Effect of weathering on physical, mechanical and morphological properties of chemically modified wood materials

Natural weathering studies of oil palm trunk lumber (OPTL) green polymer composites enhanced with oil palm shell (OPS) nanoparticles

“…From this result, it is clear that the rate of weight loss is the function of time. It indicates that weathering occurs due to photo-degradation of lignin in the materials, and leaching of those degraded lignin fragments from the exposed sample surfaces (Bhat et al 2010b). The impregnated nanoparticles and PF resins also undergo the leaching process.…”

“…The exposed samples then attacked by the microbes, which also reduced the weight (Bhat et al 2010b). However, weathering varies with many factors like species of wood, density, and climatic conditions (amount of irradiation, rain action, wind) (Feist 1990;1983).…”

“…Several researchers have been proved that weathering reduced the mechanical properties (Bhat et al 2010b; Esteves et al 2008). They suggested that polymer degradation was mainly caused by chemical bond scission reactions in macro molecules.…”

“…The increase in the mechanical properties due to the chemical modification has been reported by several researchers. Bhat et al (2010b) found that the flexural properties was attributed to the reaction of hydroxyl groups of cell wall polymers with the anhydrides, converting them into acetyl groups.…”

Microcrystalline cellulose filled composites for wooden artwork consolidation: Application and physic-mechanical characterization

“…In fact, several studies reported in the open scientific literature are focused on the improvement of the durability of wood through chemical treatments [11][12][13][14]. Moreover, cellulose based fillers are certainly attracting scientific attention in the wood consolidation [15,16].…”