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Topic Review
Birch Plywood
Increasing demand pressures on the fibre supply are forcing manufacturers to explore using new species in plywood. Here authors investigated aspen and black alder, alone and in combination with birch faces, and with different veneer thicknesses in plywood production.
  • 3.3K
  • 09 Feb 2022
Topic Review
Bamboo Node’s Vascular Bundle
The vascular bundle is an important structural unit that determines the growth and properties of bamboo. A high-resolution X-ray microtomography (μCT) was used to observe and reconstruct a three-dimensional (3D) morphometry model of the vascular bundle of the Qiongzhuea tumidinoda node due to its advantages of quick, nondestructive, and accurate testing of plant internal structure.
  • 3.1K
  • 23 Dec 2021
Topic Review
Orange Peel Boards
The Orange Peel Board is a panel made by mixture of different proportions dried peels and wet peels. The commonly used processing method is thermo-pressing.  
  • 2.3K
  • 19 Jul 2021
Topic Review
Applications of Lignin in Wood
Lignin is the most abundant aromatic polymer in nature and the second most abundant biomass on earth. In paper production and other processes, lignin is obtained as a side product and mainly used energetically. The use of lignin in wood adhesives or for wood modification has received a lot of scientific attention.
  • 2.3K
  • 25 May 2021
Topic Review
Chemical Composition on Heating Value of Biomass
Biomass has become an increasingly important resource for energy generation. It is well known that the heating value of lignin is significantly higher (23.26–25.58 MJ/kg) than that of polysaccharides (18.6 MJ/kg), while extractives often have higher heating values (HHVs) over 30 MJ/kg, depending on their oxidation levels. Therefore, the proportions of the chemical components in biomass determine its HHV.
  • 1.4K
  • 31 May 2023
Topic Review
Technical Lignins
Lignin is a complex, amorphous, natural polymer, and one of the most abundant in nature, only behind cellulose. Technical lignins are co-products of the manufacture of cellulose pulp for paper. Some examples of technical lignins that will be addressed in this study are lignosulphonates alongside kraft, soda and organosolv lignins.
  • 1.2K
  • 19 Dec 2021
Topic Review
Modification of the Surface of Wood with Plasma
Wood modification is an excellent and increasingly used method to expand the application of woody materials. Traditional methods, such as chemical or thermal, have been developed for the targeted improvement of some selected properties, unfortunately typically at the expense of others. These methods generally alter the composition of wood, and thus its mechanical properties, and enhance dimensional stability, water resistance, or decrease its susceptibility to microorganisms. Although conventional methods achieve the desired properties, they require a lot of energy and chemicals, therefore research is increasingly moving towards more environmentally friendly processes. The advantage of modern methods is that in most cases, they only modify the surface and do not affect the structure and mechanical properties of the wood, while reducing the amount of chemicals used. Cold plasma surface treatment is one of the cheapest and easiest technologies with a limited burden on the environment
  • 1.2K
  • 27 May 2022
Topic Review
Glycosides
Glycosides have been identified in almost every type of plant tissue including leaves, roots, stems, and reproductive organs (i.e., flowering and fruiting bodies). The direct role of glycosides in plants is still uncertain, but it is hypothesized that glycosides were a part of the “chemodiversity” necessary for plants to survive. The addition of sugar moieties onto hydrophobic aglycones changes the overall polarity and water solubility of the aglycone. The increased polarity of the glycoside allows for detoxification, storage, and transport within the plant.
  • 1.1K
  • 11 May 2021
Topic Review
Organosolv Lignin-Based Polyurethane
Polyurethanes (PUs) present an important class of polymers due to outstanding mechanical, chemical and physical properties. Thus, they find application in many industrial sectors in the form of flexible or rigid foams, coatings, adhesives, elastomers, thermoplasts or thermosets. Modern PU coating applications include self-healing coating films that can also be applied to rather rough surfaces, such as wood.
  • 1.1K
  • 22 Mar 2022
Topic Review
Alternative Materials from Agro-Industry for Wood Panel Manufacturing
The growing demand for wood-based panels for buildings and furniture and the increasing worldwide concern for reducing the pressure on forest resources require alternatives to wood raw materials. The agricultural industry not only can provide raw materials from non-wood plants but also numerous residues and side streams. An overview of the availability was supplied, chemical composition, and fiber characteristics of non-wood lignocellulosic materials and agricultural residues, i.e., grow care residues, harvest residues, and process residues, and their relevance for use in wood panel manufacturing. During the crop harvest, there are millions of tons of residues in the form of stalks, among other things. Usually, these are only available seasonally without using storage capacity. Process residues, on the other hand, can be taken from ongoing production and processed further. Fiber characteristics and chemical composition affect the panel properties. Alternatives to wood with long fibers and high cellulose content offer sufficient mechanical strength in different panel types. In general, the addition of wood substitutes up to approximately 30% provides panels with the required strength properties. However, other parameters must be considered, such as pressing temperature, adhesive type, press levels, and pretreatments of the raw material. 
  • 939
  • 14 Jul 2022
Topic Review
Structures and Characteristics of Cellulose and Nanocellulose
Nickerson and Habrl extracted nanomaterials named nanocellulose (NC) from cotton linters by using sulfuric-acid hydrolysis in 1947. Since then, various physical and chemical properties of NC, such as its low weight, low cost, high strength, stiffness, and non-toxic properties have been comprehensively investigated in both academia and industry.
  • 904
  • 19 May 2023
Topic Review
Nanocellulose Nanomorphologies
Nanocellulosic materials have attracted special attention because of their performance in different advanced applications, biodegradability, availability, and biocompatibility. Nanocellulosic materials can assume three distinct morphologies, including cellulose nanocrystals (CNC), cellulose nanofibers (CNF), and bacterial cellulose (BC). 
  • 876
  • 17 May 2023
Topic Review
Nanocellulosic Materials for Oil Spill
Modern developments in cellulosic materials for oil spill removal are briefly showcased in this entry. Different types of lignocellulosic textures and different modification techniques and preparation methods are explained. Materials were classified into 3D-materials such as hydrophobic and oleophobic sponges and aerogels, or 2D-materials such as membranes, fabrics, films, and meshes. Majorly, 3D-materials showed clear correlation between porosity and density, and their absorption behavior. Moreover, it was shown that nanocellulosic precursors are not exclusively suitable to attain considerable absorption performance. This finding can lead to developments in cost- and energy-efficient production processes of future cellulosic oil spillage removal solutions.
  • 847
  • 27 Sep 2021
Topic Review
Invasive Alien Plant Species in European Paper Production
Invasive plant species can impede the establishment and growth of native plants and affect several ecosystem properties. These properties include soil cover, nutrient cycling, fire regimes, and hydrology. Controlling invasive plants is therefore a necessary, but usually expensive, step in restoring an ecosystem. The sustainability of materials with an emphasis on the use of local resources plays an important role in the circular economy. The use of alternative fibers from invasive plants promotes local production in smaller paper mills that offer the protection of local species and the reduction of waste and invasive plants.
  • 825
  • 10 Nov 2022
Topic Review
Green Substrates for Flexible Electronics for IoT
The Internet of Things (IoT) is gaining more and more popularity and it is establishing itself in all areas, from industry to everyday life. Given its pervasiveness and considering the problems that afflict today’s world, that must be carefully monitored and addressed to guarantee a future for the new generations, the sustainability of technological solutions must be a focal point in the activities of researchers in the field. Many of these solutions are based on flexible, printed or wearable electronics. The choice of materials therefore becomes fundamental, just as it is crucial to provide the necessary power supply in a green way.
  • 802
  • 26 Jun 2023
Topic Review
Processing Technology of Thermoplastic-Bonded Wood-Based Panels
When thermoplastic resins such as polyethylene (PE) and polypropylene (PP) are selected as wood adhesives to bond wood by using the hot-pressing technique, the formaldehyde emission issue that has long existed in the wood-based panel industry can be effectively solved. Thermoplastic bonded wood-based panels presented relatively higher mechanical properties, better water resistance and machinability than the conventional urea-formaldehyde resin bonded wood-based panels. Compared with the wood-plastic composites manufactured by extruding or injection-molding methods, thermoplastic bonded wood-based panels have the advantages of larger size, wider raw material range and higher production efficiency. 
  • 782
  • 26 Jan 2022
Topic Review
Modification and Application of Bamboo-Based Materials
In light of continual societal advancement and escalating energy consumption, the pursuit of green, low-carbon, and environmentally friendly technologies has become pivotal. Bamboo, renowned for its diverse advantages encompassing swift growth, ecological compatibility, robust regenerative properties, commendable mechanical characteristics, heightened hardness, and abundant availability, has discovered applications across various domains, including furniture and construction. Nevertheless, natural bamboo materials are plagued by inherent limitations, prominently featuring suboptimal hydrophobicity and vulnerability to fracture, thereby constraining their broad-scale application. Thus, the paramount concern is to enhance the performance of bamboo materials through modification.
  • 701
  • 16 Nov 2023
Topic Review
Thermally Modified Wood Exposed to Different Weathering Conditions
Thermally modified wood (TMW) is a material derived from a treatment that combines temperature and moisture, avoiding harmful substances while providing better energy efficiency and drying quality. Such types of processes can considerably improve the performance of timber in several aspects. The treatment is usually achieved at temperatures between 120 °C and 260 °C, depending on the industrial process and desired end-product characteristics.
  • 679
  • 19 Oct 2021
Topic Review
Phase Change Materials for Thermal Regulative Wood-Based Products
Wood is an excellent building material or component that has been used all over the world. The rise in energy consumption worldwide, particularly in the building sector, has led to the development of diverse methods to overcome this problem. Embedding phase change material, phase change material (PCM), into the wood has been researched as one of the most effective alternatives of controlling the thermal loads of wood, as it can store and release latent heat energy at a specific temperature range.
  • 674
  • 12 Oct 2022
Topic Review
Opportunities of Bio-Based Adhesives for Packaging Applications
Global economy depends on fossil resources, which provide raw materials for the production of a range of chemicals and materials for the manufacture of commercial products such as paper and packaging. Since there is growing environmental awareness and the need to reduce dependence on petroleum-based products, the attention has been paid to the possibilities of synthesizing polymeric materials from bio-based renewable resources. The paper and packaging segment dominates the market and is expected to grow further during the forecast period due to robust growth in demand for packaging materials from food and beverage manufacturers and e-retail companies. In the paper industry, biomass, such as wood and other species, is undergoing constant change due to countries' efforts to decarbonize, the rise of bio-based materials, and so on. The recent shortage of paper for various media, due to the shift from fiber to packaging applications, opens the space for alternative solutions. Recently, interest in the use of agricultural residues has increased. Environmentally friendly packaging, so called green packaging, based on biodegradable, recyclable or compostable materials, is currently attracting a great deal of attention in many disciplines because of its unique properties compared to traditional petrochemical-based plastics. Green packaging materials play an important role in preserving and protecting the product. To fulfil these benefits, the bio-based material for green packaging should be made from materials that enhance the biopolymer properties of the packaging material and meet the requirements of the global market. In addition, to ensure the recyclability or biodegradability of the above packaging, bio-based adhesives should be included in the packaging process. Lately, the adhesive production is still based on by-products of petroleum processing and with increasing concerns about environmental threats and sustainable development, the use of biomass and bio-based materials will play an important role.
  • 597
  • 30 Mar 2023
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