|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Biological Materials Science Symposium
||Bioinspired Composites through Clathrates and Hydrates in Freeze Casting
||Steven Eric Naleway, Christopher F. Yu, Rachel Hsiong, Arijit Sengupta, Peter M. Iovine, John Hildebrand, Marc A. Meyers, Joanna McKittrick
|On-Site Speaker (Planned)
||Steven Eric Naleway
Ubiquitous throughout nature are two phase ductile-brittle composites (e.g. collagen-hydroxyapatite in bone, aragonite-chitin in abalone shell). This has given rise to a number of techniques to fabricate bioinspired composites consisting of brittle (e.g. ceramic) and ductile (e.g. polymeric, metallic, glassy) phases. A commonly employed technique is freeze casting, where a ceramic scaffold is templated by growing ice crystals, then can be infiltrated with a second phase. We present the tools, new to freeze casting, of clathrate hydrates and hydrophobic hydration (hydrates) that can be employed in order to control the microstructure of the freeze casting process. More importantly, two phase composites controlled by clathrates and hydrates are capable of providing mechanical properties in excess of a simple mixture of their constituents due to their complex hierarchical structuring. This provides for bioinspired structural materials that mimic the microstructure and properties of biological layered composites.
Financial support: Multi-University Research Initiative (AFOSR-FA9550-15-1-0009).
||Planned: Publication Outside of TMS (Indicate publication title and publisher if known.)