COMPARATIVE STUDY ON PHYSICAL-MECHANICAL PROPERTIES OF PLYWOOD PRODUCED FROM EUCALYPTUS GRANDIS AND POPULUS DELTOIDS VENEERS

Nine-ply plywood panels were produced from Eucalyptus grandis and Populus deltoids using urea-formaldehyde (UF) and phenol-formaldehyde (PF) adhesives. The physical and mechanical properties, such as moisture content, density, modulus of rupture (MOR) and modulus of elasticity ( MOE) of the eucalyptus and poplar boards, were compared in this study. Samples were tested on both, along and across the grain. Higher values of MOR and MOE were observed for eucalyptus as compare to poplar. Density of ply board was observed as 500-560 kg.m(-3) in plywood from poplar and 700-720 kg.m(-3) in plywood from eucalyptus species. These differences were attributed to the variation in properties of veneer wood species. The effect of veneer wood species on some physical and mechanical properties of plywood was found statistically different.

Automated summary

This study compared the physical and mechanical properties of plywood panels made from Eucalyptus grandis and Populus deltoids. The eucalyptus plywood showed higher modulus of rupture and modulus of elasticity compared to poplar plywood.