Knowledge Tree
wood
Facts (12)
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A critical review of industrial fiber hemp anatomy, agronomic ... bioresources.cnr.ncsu.edu 5 facts
claimHemp comprises less than 1% of the total natural fiber used in the U.S. due to a lack of processing infrastructure and agronomic guidelines, as it competes against wood and related agro fibers.
claimEnzymatic treatment using pectinase and cellulase has improved the mechanical properties of composite materials made from hemp hurds, wood, and polypropylene.
referenceLi, X., Qiang, M., Yang, M., Morrell, J. J., and Zhang, N. (2021) demonstrated that combining fiber enzymatic pretreatments and coupling agents improves the physical and mechanical properties of hemp hurd/wood/polypropylene composites.
measurementIndustrial hemp has a lower water footprint than wood or cotton, using approximately 2,719 liters of water per kg of mass compared to approximately 10,000 liters per kg for cotton.
claimHemp has a shorter vegetative growth period compared to other crops used for similar raw materials, such as cotton and wood.
Recent breakthroughs in the valorization of lignocellulosic biomass ... pubs.rsc.org Jun 7, 2025 4 facts
claimYu et al. modified wood samples using carboxymethylated alkali lignin, phytic acid, and melamine-urea-glyoxal resin to enhance fire resistance properties.
measurementWood modified by Yu et al. with lignin, phytic acid, and melamine-urea-glyoxal resin demonstrated a 56.8% reduction in heat release, a 92.3% decrease in smoke generation, and an improvement in Limiting Oxygen Index (LOI) from 23.6% in natural wood to 41.5% in the modified sample.
claimThe fire-extinguishing mechanism of wood modified by Yu et al. with lignin, phytic acid, and melamine-urea-glyoxal resin involves a synergistic gas and solid phase process: the lignin generates a dense char layer acting as a physical barrier, while the gas phase involves the release of CO2 and nitrogen/phosphorus-containing gases that dilute oxygen and inhibit combustion chain reactions.
referenceYu et al. (2024) published a study in Chemical Engineering Journal titled 'Modification with Lignin-Based N-P Flame Retardant to Improve the Flame Retardancy and Smoke Suppression of Wood' (DOI: 10.1016/j.cej.2024.152827).
What Are the Key Macroeconomic Indicators? | IG International ig.com 1 fact
claimAn economy-wide increase in demand for commodities like wood, iron, and oil is a sign of economic growth.
Sustainable Energy Transition for Renewable and Low Carbon Grid ... frontiersin.org Mar 23, 2022 1 fact
measurementApproximately one-third of wood used globally is unsustainably harvested and consumed.
Food Consumption Changes in The Ruler Tribal Community bioresscientia.com Feb 15, 2025 1 fact
claimTraditional cooking methods using wood, charcoal, and biomass remain dominant in many tribal communities due to cultural practices, cost, and infrastructure limitations.