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Tin-based metal bath heat treatment: an efficient and recyclable green approach for Pinus massoniana wood modification

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Abstract

Pinus massoniana L. was thermally treated with low melting point alloy as heating medium to investigate the strength properties changes. Contact angle, color and scanning electron microscopy were recorded to assess the effectiveness of the treatment. Samples were pre-treated in a micro-wave for 5 min followed by metal bath heat treatment at 150, 180, and 210 °C for 2, 4, and 8 h, respectively. Strength properties of metal bath treated wood were decreased with increase temperature and time. Density, modulus of rupture, impact bending, modulus of elasticity were reduced for all treatments. Maximum compressive strength slightly increased at 150 °C for 4 h followed by gradual reduction. The Janka hardness was reduced in the tangential and radial directions. Treatment of the wood at 210 °C for 8 h caused the wood to become brittle and rupture. The contact angle was considerably higher after thermal treatment. The color of the wood became darker with increasing temperature of thermal treatment. Micrographs of the heat-treated samples showed damage to the cell wall with increase in temperature. Metal bath heat treatment of wood was carried out successfully and some strength properties were reduced.

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Authors and Affiliations

  1. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, People’s Republic of China

    Kufre Edet Okon

  2. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, People’s Republic of China

    Kufre Edet Okon, Fengcai Lin, Yandan Chen & Biao Huang

  3. Department of Forestry and Natural Environmental Management, Faculty of Agriculture, University of Uyo, P. M. B. 1017, Uyo, Akwa Ibom State, Nigeria

    Kufre Edet Okon

Authors
  1. Kufre Edet Okon
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  2. Fengcai Lin
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  3. Yandan Chen
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  4. Biao Huang
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Corresponding author

Correspondence to Biao Huang.

Additional information

Project funding: This work was financially supported by the Special Scientific Research Fund for Public Service Sectors of Forestry (Grant No. 201504603), Science and Technology Projects of Fujian Province (2014NZ003), and the National Natural Science Foundation of China (Grant Nos. 31370560, 31170520).

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Corresponding editor: Yu Lei.

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Okon, K.E., Lin, F., Chen, Y. et al. Tin-based metal bath heat treatment: an efficient and recyclable green approach for Pinus massoniana wood modification. J. For. Res. 29, 1807–1814 (2018). https://doi.org/10.1007/s11676-017-0573-6

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  • DOI: https://doi.org/10.1007/s11676-017-0573-6

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