Video Experimental Relacionado
Updated: Jul 5, 2026
Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
Published on: November 30, 2020
Construcción de redes de polifenoles de metal y lignina y su aplicación en envases activos inteligentes a base de
Lirong Lu1, Jiatian Zhu1, Jingpeng Zhou2
1Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China.
Abstract:
Facing the urgent need for sustainable and functional food packaging, developing high-performance materials from natural polymers is crucial. Herein, we propose a green strategy inspired by crustacean exoskeletons to construct lignin-metal polyphenol networks (L-MPNs) via proton-based ionic liquid pretreatment and metal-ion coordination. This forms a stable 3D network utilizing lignin's phenolic hydroxyl groups, which significantly enhances antioxidant activity, achieves >99% UV shielding, and exhibits 92.5% DPPH radical scavenging capacity. Applied to paper packaging, Ferric-ion-coordinated lignin-metal polyphenol networks (FL-MPNs, 100 g/m2) impart excellent barrier and antioxidant properties alongside maintained mechanical strength, cutting water vapor transmission by ∼40%. In freshness tests, they reduced mass loss to 3.52% and pH change to 0.17, effectively inhibiting food deterioration. Thus, FL-MPNs advance lignin valorization for next-generation sustainable smart packaging to ensure safer, more stable food preservation.
