Assignment of non-crystalline forms in cellulose I by CP/MAS 13C NMR spectroscopy

被引：379

作者：

Wickholm, K ^{[1
]}

Larsson, PT ^{[1
]}

Iversen, T ^{[1
]}

机构：

[1] Swedish Pulp & Paper Res Inst, STFI, SE-11486 Stockholm, Sweden

来源：

CARBOHYDRATE RESEARCH | 1998年 / 312卷 / 03期

关键词：

cellulose; NMR; hydrolysis; chemometrics; fibril surfaces; C-13 T-1-relaxation time;

D O I：

10.1016/S0008-6215(98)00236-5

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Non-crystalline forms of cellulose in birch pulp, cotton linters and Cladophora sp were studied by CP/MAS C-13 NMR spectroscopy. New assignments were made for the NMR-signals in the lower shift part of the C-4 region (80-86 ppm). These signals were assigned to cellulose at accessible fibril surfaces, cellulose at inaccessible fibril surfaces and hemicellulose. Also, further evidence was found for para-crystalline cellulose as an "in-fibril" form, inaccessible to the surrounding solvent. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：123 / 129

页数：7

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