Biodegradable and compostable circular polyester resembling polyethylene
Introducing PHPD, a biodegradable biopolyester that mimics polyethylene's properties while offering eco-friendly benefits. Made using a solvent-free polymerization method, PHPD is ideal for sustainable applications in injection molding.
Overview
Poly-15-hydroxypentadecanoate (PHPD) is a groundbreaking biopolyester that offers the benefits of polyethylene (PE) with added sustainability. Developed through a solvent-free, catalytic ring-opening polymerization method, PHPD is both biodegradable and compostable, addressing the growing demand for eco-friendly materials. Its structural similarity to PE allows it to maintain comparable molecular, thermal, rheological, and mechanical properties, making it suitable for various applications without compromising performance.
Technical specifications
- Biopolyester Composition: PHPD is synthesized from 15-pentadecanolide (15-PDL), a bio-renewable and FDA-approved macrolide.
- Sustainability: PHPD can be depolymerized and recycled back to its monomer, closing the production loop.
- Biodegradability: Demonstrated to degrade under freshwater, soil, and industrial composting conditions.
- Applications: Suitable for injection molding, with plans to produce and test multiple-kilogram samples.
- Performance: Outperforms commodity polyethylene and other biopolymers in various properties.
Technology readiness level
PHPD is currently at Technology Readiness Level 5. The technology has been validated in a lab environment, and efforts are underway to scale up production and conduct further application tests in injection molding.
About Colorado State University
Colorado State University is a comprehensive public land‑grant research university with an applied, partnership‑driven culture. Multiple research campuses—including the Fort Collins main campus, a public‑facing Denver site, and a foothills research complex with shared core facilities and pilot‑scale testbeds—enable companies to co‑locate, access instrumentation, and run validation studies. A statewide Extension network and proximity to the Front Range innovation corridor provide streamlined engagement with regional and national industry, while an integrated veterinary teaching hospital supports translational studies. Research is supported by competitive federal funding from agencies such as NSF, NIH, USDA, DOE, and DoD. A dedicated technology transfer office streamlines IP, contracting, and startup formation, with incubator and collaboration space for industry partners.
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