Advanced Additive Manufacturing of Sustainable Metal-Polymer Composites for Circular Economy and Smart Applications

Abstract

This study presents a comprehensive framework for the advanced multi-material additive manufacturing of sustainable metal-polymer composites, integrating circular economy principles throughout the design and fabrication process. Through experimental validation, we demonstrated the feasibility of utilizing bio- based polymers and recycled metal powders to create heterogeneous composites with enhanced mechanical and electrical properties. The robust interfacial bonding, optimized material loading, and promising recyclability and biodegradability profiles underscore the potential of these materials to contribute significantly to sustainable manufacturing practices. This interdisciplinary approach, bridging materials science, engineering, and environmental sustainability, offers a roadmap for developing next-generation functional materials that are not only high-performing but also environmentally benign and economically viable within a circular economy paradigm. Future work will further verify and explore advanced recycling technologies based on the current experiments.