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.

引用

页码：860 / 865

页数：6

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