Bamboo has attracted widespread attention owing to its strong mechanical properties, availability in numerous regions, and green and low-carbon nature. However, the hydrophilic nature and susceptibility to mold growth limit its wide application.
Wood densification is a technique to enhance wood density and hardness, presenting a promising solution to expand wood use across various applications. However, current densification methods have cost and environmental impact limitations. This …
Coniferous forests in the European Union serve as crucial sources of roundwood, as well as contribute to various industries with different wood products. Harvesting of these trees leaves significant amounts of needles and small branches (logging …
verfasst von:
Alise Zommere, Linards Klavins, Vizma Nikolajeva, Agnese Kukela, Kalle Kaipanen, Risto Korpinen, Maris Klavins
This study utilized a self-developed gas permeability–porosity integrated analyzer to examine the gas permeability and porosity of pine, cypress, and Cunninghamia conifers across different wood orientations and parts. The findings reveal that the …
verfasst von:
Kaiyuan Li, Chongpeng Ye, Wei Peng, Yanyan Zou, Xi Deng, Linlin Yi, Xujuan Wu
Wood is a primary building tool for ancient buildings and structures, but for those that survive to date, naturally aged wood may pose a noteworthy fire hazard. There are potential risks to health, safety, and substantial cultural loss if fire …
High variations in juvenile wood properties in the radial direction and its worse performance than mature wood make it less suitable for some applications and often treated as waste material. This study aimed to assess how thermal modification …
verfasst von:
Magdalena Broda, Carmen-Mihaela Popescu, Kamil Poszwa, Edward Roszyk
Thermogravimetric analysis (TGA) was performed on five softwood and five hardwood thin wood samples in the longitudinal (L) and radial (R) directions. Dimensional changes were monitored using a charge-coupled device camera under a nitrogen flow. A …
The product of thermochemical processing of lignocellulosic biomass is biochar. It has a range of properties that make it suitable for a variety of economic applications. However, during pyrolysis and torrefaction, volatile organic compounds …
This work is devoted to dimensional changes in oak wood induced by the adsorption of water and ethanol molecules during barrel aging of wine and spirits. A custom device has been developed to determine the deformations in the radial and tangential …
verfasst von:
Cédric Dussaut, Julien Colin, Joel Casalinho, Rémi Teissier Du Cros, François Litoux-Desrues, Charlotte Abadie, Patrick Perré
This research paper studies the influence that the number of plies has on the identification of the mechanical properties of poplar Laminated Veneer Lumber (LVL) from tensile tests such as its stiffness. LVL poplar specimens were prepared with …
verfasst von:
A. Peignon, J. Serra, A. Cantarel, F. Eyma, B. Castanié
The reaction mechanism of the Dakin reaction for three lignin model compounds was thoroughly investigated using density functional theory (DFT). A more comprehensive atomic and molecular level oxidation mechanism for the Dakin reaction was …
verfasst von:
Shuqi Dong, Zhehui Zhang, Hui Zhang, Xia Du, Zhuohua Sun, Yan Shang, Tingyu Yao
There is currently no quality sorting of harvested hardwood timber in Norway on a national scale. Medium- and high-quality logs including those from birch (Betula pubescens Ehrh., B. pendula Roth) are thus not utilized according to their potential …
The histogenesis of reaction wood in woody plants is a promising area of exploration for emerging wood technology products and for a generalized understanding of stress physiology. The activity of total protein and antioxidant enzymes were …
verfasst von:
Abasali Masoumi, Jason Grabosky, Frank W. Telewski
The paper focuses on a multilevel analysis considering six species of bamboo of the Phyllostachys family (P. bambusoides, edulis, iridescens, viridiglaucescens, violacescens, and vivax) and Arundo donax grown in temperate climates, most of them …
verfasst von:
Silvia Greco, Luisa Molari, Giovanni Valdrè, Jose Jaime Garcia
Developing a moisture-stable structural material with high toughness is essential for improving the stability of packaging and building materials. Wood is a pervasive structural material with naturally good mechanical properties. However …
The differential swelling seen between softwood opposite wood (OW) and its neighbouring compression wood (CW) developed in branches prompts several engineering issues such as dimensional instability and cracking. For a more efficient use of …
verfasst von:
Marie Hartwig-Nair, Sara Florisson, Malin Wohlert, E. Kristofer Gamstedt
During the dehydration of waterlogged archaeological wood (WAW), shrinkage inevitably occurs due to capillary force and hydrogen bond recombination as WAW loses free and adsorbed water. Existing drying techniques, including solvent displacement …
verfasst von:
Yihang Zhou, Yue Zhang, Liyan Kan, Yue Wang, Kai Wang, Dongbo Hu
The transient dimensional changes during hygro-expansion and hydro-expansion of freely and restrained dried, softwood and hardwood sheets and fibers is monitored, to unravel the governing micro-mechanisms occurring during gradual water saturation.
verfasst von:
Niels H. Vonk, Eline P. C. van Spreuwel, Thomas Anijs, Ron H. J. Peerlings, Marc G. D. Geers, Johan P. M. Hoefnagels
Considering the bioactive composition and therapeutic interest of Ficus carica, much research has been conducted on its fruits and leaves. However, there has been relatively little investigation regarding the wood bark, despite its potential as a …
verfasst von:
Sonia Yahiaoui, Djamel Edine Kati, Makhlouf Chaalal, Lamiaa M. A. Ali, Khaled El Cheikh, Goeffrey Depaepe, Alain Morère, Chantal Menut, Nadir Bettache, Mostapha Bachir-Bey