Mechanically resilient 3D lattices with soft-hard bicontinuous nanostructures via phase-separated interpenetrating composites.

ABSTRACT: Achieving simultaneously high strength and toughness in lightweight architected materials remains a fundamental challenge because of the inherent tradeoff between these properties. Herein, we propose a novel strategy for fabricating robust 3D lattice structures by integrating photopolymerization-induced phase separation with the formation of an interpenetrating phase composite (IPC). This approach enables the creation of bicontinuous nanostructures composed of a soft acrylate phase and a hard epoxy phase, which are uniformly distributed within a porous lattice fabricated via digital light processing 3D printing. The resulting soft-hard interface microstructures exhibit remarkable mechanical enhancements. Compared with those of solid structures with the same geometry, the compressive stiffn

SUBMITTER: Jang NY 

PROVIDER: S-EPMC12615649 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature