdao 266042, Shandong, China
  • Received:2017-01-13 Revised:2017-01-23 Online:2017-08-05 Published:2017-08-05

摘要: 采用衣康酸酐、月桂醇、1,4-丁二醇、亚硫酸氢钠为主要原料,依次经单酯化、磺化、双酯化反应,合成了一种新颖的双子表面活性剂——1,4-丁二醇双衣康酸月桂醇双酯磺酸钠(Gemini-12),并通过正交试验对双酯化合成条件进行了优化。较佳工艺条件如下:双酯化反应温度150℃,反应时间6.0h,衣康酸单月桂醇酯磺酸钠与1,4-丁二醇的摩尔比为2.30:1.00,催化剂用量为物料总量的1.0%(质量分数)。通过FTIR和1H NMR对中间产物和Gemini-12的结构进行了确认,并对终产物的物化性能进行了初步表征,测得其临界胶束浓度(CMC)为1.38×10-3mol/L,表面张力γCMC为28.60mN/m,效率因子pC20为3.14,表面活性剂的效能CMC/C20为1.91,表面过剩量ΓCMC为1.15mmol/m2,极限分子面积ACMC为1.44×10-3nm2/mol,标准胶束自由能△GmicΘ为-9.018 kJ/mol,标准吸附自由能△GadsΘ为-31.22 kJ/mol。随NaCl浓度的增加,Gemini-12的CMC值不断降低。

关键词: 衣康酸酐, 月桂醇, 磺化, 酯化, 表面活性剂, 合成

Abstract: A new type of Gemini surfactant(Gemini-12)was synthesized with cheap materials such as itaconic anhydride(IAn),lauryl alcohol,1,4-butanediol and sodium bisulfite by the monoesterification,sulfonation and diesterification reaction processes. The optimal reaction conditions of the diesterification obtained via orthogonal experiments were:ratio of sodium lauryl sulfoitaconic monoester to 1,4-butanediol=2.30:1.00,and 1.0% p-methyl benzenesulfonic acid at 150℃ for 6.0h. The structures of intermediate products and Gemini-12 were confirmed by FTIR and 1H NMR. Finally,the primary physico-chemical properties of Gemini-12 were characterized. The critical micelle concentration(CMC)was 1.38×10-3mol/L,and the surface tension at CMC was 28.60mN/m;the efficient factor pC20 was 3.14;CMC/C20 was 1.91;the saturation adsorption ΓCMC was 1.15mmol/m2;the area per molecule at interface was 1.44×10-3nm2/mole;the standard free energy of micellization was -9.018kJ/mol and the standard free energy of adsorption was -31.22kJ/mol. The CMC of Gemini-12 decreased with the increase of the concentration of NaCl solution.

Key words: itaconic anhydride, lauryl alcohol, sulfonation, esterification, surfactants, synthesis

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