Near-infrared spectroscopic monitoring of the water adsorption/desorption process in modern and archaeological wood

被引：55
|
作者：
Inagaki, Tetsuya [1 ]
Yonenobu, Hitoshi [2 ]
Tsuchikawa, Satoru [1 ]
机构：
[1] Nagoya Univ, Grad Sch Bioagr Sci, Nagoya, Aichi 4648601, Japan
[2] Naruto Univ Educ, Naruto 7728502, Japan
来源：
APPLIED SPECTROSCOPY | 2008年 / 62卷 / 08期
基金：
日本学术振兴会;
关键词：
near-infrared spectroscopy; NIR spectroscopy; wood; water; adsorption/desorption; spectral decomposition;
D O I：
10.1366/000370208785284312
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We investigated the adsorption/desorption mechanism of water and the variation of water adsorption for modern and archaeological wood using near-infrared spectroscopy. A mixture model of water was used to decompose the near-infrared difference spectra into three components (free water molecules (S-0), those with one OH group engaged in hydrogen bonding (S-1), and those with two OH groups engaged in hydrogen bonding (S-2)) based on a principal component analysis. The variations of each water component with relative humidity could be explained by proposing a model that describes water absorption in three stages. It was concluded that the aging phenomenon in wood is due to the decrease of adsorption sites on hemicellulose and amorphous cellulose.
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页码：860 / 865
页数：6
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