Partition Equilibrium on the Interface Between a Charged Membrane and a Mixed Electrolyte Aqueous Solution

作     者：XU Tong wen YANG Wei hua 

作者机构：Department of ChemistryUniversity of Science and Technology of ChinaHefei 230026P.R.China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究(英文版))

年 卷 期：2003年第19卷第1期

页      面：63-69页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：Supported by the National Natural Science Foundation of China(No.2 0 10 6 0 15 and2 9976 0 4 0 ) Natural Science Foun-dation of Anhui Province(No.990 4 5 4 31) and Key Foundation of Educational Comm ittee of Anhui Province(No.2 0 0 0 jl2 5 5 zd) 

主　　题：Partition coefficient Donnan equilibrium Mixed electrolyte Charged membrane 

摘      要：Ionic partition equilibrium on a charged membrane immersed in a mixed electrolyte solution was systematically investigated and several models were established for the determination of partition coefficients. On the basis of theoretical models, the effects of the concentration ratio λ of the fixed group(charged density) to reference electrolyte, the concentration ratio η between the two electrolytes existing in the solution and the valence of the electrolyte ions on the partition equilibrium in a positively charged membrane were analyzed and simulated within the chosen parameters in detail. The obtainable results can also be applicable to a sytem of mixed electrolytes contacting with a negatively charged membrane. The theoretical calculations were confirmed with the experimental data of model mixed electrolytes, NaCl+HCl and CaCl 2+NaCl partitioned in the system of self made negatively charged membrane sulphonated poly(phenylene oxide)(SPPO) with different charge densities.