高等学校化学学报

高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (2): 314.

• 研究论文 • 上一篇    下一篇

十二烷基混合糖苷与其它表面活性剂二元体系表面吸附和胶束形成的顺序研究

王仲妮1,2, 李干佐1, 张高勇1,3, 刘峰1, 牟建海1, 王正武1   

  1. 1. 山东大学胶体与界面化学教育部重点实验室, 济南 250100;
    2. 山东师范大学化学系, 济南 250014; 3. 中国日用化学研究院, 太原 030001
  • 出版日期:2006-02-10 发布日期:2006-02-10
  • 通讯作者: 李干佐(1938年出生), 男, 教授, 博士生导师, 从事胶体与界面化学研究. E-mail: coliw@sdu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 30370945)、 国家“九七三”计划子课题基金(批准号： 2003CCA02900)和贵州省省长重点科研项目基金(批准号: 20016)资助.

The Order of Surface Adsorption and Micella Formation of Binary Surfactant Systems Containing Dodecyl Polyglycoside

WANG Zhong-Ni 1,2, LI Gan-Zuo1, ZHANG Gao-Yong1 ,3,
LIU Feng1, MU Jian-Hai 1, WANG Zheng-Wu1   

  1. 1. Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University， Jinan 250100, China;
    2. Department of Chemistry, Shandong Normal University, Jinan 250014, China;
    3. China Research Institute of Daily Chemical Industry, Taiyuan 030001, China
  • Online:2006-02-10 Published:2006-02-10
  • Contact: LI Gan-Zuo,E-mail: coliw@sdu.edu.cn

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被引次数

14

摘要：

摘要绿色表面活性剂烷基糖苷C12G 1.46具有混合糖苷组成, 将其分别与十二烷基三氧乙烯磺酸钠C12E3S、 十二烷基三甲基氯化铵C12TAC、  三硅氧烷非离子表面活性剂BE-6、 聚醚类表面活性剂 TMN-6复配, 在25 ℃下测定它们在0.1 mol/L NaCl溶液中的表面活性, 通过其混合表面层和混合胶束的分子交换能(ε, εm)的计算得出如下结论: (1) C12G1.46的活性高于C12G1和C12G2, 即烷基混合糖苷的活性高于相同烷基的纯糖苷的结论得到了进一步证实. 利用MM2分子力场计算的能量数据可合理地解释这种混合产品活性提高的原因. (2) 在该烷基混合糖苷的二元体系溶液中, 对其表面吸附和胶束化两个过程的顺序问题进行探讨, 一种情况是先建立表面吸附, 再形成胶束(C12G1.46/BE-6 和 C12G1.46/TMN-6 体系); 另一种情况是表面吸附和胶束化同时进行(C12G1.46/C12TAC和C12G1.46/C12E3S体系).

关键词: 烷基混合糖苷; 分子交换能; 二元表面活性剂体系;  表面吸附;  胶束形成

Abstract:

Abstract Surface tension, dynamic surface tension and molecule exchange energy in mixed monolayer formation(ε) and mixed micellization(εm) were determined, for binary mixtures of a multidegree polymerized dodecyl polyglycoside C12G1.46 with C12E3S(trioxyethylenated dodecyl sulfonate), C12TAC(dodecyl trimethylammonium chloride), BE-6(hexa-oxyethylenated trisilaxane surfactant), and TMN-6(hexa-oxyethylenated-2,6,8-trimethyl-nonanol), respectively, in 0.1 mol/L NaCl solution at 25 ℃. From the results obtained two conclusions are drawn: (1) C12G1.46 is more surface-active than pure C12G1 and C12G2, which is interpreted by the energy results calculated by using MM2 force field method; (2) for C12G1.46/BE-6 and C12G1.46/TMN-6 systems, the mixed monolayer formation is prior to the mixed micelle formation, in which ε-εm<0 and the dynamic surface tensions reach the meso-equilibrium with 15 s; while for C12G1.46/C12E3S and C12G1.46/C12TAC systems, surface adsorption and micellization processes occurred at the same time, in which ε-εm≥0 and the meso-equilibrium are reached within about 50 s.

Key words: Alkylpolyglycoside; Molecule exchange energy; Binary surfactant system; Surface adsorption; Micellization

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