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

Chinese Journal of Magnetic Resonance ›› 1997, Vol. 14 ›› Issue (2): 115-119.

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

Jiang Tao¹, Han Xiuwen¹, Yang Ping¹, Jiang ChengZhang¹, Lu Shiwei¹, Yang Nianhua², Qiu Jianqing²

1. Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian, 116023;
2. Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071

Received:1996-10-03 Revised:1996-11-07 Published:1997-04-05 Online:2018-01-22

Abstract

Abstract: The structure of the dry chitosan membranes crosslinked by sulfuric acid at different concentrations was investigated by ¹³C CP MAS NMR method. The results show that the crosslinking situation of the membrane can be reflected directly by the molecular conformation of the sulfate chitosan, and has a close relationship with the permeation selectivity of the membrane. We have also found that, for some types of membranes, it is not sufficient to study the membrane only in dry state.

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

Jiang Tao, Han Xiuwen, Yang Ping, Jiang ChengZhang, Lu Shiwei, Yang Nianhua, Qiu Jianqing. ¹³C CP MAS NMR STUDIES OF THE DRY SULFATE CHITOSAN MEMBRANE[J]. Chinese Journal of Magnetic Resonance, 1997, 14(2): 115-119.

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

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