Recycling Particleboard by Acid Hydrolysis: Effects on the Physical, Thermal, and Chemical Characteristics of Recycled Wood Particles

• DOI: 10.20944/preprints202504.1538.v1
• Publication Date: 2025-04-22T00:22:03Z
• Authors: Gustavo E. Rodríguez; Rosilei Garcia; Alain Cloutier

Acid hydrolysis can be more efficient than water hydrolysis, particularly in breaking down cured adhesives found waste panels within a shorter reaction time that could benefit large-scale industrial processes. This study evaluates the effects of various acid conditions on thermal, physical, and chemical properties recycled particles intended for particleboard production. Particleboards were using oxalic ammonium chloride at different concentrations times 122 °C. The thermal stability was determined by thermogravimetric analysis. Particle size distribution, particle morphology, nitrogen content, pH acid/base buffer capacity analyzed. effect urea-formaldehyde (UF) curing assessed differential scanning calorimetry gel method. exhibited higher degradation beyond 200 °C, indicating their manufacturing new panels. treatments did not damage anatomical structure particles. content decreased up to 90% when used, compared raw board Recycled had lower pH, capacity, base those significantly affect peak polymerization temperature UF adhesive. However, some affected results indicate particleboards effectively through mainly with acid, which gives better alone. Oxalic showed increased selectivity eliminating adhesive, resulting suitable