Boosting Conductive Bioplastic Applications with SpyCatcher-SpyTag Technology and Cellulose Scaffolds

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Biotechnology

Background:

• Conventional plastics pose environmental challenges.
• Bioplastics offer sustainable alternatives.
• Developing conductive bioplastics expands their functional applications.

Purpose of the Study:

• To engineer a novel conductive bioplastic material.
• To enhance the electrical conductivity and stability of bioplastics.
• To explore applications in sustainable electronic devices.

Main Methods:

• Recombination of SpyCatcher-SpyTag system with leghemoglobin (GmLegC2) to create functional proteins.
• Assembly of proteins into a conductive polymer.
• Fusion of engineered protein with carbohydrate-binding module and integration into bacterial cellulose scaffolds.

Main Results:

• The resulting protein-hemin mixture showed 2.5x higher conductivity than free hemin.
• The composite material integrated into bacterial cellulose scaffolds exhibited a 141-fold increase in conductivity.
• The composite demonstrated uniform and stable electrical performance.

Conclusions:

• Developed an eco-friendly conductive bioplastic with significantly enhanced conductivity and stability.
• The material shows great potential for wearable sensors, electronic devices, and sustainable conductive materials.
• This work contributes to advancing sustainable materials for next-generation electronics.