Journal
DRVNA INDUSTRIJA
Volume 72, Issue 3, Pages 279-289Publisher
ZAGREB UNIV, FAC FORESTRY
DOI: 10.5552/drvind.2021.2029
Keywords
plywood; melamine-ureaformaldehyde adhesive; nanocellulose; filler
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The study found that adding an appropriate amount of nanocellulose during plywood manufacturing can improve the properties of the plywood. However, a higher concentration of NCC can lead to a deterioration in the properties of the manufactured plywood.
The possibility of using nanocellulose (NCC) as a filling substance for melamine-urea-formalde-hyde (MUF) adhesive was investigated for the process of manufacturing plywood. The adhesive mixtures were prepared with various nanocellulose concentrations. The amount of introduced filler had a significant effect on both resin and plywood characteristics. Fourier transform infrared spectroscopy (MR) did not show any major changes between experimental and reference variants. The viscosity of resin increased after the introduction of nanocellulose. The addition of NCC in the amount of 5 g and 10 g per 100 g of solid resin led to an improvement in bonding quality, modulus of elasticity and bending strength. Further increase of NCC concentration caused a deterioration of manufactured plywood properties. In summary, the addition of proper amount of nanocellulose resulted in manufacturing plywood with improved properties.
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