Sulfur-Rich Polymers: A Sustainable Material Platform for 4D-Printable and Recyclable Intelligent Soft Systems
발표자
김동균 (한국화학연구원)
연구책임자
김동균 (한국화학연구원)
공동저자
김동균 (한국화학연구원)
초록
내용
Sulfur-rich polymers (SRPs) represent a pivotal material class for sustainable manufacturing due to their unique dynamic properties. We report a 4D printing framework utilizing SRP composites derived from industrial waste elecmental sulfur. By incorporating magnetic fillers (Fe3O4 or CrO2) into poly(phenylene polysulfide) networks (PSNs), we achieved solvent-free hot-melt extrusion 3D printing of these composites, leveraged by dynamic S-S bond exchange and shear-thinning behavior. These printed structures facilitate modular assembly, programmable shape-morphing, and full recyclability. Notably, PSN-CrO2 composites enable NIR-triggered magnetic control through Curie transition-mediated demagnetization. We showcased this sulfur-rich platform via untethered soft robots with multi-responsive locomotion and intelligent stir bars for on-demand catalyst release. Our work establishes SRPs as a versatile, sustainable foundation for next-generation intelligent soft systems.