探测膜/溶液体系内部信息的介电谱方法——以模型和解析为中心  

Dielectric spectroscopy method for detecting the information on inner the membrane/solution system——with the emphasis on models and analysis of dielectric spectra

作　　者：赵孔双[1] 李玉红[2] 

机构地区：[1]北京师范大学化学学院,北京100875 [2]常熟理工学院化学与材料工程系江苏省新型功能材料重点实验室,常熟215500

出　　处：《膜科学与技术》2007年第2期1-6,共6页Membrane Science and Technology

基　　金：国家自然科学基金(20673014);江苏省新型功能材料重点实验室开放基金(kf200625)

摘　　要：就“介电谱方法研究膜体系的有效性”这一问题进行了展开性的阐述:扼要地介绍了以等效回路为基础的膜-液体系基本介电模型和包含电性质分布区域的多层膜介电模型,并以纳滤膜体系为例简要论证了以该模型和介电理论为基础的介电谱解析方法对原位获取内部信息的有效性.最后,对介电谱解析方法在膜领域的研究前景作了展望性的评述.The validity for investigating membrane - solution systems by using dielectric spectroscopy was logically demonstrated. The development of dielectric models based on the essential equivalent circuit was simply presented, and the description was focused on the model including locally varying conductivity and dielectric constant. The analysis method of dielectric spectra to obtain the information on the inner structure of composite membrane, such as multiplayer configuration and circumstances of ion permeation in membrane, was recommended by illustrating the example of nanofiltration membrane. As the main line of this paper, an emphasis was laid on the foundation of dielectric model and analysis method according to the model. Finally, a concluding remark about the signification of dielectric spectroscopy method to membrane system and the potential applications to extensive field related with membrane was made.

关 键 词：介电谱 介电模型 浓差极化 复合膜结构 

分 类 号：TQ028.8[化学工程]