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

Kuzina, Maria A. A. 1; Kurpiers, Chantal M. M. 2; Tsai, Ya-Yun; Schwaiger, Ruth; Chang, Shu-Wei; Levkin, Pavel ORCID iD icon 3
1 Institut für Biologische und Chemische Systeme (IBCS), Karlsruher Institut für Technologie (KIT)
2 Institut für Angewandte Materialien – Werkstoff- und Grenzflächenmechanik (IAM-MMI), Karlsruher Institut für Technologie (KIT)
3 Institut für Organische Chemie (IOC), Karlsruher Institut für Technologie (KIT)


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

Verlagsausgabe §
DOI: 10.5445/IR/1000160127
Veröffentlicht am 04.07.2023
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien (IAM)
Institut für Biologische und Chemische Systeme (IBCS)
Institut für Organische Chemie (IOC)
Institut für Angewandte Materialien – Werkstoff- und Grenzflächenmechanik (IAM-MMI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 1438-7492, 1439-2054
KITopen-ID: 1000160127
HGF-Programm 43.31.01 (POF IV, LK 01) Multifunctionality Molecular Design & Material Architecture
Erschienen in Macromolecular Materials and Engineering
Verlag John Wiley and Sons
Band 308
Heft 9
Seiten Art.-Nr.: 2300041
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 19.06.2023
Schlagwörter 3D printed polymers, inherently porous polymers, tetrahedral lattices
Nachgewiesen in Web of Science
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