高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (11): 2056.

• 论文 • 上一篇    下一篇

含对苯氧基联接链的羧酸盐Gemini表面活性剂合成及胶团化特性

杜恣毅, 游毅, 姜蓉, 黄维, 郑欧, 黄长沧, 赵剑曦   

  1. 福州大学化学系, 福州 350002
  • 收稿日期:2002-11-28 出版日期:2003-11-24 发布日期:2003-11-24
  • 通讯作者: 赵剑曦(1953年出生),男,博士,教授,从事胶体与界面科学研究.E-mail:jxzhao.colloid@fzu.edu.cn E-mail:jxzhao.colloid@fzu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20173010);福建省自然科学基金(批准号:E0110012);福建省教育厅项目(批准号:JB02065);福州大学校科技发展基金[批准号:XKJ(YM)-0103]资助

Synthesis of Sodium Carboxylate Gemini Surfactants Containing a p-Phendioxy Spacer and Their Micellization in Aqueous Solution

DU Zi-Yi, YOU Yi, JIANG Rong, HUANG Wei, ZHENG Ou, HUANG Chang-Cang, ZHAO Jian-Xi   

  1. Department of Chemistry, Fuzhou University, Fuzhou 350002, China
  • Received:2002-11-28 Online:2003-11-24 Published:2003-11-24

摘要: 合成了含对苯氧基联接链的羧酸盐Gemini表面活性剂,研究了其胶团化特性.结果表明,该羧酸盐Gemini表面活性剂具有很低的cmc值,给出了cmc-T(温度)以及lncmc-(m+1)(烷烃链长)的回归方程.计算了胶团化的热力学函数变化,证实胶团化过程来自熵驱动,并表现出焓/熵补偿现象,在所考察的系列中,以(m+1)=11的胶团最为稳定.

关键词: 羧酸盐Gemini表面活性剂, 对苯氧基联接链, 合成, 胶团化

Abstract: The sodium carboxylate Gemini surfactants containing a p-phendioxy spacer, Cm+1-Ph-Cm+1(2cbx)·2Na(cbx means carboxylate, m+1=9,11,13), were synthesized and their micellization in aqueous solution was studied by using conductivity measurements.The critical micelle concentration (cmc) of Cm+1-Ph-Cm+1(2cbx)·2Na was found to be considerably low in aqueous solution.The regression equations of cmc-Twas shown as cmc=8.57×10-4T2-0.499T+78.2 (m+1=9), cmc=2.86×10-5T2-0.0146T+2.90(m+1=11) and cmc=1.43×10-5T2-0.00730T+1.28(m+1=13), respectively.The variation of lncmc with (m+1) for all three surfactants obeyed an unified regression equation as lncmc=0.0323(m+1)2-1.00(m+1)+7.16. The thermodynamic functions calculated indicate that the micellization is an entropy-driven process and has a character of enthalpy-entropy compensation.In all the systems examined the micelle formed by (m+1)=11 is the most stable.

Key words: Sodium carboxylate Gemini surfactant, p-Phendioxy spacer, Synthesis, Micellization

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