NMR characterization of N-benzyl sulfonated derivatives of chitosan

被引：32
作者：
Crini, G
Torri, G
Guerrini, M
Morcellet, M
Weltrowski, M
Martel, B
机构：
[1] Ist Chim & Biochim G Ronzoni, I-20133 Milan, Italy
[2] Univ Sci & Tech Lille Flandres Artois, URA CNRS 351, Lab Chim Macromol, F-59655 Villeneuve Dascq, France
[3] Ctr Technol Text, St Hyacinthe, PQ J2S 1H9, Canada
来源：
CARBOHYDRATE POLYMERS | 1997年 / 33卷 / 2-3期
关键词：
D O I：
10.1016/S0144-8617(96)00174-9
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Chitosan was reacted with 2-formylbenzene sodium sulfonate and 4-formylbenzene sodium disulfonate in the presence of sodium cyanoborohydride to yield N-benzyl derivatives. One-dimensional and two-dimensional NMR spectroscopy were used for the characterization of both products. This study allowed us to assign all proton and carbon signals and confirmed the structure. H-1 NMR spectra showed that the parent polymer is 22% acetylated and that the overall degree of substitution is 83% and 47% for the monosulfonic and disulfonic derivatives, respectively. (C) 1997 Published by Elsevier Science Ltd.
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页码：145 / 151
页数：7
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