Effects of Repeated Wet-and-dry Treatments on Water and Gas Adsorption Performance of Wood

  • Toba Keisuke
    Gifu University Composite Materials Center, Gifu University
  • Nakai Takahisa
    Interdisciplinary Graduate School of Science and Engineering, Shimane University
  • Yamamoto Hiroyuki
    Graduate School of Bio-agricultural Sciences, Nagoya University
  • Yoshida Masato
    Graduate School of Bio-agricultural Sciences, Nagoya University
  • Nishio Nobuhiro
    Interdisciplinary Graduate School of Science and Engineering, Shimane University

Bibliographic Information

Other Title
  • 木材の水分およびガス吸着性能に及ぼす乾湿繰り返し処理の影響
  • モクザイ ノ スイブン オヨビ ガス キュウチャク セイノウ ニ オヨボス カンシツ クリカエシ ショリ ノ エイキョウ

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Description

We evaluated the water and gas adsorption performances of sugi (Cryptomeria japonica D. Don) crosscut and quarter-sawn specimens, which were given three or six repetitions of dry-and-wet treatments under the room temperature or high temperature conditions. Equilibrium moisture content of all specimens decreased with the progress of repeated wet-and-dry treatments, regardless of the effect of heating. On the other hand, amounts of nitrogen gas adsorption increased with the progress of repeated wet-and-dry treatments, especially in the quarter-sawn specimen. These phenomena, observed in both water and nitrogen gas adsorption, suggest that repeated drying and re-swelling decreased the amount of hydrophilic regions such as noncrystalline cellulose at the microscopic level. It is also considered that cracks and pores would arise on the surface of wood cell walls at the submicroscopic level.

Journal

  • Mokuzai Gakkaishi

    Mokuzai Gakkaishi 59 (6), 334-338, 2013

    The Japan Wood Research Society

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