Chemical Resistance of Modified Wood Veneers in Sustainable\nLoad Bearing Elements

In the pursuit of sustainable engineering solutions,\nmaterial selection\nis increasingly directed toward resources that offer functional efficacy,\neconomic feasibility, and minimal environmental impact. To replace\nenvironmentally damaging materials like aluminum with more sustainable\nalternatives like wood-based materials, it is essential to improve\nthe durability and longevity of wood. This study explores the potential\nsuitability of modified veneers as an outer protective layer for unmodified\nwooden load-bearing elements, providing a cost-effective and resource-efficient\nalternative to bulk modification. Unmodified, acetylated, furfurylated,\nand physically densified birch rotary-cut wood veneers were exposed\nto liquid chemical reagents (acids, base, solvents, and water) and\ncharacterized thereafter in tensile tests. The chemical resistance\nwas evaluated based on the deterioration of tensile strength. Additionally,\ninfinite focus microscopy, infrared spectroscopy, and contact angle\nmeasurements were performed to track morphological and chemical changes\nin the veneers. The results demonstrated that acetylation and furfurylation\nsignificantly enhanced chemical resistance against the tested reagents.