New method for determining the degree of cellulose I crystallinity by means of FT Raman spectroscopy

被引：160

作者：

Schenzel, K

Fischer, S

Brendler, E

机构：

[1] Univ Halle Wittenberg, Dept Agr, D-06108 Halle An Der Saale, Germany

[2] Fraunhofer Inst Appl Polymer Res IAP, D-14476 Golm, Germany

[3] Tech Univ Freiburg, Inst Analyt Chem, D-09596 Freiburg, Germany

来源：

CELLULOSE | 2005年 / 12卷 / 03期

关键词：

cellulose I; crystallinity; FT Raman spectroscopy;

D O I：

10.1007/s10570-004-3885-6

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

A Raman crystallinity index - Xc(Raman) - characterizing the degree of crystallinity of partially crystalline cellulose I samples was created, utilizing the crystallinity dependence of CH2 bending modes. For calibration, physical mixtures containing different mass fractions of crystalline cellulose I and its amorphous form were prepared. Crystallinities from 0 to 60% were generated. Relative intensity ratios of the Raman lines I-1481 (cm-1) and I-1462 (cm-1) characterizing crystalline and amorphous parts of cellulose I correlated linearly with the mass fraction of crystalline cellulose I of the mixtures. Xc(Raman) values of microcrystalline celluloses of different origins and varying degree of crystallinity correlated reasonably with results obtained from NMR spectroscopy (Xc(NMR) values).

引用

页码：223 / 231

页数：9

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