3D‐Printed Inherently Porous Structures with Tetrahedral Lattice Architecture: Experimental and Computational Study of Their Mechanical Behavior

Increasing demand in automotive, construction, and medical industries for materials with reduced weight high mechanical durability has given rise to porous composites. Materials combining nano- microporosity a well-defined cellular macroporous architecture offer great potential reduction while maintaining durability. To achieve predictable performance, it is essential apply experimental computational efforts precisely describe material structure–properties relationships. This study explores polymer structures polymerization-inherited porosity geometry, fabricated via digital light processing (DLP) 3Dprinting. Pore size relative density are varied by ink composition printing parameters track their influence on the structure stiffness. Simulated stiffness values base correspond experimentally determined elastic properties, showing Young's moduli of 554–722 MPa depending cosolvent ratio, which confirms relationship. Macroporosity introduced form 3D tetrahedral bending-dominated resulting specific 79.5 cm3 g−1, comparable foams. merge gap stiffnesses, further investigation structure–property relationships various 3D–printed lattice architectures, as well its application other stereolithography methods eliminate negative effects from artifacts resolution limit DLP 3D-printing, envisioned.