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Gemini表面活性剂胶束化的热力学模型
引用本文:徐晓明,林永生,韩国彬,吴金添.Gemini表面活性剂胶束化的热力学模型[J].厦门大学学报(自然科学版),2003,42(4):485-488.
作者姓名:徐晓明  林永生  韩国彬  吴金添
作者单位:厦门大学化学系,物理化学研究所,固体表面物理化学国家重点实验室,福建,厦门,361005
基金项目: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.

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
文章编号:0438-0479(2003)04-0485-04
修稿时间:2002年12月30

The Aggregation of Quaternary Ammonium Bromide Gemini Surfactants with Thermodynamic Model
XU Xiao-ming,LIN Yong-sheng,HAN Guo-bin,WU Jin-tian.The Aggregation of Quaternary Ammonium Bromide Gemini Surfactants with Thermodynamic Model[J].Journal of Xiamen University(Natural Science),2003,42(4):485-488.
Authors:XU Xiao-ming  LIN Yong-sheng  HAN Guo-bin  WU Jin-tian
Abstract: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.
Keywords:gemini surfactants  thermodynamic model  micellization
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