Polyalkenamers as Drop-in Additives for Polymer Synthesis

This invention introduces an innovative method for upcycling waste polyalkenamers, such as polybutadiene and acrylonitrile butadiene styrene, into high-performance materials through ring-opening metathesis polymerization (ROMP). This approach addresses the pressing environmental challenges of plastic waste while enhancing the properties of new materials, making it an alternative to traditional recycling. 

Description

This innovative method focuses on upcycling waste polyalkenamers, such as polybutadiene and acrylonitrile butadiene styrene, by using them as drop-in additives during ROMP. The waste materials function as chain-transfer agents, enabling precise control over the molecular weight and architecture of the resulting polymers, which can be customized for specific performance requirements. The new polymers inherit beneficial properties like high elasticity and toughness from the waste materials, enhancing their applicability in demanding industries. Operating under mild conditions, often at room temperature, this process significantly reduces energy consumption compared to traditional methods. Additionally, it requires minimal preprocessing, allowing crude waste materials—such as tire scraps—to be used directly. The method's versatility makes it an effective solution for managing diverse plastic waste streams.

Benefits

• Efficient upcycling: Converts waste polyalkenamers into high-value materials while preserving their molecular integrity, avoiding the issues of molecular degradation common in traditional recycling.
• Low catalyst requirement: The process is highly efficient, requiring minimal catalyst amounts, which lowers operational costs.
• Direct use of waste: By minimizing preprocessing, the method allows for the direct use of a wider variety of waste materials.

Applications and Industries

• Packaging materials: Development of durable, recyclable plastics for various packaging needs, contributing to waste reduction in the packaging sector.
• Automotive components: Creation of tough and flexible materials for automotive parts, improving performance in vehicle manufacturing.
• Consumer goods: Production of resilient products for the consumer market.

Contact

To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.