Optimization of 3D printing parameters for recycled polybutylene succinate (PBS) using a granule-based 3D printer

In recent years, the use of recycled materials in 3D printing has gained significant attention due to its potential for sustainability and cost-effectiveness. This study opens the possibility of exploring bio-based recycled materials for additive manufacturing, and for the first time, investigates the use of recycled polybutylene succinate (PBS) for 3D printing applications. Particular attention was devoted to optimizing the mechanical properties by varying the printing speed and raster angles. Recycled PBS has proven to be a valuable polymer, allowing for excellent mechanical properties through optimized processing parameters. Additionally, its rapid crystallization kinetics facilitate uniform final crystallinity across sequentially deposited layers. The synergistic application of mechanical, thermal and morphological characterization techniques provided comprehensive insights into the performance and applicability of recycled PBS, highlighting the critical influence of process parameter optimization on achieving optimal material properties. Finally, the use of a 3D printer that utilizes granules not only broadens the application of recycled materials in 3D printing, thereby enhancing the sustainability of the printed components, but also contributes to a reduction in the costs associated with filament production. • For the first time, recycled polybutylene succinate in 3D printing was investigated. • Recycled 3D-PBS reached excellent mechanical properties and thermal stability. • The study demonstrates the potential to promote the utilization of recycled PBS.