多元表面活性剂复配的分子热力学模型研究  

Molecular thermodynamic model for compounding of multiple surfactants

作　　者：程锦 陈章洋 张峪铭 段奇 练成 刘洪来[1] CHENG Jin;CHEN Zhangyang;ZHANG Yuming;DUAN Qi;LIAN Cheng;LIU Honglai(School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学化学与分子工程学院,上海200237

出　　处：《化工学报》2020年第10期4590-4600,共11页CIESC Journal

基　　金：国家自然科学基金创新群体项目(51621002);国家自然科学基金项目(91834301,21808055);上海市青年科技英才扬帆计划(18YF1405400).

摘　　要：表面活性剂在实际工业生产中有着广泛应用,一般多为多种表面活性剂的复配体系,利用不同组分的特性,使得复配体系具有比单一表面活性剂更优越的性能,而多元表面活性剂复配机理仍不是很清楚。采用实验与理论模型相结合的方法,研究混合表面活性剂各组分间的协同效应。首先以Flory-Huggins理论为基础,推导了多元表面活性剂体系的分子热力学模型,通过二元系实验数据关联出两两相互作用参数,可对多元体系临界胶束浓度(cmc)与混合表面活性剂胶束相组成进行预测,三元表面活性剂复配体系模型计算结果与实验值吻合较好。Surfactants are widely used in the actual industrial production.Generally,it is a compound system of multiple surfactants to make use of the characteristics of different components,so that the compound system has better performance than a single surfactant.The compounding mechanism of multiple surfactants is still an interesting topic.In this paper,experimental and theoretical models are used to study the synergistic effect among the components of mixed surfactants.Firstly,based on Flory-Huggins theory,the molecular thermodynamic model of the multi-component surfactant system is derived.The interaction parameters of the two systems are correlated through the experimental data of the binary system.The critical micelle concentration(cmc)of the multi-component system and the phase composition of the mixed surfactant micelle can be predicted.The calculated results of the three-component surfactant system model are in good agreement with the experimental values.

关 键 词：表面活性剂 协同效应 分子热力学 临界胶束浓度 Flory-Huggins理论 相平衡 模型 

分 类 号：TQ013.1[化学工程]