NMR study of a novel chitosan-based hydrogel

被引：51

作者：

Capitani, D

De Angelis, AA

Crescenzi, V

Masci, G

Segre, AL

机构：

[1] Inst Nucl Chem, I-00016 Monterotondo, Italy

[2] CNR, NMR Serv, Res Area Rome, I-00016 Monterotondo, Italy

[3] Univ La Sapienza, Dept Chem, I-00185 Rome, Italy

来源：

CARBOHYDRATE POLYMERS | 2001年 / 45卷 / 03期

关键词：

NMR; chitosan; cross-linking degree;

D O I：

10.1016/S0144-8617(00)00255-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Chemical gels are obtained by reacting chitosan with 1,1,3,3-tetramethoxypropane (TMP, a "masked" dialdehyde) and then reducing the polymeric Schiff-base networks with an excess of cyanoborohydride (NaBH3CN). The gels have been characterized by means of three different C-13 magic angle spinning NMR techniques: cross-polarization, cross-polarization with a simultaneous phase inversion and single pulse excitation. In this way we obtained spectra containing sufficiently resolved information for structural analysis. A quantitative evaluation of the cross-linking degree of chitosan-TMP networks is thus attainable. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：245 / 252

页数：8

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