• Title/Summary/Keyword: Journal of the Korean Wood Science and Technology

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Challenges of Wood Modification Process for Plantation Eucalyptus: A Review of Australian Setting

  • GHANI, Ros Syazmini Mohd;LEE, Man Djun
    • Journal of the Korean Wood Science and Technology
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    • v.49 no.2
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    • pp.191-209
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    • 2021

  • Australia has significant wood resources in its native forest, but the resource available for harvest becomes lesser due to the conversion of native forest to conservation reserves. The natural occurrences of bushfires, droughts, and cyclones are highly destructive, making the situation worse. The shortage of wood resources is having a significant negative impact on Australia because wood is so scarce that they cannot meet domestic demands, especially durable wood. Australia cleared approximately 100 million hectares of its land to establish forest plantations, and two million trees were planted. However, most of these plantations are for pulpwood production; however, their application for high-value products is limited due to their undesirable properties. Wood modification is a process of improving unfavorable wood properties to be utilized for a wide range of applications. Australia has not adopted any of these modification processes; it still depends on the less toxic wood preservative to treat wood. This study focuses on the recent advancement in industrial wood modification worldwide and how it may be used to modify Eucalyptus wood for high-value applications. The opportunities and suggestions for Eucalyptus wood modification in Australia will be discussed. Before the study concludes, the future of commercial wood modification for Eucalyptus plantation in Australia will also be presented.

  • https://doi.org/10.5658/WOOD.2021.49.2.191 인용 PDF KSCI

A Study on the Distribution and Time Dependent Change of Wood Temperature by Solar Radiation

  • Xu, Hui Lan;Kang, Wook;Chung, Woo Yang
    • Journal of the Korean Wood Science and Technology
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    • v.37 no.2
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    • pp.141-147
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    • 2009

  • The fluctuation of physical properties in wood or wood composites is an important subject when the materials in building and construction. Sorption and desorption occur in wood when exposed to the open air, and the temperature distribution in wood can fluctuate as a result of changes in environmental temperature, solar radiation, humidity, and wind velocity. In this study, the temperature difference and fluctuation caused by outdoor environment among different wood species were analyzed using a numerical method. The effect on the process of heat transfer in wood caused by environmental factors was investigated using 1-dimensional partial differential equation with real boundary and initial conditions. The experimental data have been used to check the accuracy of programming code. Through analysis, it was found out that density and moisture content have a negative effect on thermal diffusivity of wood.

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Spectroscopic Characterization of Wood Surface Treated by Low-Temperature Heating (저온 열처리 목재 표면의 분광학적 특성)

  • Kim, Kang-Jae;Nah, Gi-Baek;Ryu, Ji-Ae;Eom, Tae-Jin
    • Journal of the Korean Wood Science and Technology
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    • v.46 no.3
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    • pp.285-296
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    • 2018

  • As a study for the verification of heat treated wood according to ISPM No. 15, the spectroscopic characteristics of the heat treated wood surface were analyzed. Various functional groups were observed on the IR spectrum, but it was difficult to find any particular difference between wood species, heat treatment time and storage period. HBI (hydrogen-bonding intensity) shows the change of the heat treated wood according to the storage time, but the change of wood with the heat treatment time was hard to be observed. On the PCA score plot, however, it was possible to sort the wood according to the heat treatment time of 60 minutes or 90 minutes in the species. The standards for classification of heat-treated wood in PCA were aromatic rings in lignin and C-H bending in cellulose, and these components were able to classify heat-treated wood by ISPM No. 15.

  • https://doi.org/10.5658/WOOD.2018.46.3.285 인용 PDF KSCI