Analysis of solid wood surfaces by diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy
Analysis of solid wood surfaces by diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy
复制标题
通过漫反射红外傅立叶变换 (DRIFT) 光谱分析实木表面
DOI：
10.1080/02773819008050253
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发表时间：
1990
影响因子：
2
通讯作者：
L. G. Cool
中科院分区：
文献类型：
--
作者：
E. Zavarin;Stephen T. Jones;L. G. Cool
用几种方法对木材的红外光谱进行了比较，结果表明，以Kubelka-Munk单位表示的木粉KBr分散液的DRIFT谱与实木切片的透射FTIR谱最一致，其次是以Kubelka-Munk单位表示的实木DRIFT谱，而以吸光度单位表示的实木DRIFT谱差异最大。固体木材的DRIFT光谱在很小程度上取决于晶粒取向和选择晚与早木材。然而，光谱强烈依赖于表面粗糙度，粗糙的表面产生更多的透射光谱。在2242 cm-1处的穿透深度（置于木材切片下的聚丙烯腈CN峰强度损失90%）在37和138 μm之间变化，与木材密度呈反比线性关系。化学处理过的木材表面的DRIFT光谱分析表明，氯或二氧化氮处理后，羰基官能团增加。
Abstract Comparison of infrared spectra of wood taken by several methods indicated that the DRIFT spectrum of a dispersion of wood powder in KBr, expressed in Kubelka-Munk units, agreed best with the spectrum taken by transmission FTIR of solid wood sections; the DRIFT spectrum of solid wood, expressed in Kubelka-Munk units, was a close second, while the solid-wood DRIFT spectrum expressed in absorbance units differed most. The DRIFT spectrum of solid wood depended to a minor extent on the grain orientation and choice of late- vs early-wood. The spectrum depended strongly, however, on surface roughness with rougher surfaces producing more transmission-like spectra. Depth of penetration at 2242 cm-1 (90% loss in intensity of CN peak of polyacrylonitrile placed under wood sections) varied between 37 and 138 μm with an inverse linear relationship to wood density. DRIFT spectral analysis of chemically treated wood surfaces indicated an increase in carbonyl functional groups after chlorine or nitrogen dioxide ...