Bio-based barrier coatings for cellulose packaging
A scalable, bio-derived coating system enhances cellulose packaging's barrier properties, achieving an OTR of <1. Using surface activation and layered applications, it improves moisture resistance, antimicrobial function, and sustainability, offering a viable alternative to plastic packaging.
Overview
This innovative solution focuses on enhancing the barrier properties of cellulose-based packaging through bio-derived, multifunctional coatings. By achieving an Oxygen Transmission Rate (OTR) of less than 1, it provides a sustainable alternative to traditional plastic packaging. The coating system utilizes surface activation techniques, such as plasma treatment, to improve adhesion, particularly on dry-formed pulp. This results in packaging that is not only biodegradable but also extends product shelf life through improved moisture and oxygen resistance.
Technical specifications
- Layered Coating System: Utilizes cellulose nanocrystals (CNCs) for structural strength and oxygen barriers, biopolymers like chitosan for antimicrobial properties, and hydrophobic waxes for moisture resistance.
- Surface Activation: Plasma treatment enhances coating adhesion.
- Scalable Application Methods: Includes spray, dip, and roll coating to tailor deposition based on pulp morphology.
- Testing and Validation: Crosslinking, oxygen transmission rate (OTR), water vapor transmission rate (WVTR), and mechanical analysis ensure performance and sustainability.
Technology readiness level
Currently at Technology Readiness Level 4, this solution has been validated through lab testing and is progressing towards industrial application.
About Cleveland State University
Cleveland State University is a comprehensive urban public research university anchored in downtown Cleveland, serving a diverse student body and emphasizing applied, industry-connected scholarship. The city-centered campus offers shared labs and prototyping facilities and streamlined sponsored research agreements for rapid collaboration. Co-op and internship pipelines, plus proximity to Northeast Ohio's healthcare and advanced manufacturing anchors, give companies efficient access to talent and translational capacity. Research is supported by competitive federal funding from the National Science Foundation and National Institutes of Health, with additional support from the Department of Energy, the State of Ohio, and industry partners; a dedicated technology transfer office advances IP, licensing, and startup formation.
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