Gemini表面活性剂胶束化的热力学模型  

The Aggregation of Quaternary Ammonium Bromide Gemini Surfactants with Thermodynamic Model

作　　者：徐晓明[1] 林永生[1] 韩国彬[1] 吴金添[1] 

机构地区：[1]厦门大学化学系

出　　处：《厦门大学学报（自然科学版）》2003年第4期485-488,共4页Journal of Xiamen University：Natural Science

基　　金：国家自然科学基金(29973033)

摘　　要：用修正过的Camesano热力学模型计算联接基团为聚亚甲基链的季铵盐型Gemini表面活性剂的胶团化自由能,探讨联接基团长度、形成胶团的七项自由能因子和烃基链长度对胶团的大小、形状、cmc及胶团尺寸分布的影响。所计算的cmc,胶团的大小和形状等胶团性质均与实验数据较一致。The free energy of micellization of quaternary ammonium bromide gemini surfactants (referred to as m-s-m ,2Br- )was calculated on the basis of a modified Camesano s thermodynamic model. The modeling results show that the electrostatic free energy plays a key role in determining the equilibrium shapes of the aggregates, and an increase in spacer chain length prevents micelle from growing. The predicted cmc, size and shapes of aggregates generally agreed with the experimental data.

关 键 词：GEMINI表面活性剂 胶束化 热力学模型 分子结构 迁移自由能 界面自由能 

分 类 号：O647.2[理学—物理化学] O642.1[理学—化学]