Compostable polymer foams with tunable biodegradation rates
Novel class of compostable polymers and insulating foams designed for sustainable end-of-life performance. Base polymer achieves 98.5% microbial digestion versus cellulose control in ~25 days under industrial composting conditions (ASTM D5338). Current foam formulations reach 84.3% biodegradation in 180 days, with ongoing chemistry optimization targeting 90% by day 180.
Overview
This offering presents a new class of compostable polymers and synthetic foams derived from them, developed to address the growing demand for sustainable materials that combine insulation and barrier properties with verified end-of-life compostability. The technology is particularly suited to packaging, shipping, and cold-chain applications where traditional expanded polystyrene (EPS) and other petroleum-based foams create persistent waste streams. By understanding polymer-structure relationships that govern compostability, the team has engineered materials that are microbially digestible under industrial composting conditions while maintaining the durability and performance characteristics needed for commercial use.
Technical specifications
Key features:
- Novel compostable polymer chemistry designed for microbial digestion under industrial composting conditions
- Synthetic foam formulations providing insulation and barrier properties suitable for packaging applications
- Base polymer achieves 98.5% biodegradation relative to cellulose control in approximately 25 days (ASTM D5338)
- Current foam formulations reach 84.3% biodegradation within 180 days under the same standard
- Respirometry-based methodology used to screen and tune chemical linkages for faster composting rates
- Ongoing chemistry optimization targeting 90% biodegradation by day 180
- Manufacturing scale-up planned to hundreds of kilograms of base resin
Analytical approach:
The team uses respirometry as the primary analytical tool, measuring CO2 formation from foam samples compared to controls. This allows systematic variation of chemical linkages to identify which chemistries accelerate or slow microbial digestion, enabling rational design of next-generation formulations.
Technology readiness level
The base polymer has been validated through respirometry experiments demonstrating rapid microbial digestion comparable to cellulose under industrial composting conditions (ASTM D5338). Foam formulations have been produced and tested, showing 84.3% biodegradation over 180 days. Future work includes screening chemistries to achieve 90% biodegradation by day 180, scaling manufacturing capacity to hundreds of kilograms of base resin, and piloting full production-sale-use-collection cycles through established industry and municipal partnerships. The materials are not yet FDA approved for food contact, though the team anticipates future approval. The technology is positioned between laboratory validation and pilot-scale demonstration, with active pathways toward commercial scale-up and field deployment.
About University of Georgia
The University of Georgia is a comprehensive public land‑grant research university serving a large student body across multiple campuses, known for applied scholarship and community partnership. Industry partners access core facilities and pilot‑scale capabilities—including the Food Product Innovation and Commercialization Center—for prototyping, scale‑up, and product validation. A downtown Innovation District and a statewide Cooperative Extension network link campus expertise to companies across Georgia, while proximity to Atlanta’s corporate and logistics hubs lowers barriers to engagement. Research is supported by competitive federal funding from agencies such as NIH, NSF, USDA, and DOE. A dedicated technology transfer office provides IP services, licensing, startup support, and incubator space to accelerate commercialization.
delivered to your inbox.