Stronger when wet: Aquatically robust chitinous objects via zero-waste coordination with metal ions

Area of Science:

• Materials Science
• Biomaterials Engineering
• Sustainable Chemistry

Background:

• Synthetic materials offer durability but persist in ecosystems.
• Bio-based materials often lack water stability and durability.
• Biological structures utilize environmental interactions for mechanical properties and biodegradability.

Purpose of the Study:

• To create a biodegradable biomaterial with enhanced durability and water stability.
• To mimic natural strategies for achieving mechanical robustness using environmental water.
• To develop an alternative to persistent synthetic materials using renewable resources.

Main Methods:

• Vitrification of chitosan with nickel traces to form a dynamic network.
• Utilizing environmental water to create intermolecular bonds for material strengthening.
• Manufacturing biodegradable consumables and large objects from the novel biomaterial.

Main Results:

• A biomaterial that increases strength and water resistance when wet was successfully produced.
• The process avoids harsh organic solvents, preserving chitosan's biodegradability.
• Demonstrated application in creating robust, biodegradable products.

Conclusions:

• This approach offers a sustainable pathway to durable, water-stable biomaterials.
• The biomaterial leverages environmental water for enhanced properties, inspired by nature.
• Provides a viable, eco-friendly alternative for various applications, utilizing abundant renewable resources.