Hemp-reinforced composite packaging with enhanced moisture barrier properties
Sustainable hemp-fiber-reinforced biopolymer packaging designed for food applications. Targets water vapor and oxygen transmission rates below industry specifications, achieving full biodegradability while maintaining product freshness and structural integrity.
Overview
This solution addresses the growing demand for sustainable, high-performance food packaging by combining natural hemp bast fibers with hydrophobic, food-safe biopolymers. The composite packaging is engineered to restrict moisture absorption and preserve food product integrity, targeting water vapor transmission rate (WVTR) and oxygen transmission rate (OTR) values below 0.3 to meet stringent food industry specifications. Beyond barrier performance, the material is fully biodegradable, supporting corporate sustainability commitments and reducing reliance on petroleum-based plastics.
Technical specifications
- Fiber reinforcement: Hemp bast fibers integrated with hydrophobic food-safe polymers to enhance mechanical strength and barrier performance
- Compatibilizer system: Optimized compatibilizer chemistry to improve fiber-polymer interphase bonding and dispersion within the matrix
- Processing method: Extrusion-based manufacturing with tunable shear rates and processing conditions for consistent fiber dispersion
- Barrier targets: WVTR and OTR values below 0.3, aligned with major food manufacturer specifications
- Mechanical performance: Tensile, flexural, and impact testing to validate structural durability under handling and storage conditions
- Biodegradability: Respirometric testing confirmed over 100% biodegradation, supporting compostability claims
- Additional benefits: Antibacterial properties observed in hemp-fiber composite formulations
Technology readiness level
The technology has been validated under laboratory conditions, corresponding to TRL 4. Key milestones completed include extrusion of PHB/hemp fiber composites, fiber dispersion and interphase analysis, barrier property assessment, mechanical testing, and biodegradability confirmation. Next steps involve optimizing large-scale production processes, ensuring regulatory compliance for food-contact materials, and collaborating with food industry partners for market introduction and pilot-scale feedback.
About Northern Illinois University
NIU is a comprehensive public research university headquartered in DeKalb with a multi‑campus footprint across the Chicago area. Through its Office of Innovation, companies have a single entry point to the university, with options to co‑locate via flexible office and lab leasing and engage faculty and student talent. Regional centers in Naperville, Hoffman Estates and Rockford connect partners to the suburban corporate base, supported by a university‑operated business incubator in Rockford. Research is supported by competitive federal funding and strengthened by collaborations with nearby national laboratories. A dedicated technology transfer office and a university‑affiliated research foundation provide IP management, licensing, sponsored research support and startup services.
Inquire about this partnering listing
Looking for
Industry applications
delivered to your inbox.