波谱学杂志 ›› 1997, Vol. 14 ›› Issue (2): 121-126.

• 研究论文 • 上一篇    下一篇

硫酸交联壳聚糖湿膜的13C CP MAS NMR研究

韩秀文1, 江涛1, 江成璋1, 杨苹1, 陆世维1, 杨年华2, 裘鉴卿2   

  1. 1. 中国科学院大连化学物理研究所, 大连 116023;
    2. 中国科学院武汉物理与数学研究所, 武汉 430071
  • 收稿日期:1996-10-15 修回日期:1996-11-21 出版日期:1997-04-05 发布日期:2018-01-22

13C CP MAS NMR STUDIES OF THE SWOLLEN SULFATE CHITOSAN MEMBRANE

Han Xiuwen1, Jiang Tao1, Jiang Chengzhang1, Yang Ping1, Lu Shiwei1, Yang Nianhua2, Qiu Jingqing2   

  1. 1. Dalian Institute of Chemical Physics, The Chinese Academy of Science, Dalian, 116023;
    2. Wuhan Institute of Physics and Mathematics, The Chinese Academy of Science, Wuhan 430071
  • Received:1996-10-15 Revised:1996-11-21 Online:1997-04-05 Published:2018-01-22

摘要: 首次采用13C CP MAS NMR技术对接近膜分离状态时的湿膜进行研究.结果表明:温膜的分子构象和分子运动能较全面地反映出膜的分离特性,弱的交联以及过快或过慢的分子运动均不利于膜的分离.

关键词: 13C CP MAS NMR, 壳聚糖膜, 分子构象, 分子运动

Abstract: In this paper, several swollen sulfate chitosan membranes were investigate by 13C CP MAS NMR method for the first time. The results indicate that the molecular conformation and motion of the swollen membrane can quite comprehensively reflect the permeation selectivity. From 13C CP MAS NMR spectra of the membrane with different degrees of swelling, the crosslinking strength was observed. The membrane with weak crosslinking has the poor separation ability. From T1 values of the swollen membrane, it has found that the too fast or slow molecular motion isn't favrable to the permeation selectivity, and there is an appropriate motion rate at which the best permeation selectivity can be approached.

Key words: 13C CP MAS NMR, Chitosan membrane, Molecular conformation, Molecular motion