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Official Journal of the Japan Wood Research Society

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Mechanical properties of wood swollen in organic liquids with two or more functional groups for hydrogen bonding in a molecule

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Abstract

The modulus of elasticity and the modulus of rupture during static bending in the radial direction, and the viscoelastic properties in the radial direction in the temperature range 20°–100°C of hinoki (Chamaecyparis obtusa) swollen in organic liquids with two or more functional groups in a molecule were compared with those of wood swollen by moisture. The wood swollen in organic liquids in or near the swelling equilibrium, but not that swollen in organic liquids distant from the swelling equilibrium, showed higher moduli of elasticity and rupture than the wood swollen to a similar degree by moisture. This suggests that wood exists in an unstable state as it approaches the swelling equilibrium, rendering it highly flexible and weak. During the first viscoelastic measurements for wood swollen in various organic liquids, thermal softening was observed in 40°–60°C range and above 80°C, though this softening disappeared during the second measurement. The softening observed in the 40°–60°C range and above 80°C was thought to have been caused by the redistribution of liquid toward the equilibrium state at a higher temperature and the swelling accompanying an elevated temperature, respectively.

References

  1. 1.

    Stamm AJ (1964) Wood and cellulose science. Ronald Press, New York, p 274

  2. 2.

    Kadita S, Yamada T, Suzuki M (1961) Study on rheological properties of wood. I. Effect of moisture content on the dynamic Young's modulus of wood (in Japanese). Mokuzai Gakkaishi 7:29–33

  3. 3.

    Ishimaru Y, Minase T (1992) Mechanical properties of wood in various stages of swelling. I. Mechanical and swelling behavior of wood swollen in various organic liquids (in Japanese). Mokuzai Gakkaishi 38:550–555

  4. 4.

    Ishimaru Y, Yamada Y, Iida I, Urakami H (1996) Dynamic viscoelastic properties of wood in various stages of swelling (in Japanese). Mokuzai Gakkaishi 42:250–557

  5. 5.

    Ishimaru Y, Maruta T (1996) Wood swelling and its transverse anisotropy in organic liquids having two or more functional groups in a molecule (in Japanese). Mokuzai Gakkaishi 42:234–242

  6. 6.

    Robertson AA (1964) Cellulose-liquid interaction. Pulp Paper Mag Can 65:T171-T178

  7. 7.

    Hansen CM (1967) The three dimensional solubility parameter: key to paint component affinities. J Paint Technol 39:104–117

  8. 8.

    Kuwata T (ed) (1967) In: Japan Association of Synthetic Chemistry of Organic Compounds: solvent pocket book, Yozai pocket book (in Japanese). Ohomu Sha, Tokyo, pp 479–485, 517–522, 531–532, 534, 559–561

  9. 9.

    Miyabe H (ed) (1968) In: Japan Society of Polymer Science: hand book of material and moisture [Zairyo to Mizu Handbook] (in Japanese). Kyoritu Shuppan, Tokyo, pp 240–262

  10. 10.

    Mantanis GI, Young RA, Rowell RM (1994) Swelling of wood. II. Swelling in organic liquids. Holzforschung 48:480–490

  11. 11.

    Mantanis GI, Young RA, Rowell RM (1995) Swelling of wood. III. Effect of temperature and extractives on rate and maximum swelling. Holzforschung 49:239–248

  12. 12.

    Furuta Y, Norimoto M, Yano H (1998) Thermal-softening properties of water-swollen wood. V. The effect of drying and heating histories (in Japanese). Mokuzai Gakkaishi 44:82–88

  13. 13.

    Morisato K, Ishimaru Y, Urakami H (1997) Adsorption of liquids and swelling of wood. III. Adsorption of some organic liquids onto dried wood (in Japanese). Mokuzai Gakkaishi 43:986–992

  14. 14.

    Tokumoto M (1994) Creep and set of wood in the non-equilibrium states of moisture (in Japanese). Mokuzai Gakkaishi 40:1157–1164

  15. 15.

    Furuta Y, Yano H, Norimoto M (1998) Thermal-softening properties of water-swollen wood. I. The effect of drying history (in Japanese). Mokuzai Gakkaishi 41:718–721

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Correspondence to Yutaka Ishimaru.

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Key words

  • Wood
  • Swelling
  • Organic liquid
  • Mechanical properties
  • Hydrogen bonding