Invention Reference Number
Traditional thermosetting polymers are widely used due to their excellent stability and mechanical performance. However, these materials are typically derived from non-renewable petrochemical sources and are difficult to recycle, often ending up in landfills or incinerated. This has prompted a shift toward developing recyclable materials that align with sustainable practices and support the circular economy.
Description
The disclosed technology is a novel polymer composition that combines epoxy-anhydride crosslinked polymers with hydroxy-containing solid fillers to create a material that behaves as a reinforced thermoset at temperatures below a specific threshold (typically 100°C to 200°C), and transitions to a thermoplastic behavior at higher temperatures. This transition is facilitated through dynamic covalent bonds that enable the polymer to be reprocessed, reshaped, and recycled without significant loss of mechanical integrity or performance.
Benefits
- Recyclability and reprocessability: The polymer can be repeatedly processed and molded, reducing waste and enabling more sustainable manufacturing cycles.
- High performance: Maintains excellent mechanical properties typical of thermosets, such as high stiffness and structural integrity, while being adjustable through thermal processing.
- Versatility in applications: Suitable for use with a variety of fillers, including sustainable options like spent coffee grounds, lignocellulosic waste, and natural fibers, which enhances the environmental friendliness of the material.
Applications and Industries
- Automotive and aerospace: Components that require high performance materials with the potential for end-of-life recycling.
- Consumer electronics: Casings and structural components where durability and the possibility of recycling are valued.
- Construction: Adhesives, coatings, and sealants that benefit from strong mechanical properties and reworkability.
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.
