Selected properties of MDF boards bonded with various contents of recycled PLA foil bags

MDF boards used in furniture manufacturing contain toxic formaldehyde, which can seep into the air, soil, and water due to improper storage. Nowadays, new types of binders are being sought to replace formaldehyde-based adhesives, giving the fibreboards new properties such as biodegradability and non-toxicity. This elaboration presents the research results for MDF boards bonded with polylactide (PLA) obtained from biodegradable plastic bags. Samples were made from wood fibers and 1 mm PLA particle fraction. Six types of samples with different PLA contents were produced: 10, 12, 15, 20, 30, and 50 by weight. For each type of sample, properties such as modulus of rupture and modulus of elasticity; thickness swelling and water absorption after 2 h and 24 h, and density profile, were determined. Unfortunately, MDF boards made with PLA bag particles do not possess sufficient physical and mechanical properties to replace formaldehyde-based glue. However, they have potential for use in other applications, such as packaging.