Acta Chim. Sinica ›› 2018, Vol. 76 ›› Issue (8): 605-616.DOI: 10.6023/A18040132 Previous Articles     Next Articles

Review

介电松弛谱法用于高分子链动力学行为的研究

雷冬, 陆丹   

  1. 吉林大学化学学院 超分子结构与材料国家重点实验室 长春 130012
  • 收稿日期:2018-04-06 出版日期:2018-08-15 发布日期:2018-05-28
  • 通讯作者: 陆丹 E-mail:lud@jlu.edu.cn
  • 作者简介:雷冬,吉林大学化学学院在读硕士研究生.2017年毕业于东北石油大学化学化工学院并获得工学学士学位.同年9月进入吉林大学化学学院攻读硕士研究生,师从陆丹教授.主要应用宽频介电松弛谱仪,静/动联用光散射技术,从事共轭高分子的松弛与转变,以及溶液动力学的研究;陆丹,理学博士,教授,博士生导师.1993年考入中国科学院长春应用化学研究所,高分子化学与物理国家重点实验室攻读硕士学位后直博.研究兴趣主要包括:共轭高分子链构象变化对载流子迁移特性影响的研究;外电场对共轭高分子有序结构的调控及载流子迁移特性的影响;共轭高分子PFO链构象及其凝聚态结构的标度律研究
  • 基金资助:

    项目受国家自然科学基金(Nos.21574053,91333103)资助.

Dielectric Spectroscopy for the Study of the Dynamic Behavior of Polymer Chains

Lei Dong, Lu Dan   

  1. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012
  • Received:2018-04-06 Online:2018-08-15 Published:2018-05-28
  • Contact: 10.6023/A18040132 E-mail:lud@jlu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 21574053, 91333103).

Dielectric spectroscopy is a great useful method in investigating polymeric chains dynamic. It can reflect the characteristic structural information of molecules and is of great significance for revealing the nature and laws of the dynamic behavior of polymer chains as well as regulating their condensed structure. In this paper, based on the theory of dielectric spectroscopy, we conclude some kinds of common dielectric parameters and mathematic functions which is used to analyse the dielectric parameters. Therefore, the dielectric parameters of the polymeric chains, such as the dielectric constant, the dielectric relaxation strength, and the characteristic relaxation time of polymeric chains, can be obtained by analysing the relaxation process of the polymeric chains to estimate the scale of relaxation process, the relaxation groups and the cooperation process of side chains. Of course, it is very useful to connect the dielectric parameters with the Arrenius function, the Vogel-Tammann-Fulcher (VFT) and the statistics model to obtain the interface construction, the molecular internal composition, the dynamic behaviors of polymeric chain, and the dependence on environment etc., in order to establish a polymer physics theoretical foundation for the further macromolecule design, development and application for polymer materials.

Key words: dielectric spectroscopy, polymer, dynamic, feature parameters, relaxation