The microtensile properties of mechanically isolated compression wood (CW) and opposite wood (OW) tracheids of Chinese fir (Cunninghamia lanceolata) were investigated and discussed with respect to their structure. Major differences in the tensile modulus and ultimate tensile stress were found between CW and OW fibers. Compared to OW, CW showed a larger cellulose microfibril angle, less cellulose content and probably more pits, resulting in lower tensile properties. These findings contribute to a further understanding of the structural–mechanical relationships of Chinese fir wood at the cell and cell wall level, and provide a scientific basis for better utilization of plantation softwood.

中文翻译：

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杉木人工林压缩木材和相反木材的木材结构和微拉伸性能的比较研究

对杉木（Cunninghamia lanceolata）的机械分离压缩木材（CW）和对生木材（OW）管胞的微拉伸性能进行了研究，并就其结构进行了讨论。CW和OW纤维之间的拉伸模量和极限拉伸应力存在较大差异。与OW相比，CW显示出更大的纤维素微纤丝角，更少的纤维素含量和可能更多的凹坑，从而导致较低的拉伸性能。这些发现有助于进一步了解杉木在细胞和细胞壁水平上的结构-机械关系，并为更好地利用人工林软木提供了科学依据。