【摘要】 针对表面活性剂临界胶团浓度和胶团聚集数的预测问题,从热力学角度出发,考虑了尾基转换自由能、尾基变形自由能、胶团中心 水界面自由能和头基空间相互作用的影响,建立了单一非离子型表面活性剂自组装模型.利用该模型可直接预测非离子型表面活性剂自组装的临界胶团浓度、胶团聚集数和胶团尺寸分布,与文献数据进行了比较,二者吻合较好.更多还原

【Abstract】 It is more important to predict the critical micelle concentration(CMC)and aggregate number and to determine the properties of surfactant solution.In this article,a model for selfassembly of a nonionic surfactant is established based on thermodynamic principles,which involves free energy change resulted from the tailsolvent interactions,micellesolvent interface interactions,and headhead interactions.In comparison with the references data,it is indicated that the CMC, the aggregate number,and the size distribution of micelles can be estimated well by the model.更多还原