Cellulose-lignin nanocomposite barrier coating for sustainable packaging
Innovative cellulose-lignin nanocomposite coating utilizes biopolymers for enhanced barrier properties in beverage packaging. The sprayable, biodegradable coating offers improved resistance to water vapor and oxygen, enhancing sustainability in packaging solutions.
Overview
The cellulose-lignin nanocomposite barrier coating represents a groundbreaking advancement in sustainable packaging solutions. By leveraging the natural properties of cellulose and lignin, this technology provides an eco-friendly alternative to traditional barrier coatings. The coating is designed to effectively protect against water vapor and oxygen, making it ideal for beverage packaging applications. The sprayable formulation ensures ease of application, while its biodegradability aligns with increasing environmental standards.
Technical specifications
Key features:
- Utilizes nanocellulose, synthesized from industry bleached pulp, to form dense coating networks with low permeability.
- Incorporates lignin nanoparticles (LNPs) for enhanced water resistance and densification.
- Formulations can be optimized by varying the concentration ratios of nanocellulose and LNPs.
- Demonstrates improved barrier performance against water vapor and oxygen due to the hydrophobicity and high aspect ratio of components.
- Validated through rigorous testing, including OTR, WVTR, and biodegradability assessments per ASTM standards.
Technology readiness level
The development is currently at Technology Readiness Level 5, indicating that the technology has been validated in a laboratory environment. Future plans include further testing and optimization in industry-relevant settings to ensure readiness for commercial deployment.
About University of Tennessee, Knoxville
The University of Tennessee, Knoxville is a comprehensive public land‑grant research university—the flagship of the UT System—classified as R1 and serving more than 40,000 students. Industry engagement is anchored by the UT Research Park at Cherokee Farm, where corporate R&D and joint university–national lab facilities sit just across the river from campus, including assets such as the Volkswagen Innovation Hub and an AT&T 5G testbed. UT’s long‑standing partnership with Oak Ridge National Laboratory—via UT‑Battelle and the UT–Oak Ridge Innovation Institute—gives companies streamlined access to national lab capabilities, talent, and joint programs. A statewide Extension network and established co‑op programs connect companies to faculty expertise and student talent across Tennessee and into federal labs. Research is supported by competitive federal sponsors such as the National Science Foundation and the U.S. Department of Energy. Commercialization is managed by the University of Tennessee Research Foundation, which handles IP, licensing, and startup formation.
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