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Housing

Sustainable Composite Boards Made from Agricultural Residues and Plastic Waste

Strategic Insights

— 1 min read

Researchers at Thammasat University in Thailand have investigated the production of composite boards using a mix of agricultural residues and plastic waste, aiming to reduce the use of formaldehyde adhesives. The study found that increasing the amount of plastic waste in the mix led to improved bending resistance and tensile strength, while also reducing density, water absorption, and thickness swelling. The composite boards met standards for architectural applications, providing a guideline for the use of waste materials in residential construction.

Key Takeaways:

  • The study used a mix of 55%, 60%, and 70% agricultural residues (rice straw and corn cob) and 45%, 40%, and 30% plastic waste (polypropylene and polyamide).
  • The composite boards were produced using heat compression at 190 degrees C and 220 degrees C for 12 minutes, yielding a density of 400-900 kg/m³.
  • Increasing the amount of plastic waste in the mix led to a decrease in density, water absorption, and thickness swelling, but an improvement in bending resistance and tensile strength.
  • The composite boards made with higher amounts of plastic waste had lower thermal conductivity.
  • The study concluded that the results provide guidelines for the use of waste materials to produce composite boards that meet standards for architectural applications.
  • The research was peer-reviewed and published in the Journal of Green Building.

Statistics:

  • 55%, 60%, and 70% of agricultural residues (rice straw and corn cob) were used in the composite boards.
  • 45%, 40%, and 30% of plastic waste (polypropylene and polyamide) were used in the composite boards.
  • The composite boards were produced using heat compression at 190 degrees C and 220 degrees C for 12 minutes.
  • The density of the composite boards ranged from 400-900 kg/m³.

Sources:

  • Utilizing Agricultural Residues and Plastic Waste In the Production of Composite Board for Residential Construction. Journal of Green Building, 2025;20(2):93-110.
  • Data on Agriculture Discussed by Researchers at Thammasat University (Utilizing Agricultural Residues and Plastic Waste In the Production of Composite Board for Residential Construction). Agriculture Week. June 12, 2025; p 575.

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