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Liquid penetration of freeze-drying and air-drying wood of plantation Chinese fir

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Abstract

A comparative study was conducted on liquid penetration of the freeze-drying and air-drying sapwood and heartwood lumber of plantation Chinese fir (Cunninghamia lanceolata). The maximum amount of dyeing solution uptake by the capillary rise method was used to evaluate the liquid penetration properties of the treated wood. The pit aspiration ratio was, determined by semithin section method. Changes in wood microstructure were investigated using scanning electron microscopy. The results showed that compared with air drying, the freeze drying had a significant effect on liquid penetration of sapwood and heartwood of Chinese fir. The liquid penetration of sapwood is significantly higher than that of the heartwood for both drying treatments. Low pit aspiration ratio and cracks of pits membrane of some bordered pits are the main reasons for increasing liquid penetration after freeze drying treatment.

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Authors and Affiliations

  1. Research Institute of Wood Industry, Chinese Academy of Forestry, 10009, Beijing, P. R. China

    Lu Jian-xiong, Lin Zhi-yuan, Jiang Jia-li & Jiang Jing-hui

Authors
  1. Lu Jian-xiong
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  2. Lin Zhi-yuan
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  3. Jiang Jia-li
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  4. Jiang Jing-hui
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Additional information

Foundation item: This paper was supported by the National Natural Science Foundation of China (No. 30271053)

Biography: LU Jian-Xiong (1963-), male, Ph. D, professor in the Research Institute of Wood Industry. Chinese Academy of Forestry, Beijing 100091, P. R. China.

Responsible editor: Chai Ruihai

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Jian-xiong, L., Zhi-yuan, L., Jia-li, J. et al. Liquid penetration of freeze-drying and air-drying wood of plantation Chinese fir. Journal of Forestry Research 16, 293–295 (2005). https://doi.org/10.1007/BF02858192

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  • DOI: https://doi.org/10.1007/BF02858192

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