The aim of this project is creating new bioinspired materials, through the design, synthesis and characterization of hierarchically structured composites. Such materials consist of hard (ceramic) and soft phases (polymers and organic ligands).
Pre-structured functionalized nanoparticles received from projects A1 and A2 are assembled into a material of progressively higher hierarchical levels. The processing steps involve self-assembly, additive manufacturing (in collaboration with project C4), polymer infiltration, nano-spray drying and hot-pressing (with projects A2 and A3). The objective for the highest hierarchical level is an anisotropic brick-and-mortar structure, analogous to the one characterizing nacre and other exceptionally strong and tough natural materials. The composites, as well as their individual hierarchical levels, will be characterized both structurally (in collaboration with projects A7, A8, Z2 and Z3) and mechanically (in collaboration with projects A5, Z2 and Z3), from the nano- to the macro-scale.
The key scientific question to be addressed concerns the role played by each building unit, at the different length scales, in the material’s macroscopic features. To do so, it is imperative to determine which properties and arrangements of the building units (polymeric, ceramic and nanocomposite particles) are necessary and sufficient to attain the desired mechanical and multifunctional characteristics in the final bulk material. Gaining this knowledge will ultimately lead to the tailored design of novel nanocomposites.
Prof. Dr. Diletta Giuntini,
Prof. Dr. rer. nat. Gerold
2. S. Behr et al.: Shear strength and interfacial toughness characterization of sapphire-epoxy interfaces for nacre-inspired composites. ACS Applied Materials & Interfaces 8(40), 27322-27331, 2016
3. S. Behr et al.: Large-scale parallel alignment of platelet-shaped particles through gravitational sedimentation. Scientific Reports. 5, 9984, 2015 - with Z2
... and more on the list of publications.