Measuring compression wood severity in spruce
Measuring compression wood severity in spruce
复制标题
测量云杉的压缩木材强度
DOI：
10.1007/s00226-008-0226-1
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发表时间：
2008
影响因子：
3.4
通讯作者：
Altaner C
中科院分区：
文献类型：
--
作者：
Altaner C
由于压缩木材的严重程度影响木材的机械和化学性能，因此希望能够测量压缩木材的严重程度。然而，到目前为止，文献中还没有令人满意的方法。在这里，我们描述了扫描FTIR显微光谱学如何被用来实现挪威云杉（Picea abies(L.)）增量岩心的连续波严重性测量。)和锡特卡云杉（Picea sitchensis(Bong.)）卡里埃)。放射状木条通过保持其空间方向的过程转化为锯末。用ftir显微镜在反射模式下对制备的样品进行扫描，并从得到的光谱中计算出代表芳香和羧基信号的cw指示剂。该FTIR CW指标与其他CW鉴定技术（即微纤维角、透射光和β - 1-4半乳聚糖的免疫标记）具有良好的相关性，这些技术已用于验证该方法。测量结果重复性好，云杉种间无系统差异。测量的可实现分辨率为亚毫米级。描述的连续变形指标提供了将连续变形严重程度与云杉木材机械性能相关联的机会。
As the severity of compression wood influences the mechanical and chemical properties of wood it is desirable to be able to measure compression wood severity. However, so far no satisfactory method has been reported in the literature. Here we describe how scanning FTIR micro-spectroscopy can be employed to achieve CW severity measurements on increment cores of Norway spruce (Picea abies(L. Karst.) and Sitka spruce (Picea sitchensis(Bong.) Carrière). Radial wood strips were converted into sawdust by a process that maintained their spatial orientation. Samples prepared in this way were scanned with an FTIR-microscope in reflective mode and from the spectra obtained a CW-indicator was calculated representing aromatic and carboxyl signals. This FTIR CW-indicator correlated well with alternative CW identification techniques (namely microfibril angle, transmitted light and immunolabelling of beta 1–4 galactan), which have been used to validate the method. Repeatability of the measurements was good and no systematic difference between spruce species was found. The achievable resolution of the measurements was of sub-mm order. The CW indicator described offers the opportunity to correlate CW severity with mechanical wood properties in spruce.
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