Journal of the Korean Wood Science and Technology

About Journal of the Korean Wood Science and Technology

The Journal of the Korean Wood Science and Technology (JKWST) launched in 1973 as an official publication of the Korean Society of Wood Science and Technology has been served as a core of knowledges on wood science and technology. The Journal acts as a medium for the exchange of research in the area of science and technology related to wood, and publishes results on the biology, chemistry, physics and technology of wood and wood-based products. Research results about applied sciences of wood-based materials are also welcome. The Journal is published bimonthly, and printing six issues per year. Supplemental or special issues are published occasionally.
Review Article

Jul 25, 2024

Review on Water Vapor Diffusion through Wood Adhesive Layer

Omar Saber ZINAD, Csilla CSIHA

J. Korean Wood Sci. Technol. 2024;52(4):301-318.
https://doi.org/10.5658/WOOD.2024.52.4.301

Contrary to other materials like metals, glass, etc., wood continuously interacts with the environment, increasing and decreasing its moisture content according to the humidity of the air and changing its dimensions by swelling or shrinking. Water diffusion through laminated solid wood is crucial in wood bonding processes. The adhesive layer might block the diffusion if the water vapor diffusion is perpendicular to the bond line. As a result of this blockage, different proportions of deformation appear on the two sides of the bond line, which c...
Original Article

Jul 25, 2024

Investigating into the Death Years of Evergreen Conifers in Landslide Areas of Jirisan National Park and the Abrupt Growth Reduction During Their Living

Jun-Hui PARK, En-Bi CHOI, Yo-Jung KIM, Ju-Ung YUN, Jin-Won KIM, Hyeon-Ho MYEONG, Jeong-Wook SEO

J. Korean Wood Sci. Technol. 2024;52(4):319-330.
https://doi.org/10.5658/WOOD.2024.52.4.319

The present study aimed to investigate the death years of conifers to verify the time difference between landslide occurrence in 2011 and tree mortality near Chibanmok and Jangteomok shelters in the Jirisan National Park. Furthermore, abrupt growth reduction was also investigated to verify the living conditions when they were living. For the study, tree-ring analysis was conducted by selecting 14 living Abies koreana near the landslide area and 7 dead ones in the landslide area in the Chibanmok site, and 13 living conifers (7 Picea jezoensis, 5...
Original Article

Jul 25, 2024

Resistance of Wood Plastic Composites Having Silica Filler to Subterranean Termite

Aujchariya CHOTIKHUN, Wa Ode Muliastuty ARSYAD, Emilia-Adela SALCA, Yusuf Sudo HADI, Salim HIZIROGLU

J. Korean Wood Sci. Technol. 2024;52(4):331-342.
https://doi.org/10.5658/WOOD.2024.52.4.331

Rubberwood (Hevea brasiliensis) has excellent physical and mechanical properties and is one of the most widely used species in Southeast Asia. However, it has poor resistance to subterranean termite attacks due to its high sugar and starch contents. The objective of this study was to evaluate the termite resistance of experimental wood-plastic composite (WPC) panels manufactured from rubberwood flour, polyethylene terephthalate, and silica in three different weight ratios (1/2/7, 1/3/6, and 1/4/5). The panels were exposed to Coptotermes curvign...
Original Article

Jul 25, 2024

Ensuring Consumer Safety: Molecular Authentication of Eurycoma longifolia Derivative Products in the Wood Science and Technology Industry

Arida SUSILOWATI, Henti Hendalastuti RACHMAT, Kusumadewi Sri YULITA, Asep HIDAYAT, Susila SUSILA, Nawwall ARROFAHA, Irsyad KAMAL, Fifi Gus DWIYANTI

J. Korean Wood Sci. Technol. 2024;52(4):343-362.
https://doi.org/10.5658/WOOD.2024.52.4.343

Eurycoma longifolia (pasak bumi) is a popular medicinal plant in Indonesia and is widely used in various products. Its high economic value has caused illegal harvesting and product falsification. Using molecular techniques, the authentication and traceability of E. longifolia derivatives can be controlled to ensure consumer safety. Therefore, this study aimed to authenticate the products and derivatives of E. longifolia (pasak bumi) produced, marketed, and consumed in Indonesia using molecular identification techniques. Genomic DNA from 37 leaf...
Original Article

Jul 25, 2024

Improving the Calorific Value of Nyamplung (Calophyllum inophyllum L.) Seed Shell Pellets by Torrefaction Treatment for Their Use as a Renewable Energy Resource

Johanes Pramana Gentur SUTAPA, Geraldy KIANTA, Budi LEKSONO, Ahmad Harun HIDAYATULLAH

J. Korean Wood Sci. Technol. 2024;52(4):363-374.
https://doi.org/10.5658/WOOD.2024.52.4.363

Nyamplung (Calophyllum inophyllum L.) seeds, which account for 40% of the fruit, have been used as a raw material for biofuels, and the seed shells remaining after their extraction are wasted. In this study, we investigated the potential of waste Nyamplung seed shells in the form of pellets as a biomass energy resource. A completely randomized research design was implemented to evaluate the effects of torrefaction and heat treatment on the quality of produced pellets. Two observed treatments, namely, particle size (0.18–0.25, 0.25–0.43, and...
Original Article

Jul 25, 2024

Evaluation of Bending Creep Performance of Laminated Veneer Lumber (LVL) Formwork for the Design of Timber Concrete Composite (TCC) Structures

Hyun Bae KIM, Takuyuki YOSHIOKA, Kazuhiko FUJITA, Jun ITO, Haruka NOHARA, Keiji NOHARA, Toshiki NARITA, Wonwoo LEE, Arata HOSOKAWA, Tetsuiji TANAKA

J. Korean Wood Sci. Technol. 2024;52(4):375-382.
https://doi.org/10.5658/WOOD.2024.52.4.375

The study focuses on evaluating the bending creep performance of laminated veneer lumber (LVL) formwork in timber concrete composite (TCC) structures. Timber-framed construction is highlighted for its environmental benefits and seismic resistance, but limitations such as poor tensile strength and brittle failure in bending hinder its use in high-rise buildings. Wood-concrete hybrid structures, particularly those using reinforced concrete slabs with TCC floors, emerge as a potential solution. The research aims to understand the time-dependent be...
Original Article

Jul 25, 2024

Physical and Mechanical Properties of Laminated Board from Betung Bamboo (Dendrocalamus asper)

Muhammad Navis ROFII, Michael Jose MAIRING, Tomy LISTYANTO, Ihak SUMARDI, Rudi HARTONO

J. Korean Wood Sci. Technol. 2024;52(4):383-392.
https://doi.org/10.5658/WOOD.2024.52.4.383

Laminated bamboo is an engineered bamboo technology to maintain its mechanical durability for both construction and furniture materials. This study was conducted to assess the properties of laminated bamboo made from Betung bamboo at different culm positions and laminate orientations. The materials used in this study were 4-year Betung bamboo (Dendrocalamus asper) obtained from a community forest in Yogyakarta and polyvinyl acetate resin as adhesive. Two factors were applied for this study, i.e., culm position (lower, middle, and upper) and lam...
Original Article

Jul 25, 2024

Fiber Quality of Seven Mangrove Wood Species

ANDIANTO, Imam WAHYUDI, Rita Kartika SARI, Gustan PARI

J. Korean Wood Sci. Technol. 2024;52(4):393-403.
https://doi.org/10.5658/WOOD.2024.52.4.393

As an archipelagic country, Indonesia is surrounded by large and small islands. Many mangrove plant species are found along the coasts surrounding large and small islands. Besides their conservation value, mangrove plants provide various benefits, including the use of their leaves, fruit, bark, and wood as raw materials in pharmaceutical and other industries. Additionally, mangrove wood is a potential raw material for pulp and paper production. It is essential to study the fiber dimensions of the wood to identify the appropriate characteristics...
Erratum

Jul 25, 2024

Erratum to: Evaluation of Adhesive Characteristics of Mixed Cross Laminated Timber (CLT) Using Yellow Poplar and Softwood Structural Lumber

Keon-Ho KIM, Hyun-Mi LEE, Min LEE

J. Korean Wood Sci. Technol. 2024;52(4):404
https://doi.org/10.5658/WOOD.2024.52.4.404

CURRENT ISSUE: Jul 2024, Vol. 52, No. 4

Review Article Review on Water Vapor Diffusion through Wood Adhesive Layer Omar Saber ZINAD, Csilla CSIHA J. Korean Wood Sci. Technol. 2024;52(4):301-318. https://doi.org/10.5658/WOOD.2024.52.4.301 HTML PDF PubReader	Original Article Investigating into the Death Years of Evergreen Conifers in Landslide Areas of Jirisan National Park and the Abrupt Growth Reduction During Their Living Jun-Hui PARK, En-Bi CHOI, Yo-Jung KIM, Ju-Ung YUN, Jin-Won KIM, Hyeon-Ho MYEONG, Jeong-Wook SEO J. Korean Wood Sci. Technol. 2024;52(4):319-330. https://doi.org/10.5658/WOOD.2024.52.4.319 HTML PDF PubReader
Original Article Resistance of Wood Plastic Composites Having Silica Filler to Subterranean Termite Aujchariya CHOTIKHUN, Wa Ode Muliastuty ARSYAD, Emilia-Adela SALCA, Yusuf Sudo HADI, Salim HIZIROGLU J. Korean Wood Sci. Technol. 2024;52(4):331-342. https://doi.org/10.5658/WOOD.2024.52.4.331 HTML PDF PubReader	Original Article Ensuring Consumer Safety: Molecular Authentication of Eurycoma longifolia Derivative Products in the Wood Science and Technology Industry Arida SUSILOWATI, Henti Hendalastuti RACHMAT, Kusumadewi Sri YULITA, Asep HIDAYAT, Susila SUSILA, Nawwall ARROFAHA, Irsyad KAMAL, Fifi Gus DWIYANTI J. Korean Wood Sci. Technol. 2024;52(4):343-362. https://doi.org/10.5658/WOOD.2024.52.4.343 HTML PDF PubReader
Original Article Improving the Calorific Value of Nyamplung (Calophyllum inophyllum L.) Seed Shell Pellets by Torrefaction Treatment for Their Use as a Renewable Energy Resource Johanes Pramana Gentur SUTAPA, Geraldy KIANTA, Budi LEKSONO, Ahmad Harun HIDAYATULLAH J. Korean Wood Sci. Technol. 2024;52(4):363-374. https://doi.org/10.5658/WOOD.2024.52.4.363 HTML PDF PubReader	Original Article Evaluation of Bending Creep Performance of Laminated Veneer Lumber (LVL) Formwork for the Design of Timber Concrete Composite (TCC) Structures Hyun Bae KIM, Takuyuki YOSHIOKA, Kazuhiko FUJITA, Jun ITO, Haruka NOHARA, Keiji NOHARA, Toshiki NARITA, Wonwoo LEE, Arata HOSOKAWA, Tetsuiji TANAKA J. Korean Wood Sci. Technol. 2024;52(4):375-382. https://doi.org/10.5658/WOOD.2024.52.4.375 HTML PDF PubReader
Original Article Physical and Mechanical Properties of Laminated Board from Betung Bamboo (Dendrocalamus asper) Muhammad Navis ROFII, Michael Jose MAIRING, Tomy LISTYANTO, Ihak SUMARDI, Rudi HARTONO J. Korean Wood Sci. Technol. 2024;52(4):383-392. https://doi.org/10.5658/WOOD.2024.52.4.383 HTML PDF PubReader	Original Article Fiber Quality of Seven Mangrove Wood Species ANDIANTO, Imam WAHYUDI, Rita Kartika SARI, Gustan PARI J. Korean Wood Sci. Technol. 2024;52(4):393-403. https://doi.org/10.5658/WOOD.2024.52.4.393 HTML PDF PubReader
Erratum Erratum to: Evaluation of Adhesive Characteristics of Mixed Cross Laminated Timber (CLT) Using Yellow Poplar and Softwood Structural Lumber Keon-Ho KIM, Hyun-Mi LEE, Min LEE J. Korean Wood Sci. Technol. 2024;52(4):404 https://doi.org/10.5658/WOOD.2024.52.4.404 HTML PDF PubReader

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