Development of Suberinic Acids-Bonded Medium-Density Particleboard

Area of Science:

• Materials Science
• Sustainable Manufacturing
• Wood Composites

Background:

• Conventional particleboard production uses formaldehyde-based adhesives, posing health and environmental risks.
• Rising material costs and regulations necessitate sustainable alternatives for wood-based panels.
• Utilizing production residues like sawdust and recycled particleboards enhances resource efficiency.

Purpose of the Study:

• To develop eco-friendly particleboard using sawdust and a natural binder from birch bark.
• To evaluate the impact of processing parameters on particleboard properties.
• To assess the suitability of the developed particleboard for interior fitment applications.

Main Methods:

• Particleboard fabrication using sawdust from cellular wood materials and recycled boards.
• Binder formulation from a natural suberinic acids mixture derived from birch outer bark.
• Optimization of furnish structure, binder content (15-21%), pressing temperature (190-220 °C), pressing rate (0.9-1.7 min/mm), and board density (650-850 kg/m³).

Main Results:

• Particleboards met EN 312, Type P2 requirements for thickness swelling (≤17%) and internal bonding strength (≥0.40 N/mm²).
• Bending properties (MOE ≥ 1800 N/mm², MOR ≥ 11 N/mm²) approached target values, indicating potential for further enhancement.
• Furnish structure, board thickness, density, and pressing temperature significantly influenced final particleboard properties.

Conclusions:

• Sustainable particleboard production is feasible using sawdust and birch bark binder.
• The developed boards are suitable for interior fitment and furniture applications.
• Further optimization of processing parameters can improve mechanical properties for broader applications.