Composite Board Binder Systems from Rice Lignin

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2021-CARU-69444
Researchers at Purdue University have developed a formaldehyde-free resin binder for the manufacture of composite boards in order to meet the increasing demand for sustainably produced and environmentally friendly construction materials. The proposed resin binder leverages depolymerized lignin from forestry waste (rice or wood) to replace carcinogenic substances used in current industry-standard binders. These composites are commonly used in furniture, flooring, and countertops. As EU and US regulatory organizations seek to eliminate formaldehyde from home environments, this technology offers a compelling and sustainable alternative to traditional binder systems.

Advantages:
- Formaldehyde-free
- Repurposes waste materials
- Aligned with goals of regulatory organizations

Applications:
- Medium density fiber (MDF) board
- Kraft paper laminate composite manufacturing
- Outdoor furniture, façade elements, bathroom stalls

Technology Validation:
This technology has been validated through testing lab-built prototypes for water absorption and thickness swell, where the samples using 30% by weight extender resin were compliant with industry standards. A continuation of this work will involve the optimization of the percentages of the resin formulations.
Jan 31, 2022
Provisional-Patent
United States
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Purdue Office of Technology Commercialization
The Convergence Center
101 Foundry Drive, Suite 2500
West Lafayette, IN 47906

Phone: (765) 588-3475
Fax: (765) 463-3486
Email: otcip@prf.org