<Note>Some Physical Properties of Wood and Cellulose Irradiated with Gamma Rays

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概要

• 論文の詳細を見る

• この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。The effect of gamma irradiation from cobalt-60 on specific gravity, degree of crystallinity, thermal softening temperature, tensile strength and torsional creep behavior of wood and cellulose were investigated and the following results were obtained. 1) A dosage up to about 10^8 rad had little effect on the specific gravity of wood and cellulose. 2) The degree of crystallinity of wood and cellulose remained almost unchanged up to 3×10^7 rad, but started to decrease rapidly at about 1×10^8 rad. 3) The softening temperature of cellulose shifted gradually to a lower temperature region up to about 3×10^7 rad and abruptly in the range exceeding 3×10^7 rad. 4) Strength of wood decreased with increasing irradiation dosage, depending remarkably on loading modes. 5) The value of creep compliance of wood at time 0.1 min did not change up to 1×10^7 rad, but increased markedly in the range exceeding about 3×10^7 rad.

• 京都大学の論文
• 1977-02-28

著者

• Aoki Tsutomu

  Division Of Wood Physics Wood Research Institute Kyoto University

• Norimoto Misato

  Division Of Wood Physics Wood Research Institute Kyoto University

• YAMADA Tadashi

  Divison of Wood Physics, WOOD RESEARCH INSTITUTE, KYOTO UNIVERSITY

• Yamada Tadashi

  Division Of Wood Physics Wood Research Institute Kyoto University

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• Porous Structure of Wood and its Relaxation Modulus, II
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• The Viscoelastic Properties of Wood Used for Musical Instruments II
• Effect of Indole-3-Acetic Acid on Tensile Creep of Japanese Black Pine Hypocotyl

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