Article
Forestry
Norwahyuni Mohd Yusof, Lee Seng Hua, Paridah Md Tahir, Redzuan Mohammad Suffian James, Syeed Saifulazry Osman Al-Edrus, Rasdianah Dahali, Adlin Sabrina Muhammad Roseley, Widya Fatriasari, Lubos Kristak, Muhammad Adly Rahandi Lubis, Roman Reh
Summary: The study investigated the effects of boric acid treatment on the physical, mechanical, adhesion, and morphological properties of bamboo strips. It found that the treatment had varying degrees of effect on different species of bamboo, but it provided several benefits including increased wettability, dimensional stability, and mechanical strength for bamboo strips intended for lamination.
Article
Forestry
Wan Nabilah Ahamad, Sabiha Salim, Seng Hua Lee, Muhammad Aizat Abdul Ghani, Rabiatol Adawiah Mohd Ali, Paridah Md Tahir, Widya Fatriasari, Petar Antov, Muhammad Adly Rahandi Lubis
Summary: In this study, oil palm wood from the inner layer of the trunk was treated with phenolic resin and laminated with other hardwoods, resulting in improved properties. Higher resin concentration (20%) and compression ratio (30%) led to the highest weight percent gain, polymer retention, and density. The laminated compreg hybrid panels with higher resin concentrations (20%) exhibited better physical and mechanical properties.
Article
Forestry
Norwahyuni Mohd Yusof, Paridah Md Tahir, Seng Hua Lee, Mohd Khairun Anwar Uyup, Redzuan Mohammad Suffian James, Syeed Saifulazry Osman Al-Edrus, Lubos Kristak, Roman Reh, Muhammad Adly Rahandi Lubis
Summary: This study investigated the influence of species, adhesive types, and lamination configurations on the shear performance of laminated bamboo boards. It was found that PRF-bonded boards exhibited higher shear strength and bamboo failure, while PUR-bonded boards showed better bond durability with low delamination. Parallel lamination outperformed perpendicular lamination, and PRF adhesive showed consistent performance across different structural configurations.
Article
Forestry
Ahmet Can, Ismail Ozlusoylu, Petar Antov, Seng Hua Lee
Summary: Due to their adaptability and low preparation costs, deep eutectic solvents (DESs) have been widely used in various applications. Developing new low-cost DESs is critical for potential industrial applications. In this study, DES solutions were made by mixing oxalic acid (OA), acetic acid (AA), urea (Ur), and glycerol (GL) in various molar ratios, with choline chloride (ChCL) as the hydrogen bond acceptor (HBA). The chemical structures of wood samples were significantly changed after impregnation with DES solutions, and the decay resistance and decomposition temperature of the treated wood samples were also altered.
Article
Forestry
Ahmet Can, Seng Hua Lee, Petar Antov, Muhammad Aizat Abd Ghani
Summary: This study investigated the effects of three different commercial phase change materials on Oriental spruce wood, and found that the materials demonstrated low performance in terms of storing and releasing heat. Additionally, the phase change materials were resistant to wood-destroying fungi, but further large-scale pilot studies are needed.
Article
Forestry
Rasdianah Dahali, Seng Hua Lee, Paridah Md Tahir, Sabiha Salim, Muhammad Syahmi Hishamuddin, Atikah Che Ismail, Pui San Khoo, Tomasz Krystofiak, Petar Antov
Summary: This study investigated the effects of stem canker disease caused by Chrysoporthe deuterocubensis on the chemical properties and durability of a Eucalyptus hybrid (E. urophylla x E. grandis). Chemical analysis and Fourier transform infrared spectroscopy (FTIR) analysis were used to evaluate the changes in chemical properties. The results showed that infected wood had lower cellulose and hemicellulose content, but higher lignin and extractives content. The infected wood exhibited better resistance against fungi and termites, resulting in improved durability.
Editorial Material
Chemistry, Multidisciplinary
Seng Hua Lee, Petar Antov, Lubos Kristak, Roman Reh, Muhammad Adly Rahandi Lubis
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Paper & Wood
Valentina Lo Giudice, Petar Antov, Daniel Koynov, Lubos Kristak, Seng Hua Lee, Muhammad Adly Rahandi Lubis, Marisabel Mecca, Nicola Moretti, Rupali Tiwari, Luigi Todaro
Summary: The primary aim of this research was to investigate and evaluate the effects of thermo-vacuum modification on the characteristics of Siberian larch wood. The results showed that the thermal modification process led to changes in chemical compounds in the wood samples, with some extractives disappearing and new ones being detected. The thermally-modified larch wood had lower volumetric swelling and moisture absorption compared to the untreated samples. The compression strength parallel to the grain was slightly higher in the thermally-treated wood, while the modulus of elasticity was reduced.
WOOD MATERIAL SCIENCE & ENGINEERING
(2023)
Article
Materials Science, Composites
Ratih Afrida Lismana Sari, Muhammad Adly Rahandi Lubis, Rita Kartika Sari, Lubos Kristak, Apri Heri Iswanto, Efri Mardawati, Widya Fatriasari, Seng Hua Lee, Roman Reh, Jan Sedliacik, Muhammad Iqbal Maulana, Lisman Suryanegara, Bambang Subiyanto, Sena Maulana
Summary: This study developed a cold-setting adhesive based on polyvinyl alcohol (P), tannin (T), and hexamine (H), which, when combined with the cold-pressing process, can produce eco-friendly plywood panels that meet Japanese standard strength requirements.
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Polymer Science
Muhammad Ghozali, Samsul Bakhri, Evi Triwulandari, Witta Kartika Restu, Yenny Meliana, Agus Haryono, Melati Septiyanti, Nissa Nurfajrin Solihat, Seng Hua Lee, Widya Fatriasari, Petar Antov
Summary: This research aimed to develop an environmentally friendly alternative method for manufacturing polyurethanes without the use of isocyanate compounds by synthesizing green urethane from oleic acid. Three stages were involved in the synthesis process, and the resulting product was characterized by various analyses. The successful synthesis of green urethane was confirmed.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Review
Polymer Science
M. S. A. Rani, M. N. F. Norrrahim, V. F. Knight, N. M. Nurazzi, K. Abdan, S. H. Lee
Summary: The ever-increasing global population necessitates a secure and ample energy supply, the majority of which is derived from fossil fuels. However, due to the immense energy demand, the exponential depletion of these non-renewable energy sources is both unavoidable and inevitable in the approaching century. Therefore, exploring the use of polymer electrolytes as alternatives in proton-conducting batteries opens an intriguing research field, as demonstrated by the growing number of publications on the subject. This paper provides a detailed overview of these characterizations, as well as recent advancements in characterization methods for proton-conducting polymer electrolytes in solid-state batteries. Each characterization is evaluated based on its objectives, experimental design, a summary of significant results, and a few noteworthy case studies. Finally, we discuss future characterizations and advances.
Article
Materials Science, Paper & Wood
Adik Bahanawan, Yeyen Nurhamiyah, Nissa Nurfajrin Solihat, Widya Fatriasari, Petar Antov, Seng Hua Lee
Summary: This study evaluated the properties of three main fast-growing wood species in Indonesia and found that wood properties can be predicted based on its color appearance, which is of great importance for the rapid identification and utilization of wood in industrial applications.
WOOD MATERIAL SCIENCE & ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Viktor Savov, Petar Antov, Christian Panchev, Muhammad Adly Rahandi Lubis, Seng Hua Lee, Hamid R. Taghiyari, Martina Todorova, Stoyko Petrin
Summary: Unlike particleboards, the recycling of medium-density fiberboards (MDF) is not widespread, leading to landfilling or incineration. This research focuses on studying the effect of hydrolysis regime on the properties of recycled MDF fibers. The results show that the hydrolysis process does not significantly affect the elemental composition of the fibers. Rating: 8 out of 10.
Article
Chemistry, Multidisciplinary
Aujchariya Chotikhun, Rattikal Laosena, Jitralada Kittijaruwattana, Seng Hua Lee, Kanokorn Sae-Ueng, Charoen Nakason, Yutthapong Pianroj, Emilia-Adela Salca
Summary: This research investigates the production and properties of wood plastic pellets made from rubberwood sawdust and refuse-derived fuel. The elemental compositions and physical properties of the pellets are analyzed, showing their potential as sustainable green energy fuels. Using refuse-derived fuel also contributes to global warming mitigation.
APPLIED SCIENCES-BASEL
(2023)
Article
Agricultural Engineering
Nurul Hazwani Abd Hilmi, Valeritta Lodin, Melissa Sharmah Gilbert Jesuet, Sabiha Salim, Seng Hua Lee, Naruhito Hori, Akio Takemura, Ismawati Palle
Summary: Depending on the reaction conditions, liquefaction of woody biomass produces a variety of polyol properties. This study investigated the liquefaction of Eucalyptus pellita wood powder and optimized the conditions for maximum yield. The resulting polyol was then used to prepare polyurethane films, and the performance of the films was evaluated. The study found that using glycerol as a co-solvent improved the liquefaction process, resulting in high wood conversion. The obtained films showed improved tensile strength and maximum elongation at higher NCO/OH ratios.
INDUSTRIAL CROPS AND PRODUCTS
(2023)