The use of urea–formaldehyde (UF) resins with lower contents of free formaldehyde in the board industry has led to products with
very low emissions of formaldehyde. This study gives a detailed account of the influence on the mechanical and physical properties of the
particleboard using UF resins with different mole ratios of formaldehyde:urea within the range 0.97–1.27. The mole ratio influenced not