FTIR and WAXS analysis of periodate oxycellulose: Evidence for a cluster mechanism of oxidation

被引：95

作者：

Calvini, P

Gorassini, A

Luciano, G

Franceschi, E

机构：

[1] SBAP, Minist Beni Culturali, I-16126 Genoa, Italy

[2] Univ Udine, Dipartimento Storia & Tutela Beni Culturali, I-33100 Udine, Italy

[3] Univ Genoa, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy

来源：

VIBRATIONAL SPECTROSCOPY | 2006年 / 40卷 / 02期

关键词：

beta-alkoxy elimination; FTIR crystallinity index; oxycellulose; X-ray analysis;

D O I：

10.1016/j.vibspec.2005.08.004

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Cellulose paper (Whatman no. 1, chromatographic grade) was oxidised with 0. 1 M sodium metaperiodate at different oxidation levels (0- 11 days at room temperature), and analysed with FTIR before and after chemical treatments (reduction, further oxidation, alkaline hydrolysis). The deconvolution of infrared data allowed us to verify that periodate oxidises cellulose in isolated domains, leading to the decrease of crystallinity, in agreement with the results of wide angle X-ray scattering (WAXS). In particular, the alkaline hydrolysis (beta-alkoxy fragmentation) followed by mild acid treatment removed the oxidised groups and recovered most of the crystallinity of cellulose, as determined by the FTIR crystallinity index. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：177 / 183

页数：7

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