Zn 2+ -coordinated hierarchical dynamic crosslinking in phenolized lignin-based polyurethane elastomers: mechanical self-reinforcement and dynamic adaptability enhancement

Key Points

• The study aims to explore the effects of hierarchical dynamic crosslinking on the properties of lignin-based polyurethane elastomers.
• Developed elastomers using phenol-carbamate and Zn 2+ coordination bonds with hydrogen bonds.
• Assessed mechanical properties and reprocessability through experimental testing.
• Elastomers exhibited enhanced mechanical properties due to self-reinforcement.
• Dynamic adaptability was significantly improved through the incorporation of Zn 2+ coordination.