Continuum contraction of tension wood fiber induced by repetitive hygrothermal treatment
Continuum contraction of tension wood fiber induced by repetitive hygrothermal treatment
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DOI：
10.1007/s00226-015-0762-4
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发表时间：
2015-09
影响因子：
3.4
通讯作者：
K. Sujan;Hiroyuki Yamamoto;M. Matsuo;Masato Yoshida;Kazuhiro Naito;Tatsuya Shirai
中科院分区：
文献类型：
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作者：
K. Sujan;Hiroyuki Yamamoto;M. Matsuo;Masato Yoshida;Kazuhiro Naito;Tatsuya Shirai
张力木，在窑干时，很可能发生巨大的变形，这可能是由胶状纤维的胶状层引起的。为了阐明在窑干过程中张力木材变形的机制，在类似于窑干早期阶段的湿热处理过程中张力木材所经历的应变进行了研究。正常木材在第一次处理后沿纵轴拉长，并在重复处理后趋于平稳。在第一次处理过程中，受拉木材沿纵向轴向明显收缩，随后在后续处理过程中出现较小的收缩。张力木材的这种特征湿热行为与胶状层的面积比有关。胶层的特殊行为被认为是张力木材表现不同的可能原因之一。这一发现将有助于通过澄清胶状层变形背后的机制开发适当的调味方法。
Tension wood, when kiln-dried, is likely to deform hugely, which is probably caused by a gelatinous layer of the gelatinous fiber. To elucidate the mechanism behind the deformation of tension wood during kiln-drying, the strains experienced by tension wood during a hygrothermal treatment that is akin to an early stage of kiln-drying were investigated. Normal wood elongated along the longitudinal axis after the first treatment and leveled off with repetitive treatments. During the first treatment, tension wood contracted significantly along the longitudinal axis, followed by small subsequent contractions, which occurred during successive treatments. This characteristic hygrothermal behavior of tension wood correlated with the areal ratio of the gelatinous layer. One of the possible reasons why tension wood behaves differently was thought to be particular behavior of gelatinous layer. This finding will contribute to the development of appropriate seasoning method for tension wood by clarifying the mechanism behind the deformation of the gelatinous layer.