Abstract
The influence of the process of delignification of bamboo fibers on the physical and mechanical properties of panels made with Guadua fibers and a plant polyurethane was studied. The modification of the fiber surfaces was carried out by means of a chemical method and a physical one. The chemical method consisted of the application of an alkaline treatment, varying the concentrations of sodium hydroxide (10% and 20%). The physical method consisted of a treatment with methane cold plasma. Manual molding and compaction by the pressing method was used for the construction of the panels. The physical properties of the composites were evaluated by the determination of their relative density, effective absorption, and percentage of swelling. In order to evaluate the mechanical properties, tensile, compression, and three-point static bending tests were performed. Panels made with fibers treated with methane cold plasma exhibited a notable reduction in the effective absorption capacity, greater dimensional stability, and better mechanical performance.
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