物理化学学报 >> 2002, Vol. 18 >> Issue (09): 830-834.doi: 10.3866/PKU.WHXB20020913

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规则溶液理论应用于bola/SDS混合体系的研究

阎云;韩峰;黄建滨;李子臣;马季铭   

  1. 北京大学化学与分子工程学院，北京　100871
  • 收稿日期:2002-01-25 修回日期:2002-03-13 发布日期:2002-09-15
  • 通讯作者: 黄建滨 E-mail:JBHuang@chem.pku.edu.cn

The Study of Bolaamphiphile/SDS Mixed Systems by Applying the Regular Solution Theory

Yan Yun;Han Feng;Huang Jian-Bin;Li Zi-Chen;Ma Ji-Ming   

  1. College of Chemistry and Molecular Engineering, Peking University，Beijing　100871
  • Received:2002-01-25 Revised:2002-03-13 Published:2002-09-15
  • Contact: Huang Jian-Bin E-mail:JBHuang@chem.pku.edu.cn

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摘要： 以规则溶液理论研究了bola型阳离子两亲分子与十二烷基硫酸钠（SDS）混合体系的表面和胶团相互作用.相互作用参数的数值表明, bola分子与SDS在胶团中和溶液表面都发生了强烈的相互作用,这种相互作用的强度与普通季铵盐/烷基硫酸钠混合体系相当.这说明bola分子与SDS混合体系中的协同作用主要是由亲水基之间的静电相互作用产生的, 而bola分子结构中疏水部分对相互作用没有显著影响.

关键词: 规则溶液理论, bola型表面活性剂, 相互作用, 胶团, 表面吸附层

Abstract: The interaction of molecules on the surface and in the micelle of the mixed system of cationic bolaamphiphile/sodium dodecyl sulfate(SDS) was studied by using regular solution theory. The interaction parameter indicates that strong interaction exists both in the surface adsorption layer and in the micelle. The strength of the interaction is similar to that of conventional alkyl quaternary ammonium salt/alkyl sodium sulfate mixed system. This means the synergism in the bolaamphiphile/SDS mixed system is mainly caused by the electrostatic interaction between the hydrophilic head group, but not apparently affected by the hydrophobic part of the bola molecules.

Key words: Regular solution theory, Bolaamphiphile, Interaction, Micelle, Surface adsorption layer