Evaluation of Environmentally Friendly Plywood Made Using Glutaraldehyde-Modified Starch as the Binder

A standard resin system used in wood-based panel preparation was formaldehyde-based glue, which believed to have fatal effects on the environment and human health due release of free formaldehyde. Therefore, study's objective evaluate physical mechanical properties experimental plywood made using glutardialdehyde-modified starch as an environmentally friendly binder. Two gelatinization methods were used: sodium hydroxide (NaOH) hot water. Plywood manufactured modified with 10, 20, 30% glutardialdehyde. The testing revealed that density value around 0.34 0.38 g/cm3, moisture content ranged between 19.34 23.67%, water absorption 24.56 71.60%, thickness swelling 1.18 7.27%. It found NaOH-gelatinized binder has higher lower content, are advantages for this composite type. In testing, it glutardialdehyde overall strength than water-gelatinized binder, measured by their bending tensile shear strength. MOR values range from 124.88 179.32 N/mm2, MOE 8027.50 10603.90 651.64 1385.16 N/mm2. highest glutardialdehyde: ratio, is based weight starch, showed better properties. results could be alternative manufacturing.