波谱学杂志 ›› 1992, Vol. 9 ›› Issue (2): 141-148.

• 研究论文 • 上一篇    下一篇

用NMR方法测定聚合物长侧基转动扩散系数

晏欣1, 许肖龙2, 王德华2, 钱保功2   

  1. 1. 海军工程学院, 武汉 430033;
    2. 中国科学院武汉物理研究所, 武汉 430071
  • 收稿日期:1991-05-18 修回日期:1991-08-13 出版日期:1992-06-05 发布日期:2018-01-20
  • 基金资助:
    国家自然科学基金资助项目

DETERMINATION OF THE ROTATIONAL DIFFUSION CONSTANTS OF THE SIDE-CHAINS IN POLYMERS BY NMR TECHNIQUE

Yan Xin1, Xu Xiaolong2, Wang Dehua2, Qian Baogong2   

  1. 1. Naval Academy of Engineering, Wuhan 430033, PRC;
    2. Wuhan Institute of Physics, The Chinese Academy of Sciences, Wuhan 430071
  • Received:1991-05-18 Revised:1991-08-13 Online:1992-06-05 Published:2018-01-20

摘要: 提出了一种测定聚合物溶液及有机固体中长侧基转动扩散系数的NMR方法,即先导出聚合物溶液和固体中长侧基运动的相关函数和谱密度函数,然后利用13C自旋弛豫数据求出扩散系数.同时还讨论了两个应用实例.

关键词: 转动扩散系数, 相关函数, 13C自旋弛豫, 长侧基, 聚合物

Abstract: An NMR method is presented for determining the rotational diffusion constants of the side-chains in polymer solutions and solids, that is, first, the correlation functions and spectral density functions of the rotation of the side-chains were derived, and then the rotational diffusion constants of these side-chains were determined with the aid of 13C spin relaxation data. Two applied examples are also discussed.

Key words: Rotational, Diffusion, Constant, Correlation function, 13C spin relaxation, Side-chain, Polymer