|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||2016 Technical Division Student Poster Competition
||SPU-11: Biomimetic Narce Composite Synthesis
||Michael Sabatini, Olivia Yalnizyan-Carson
|On-Site Speaker (Planned)
Nacre is a strong natural composite characteristic to mollusk shells. Our project aims to artificially synthesize the lamellar structure of alternating calcium carbonate crystals and organic polymers in nacre via vapour deposition and spin coating. The initial approach to mimicking the composite is via synthesis of a stable amorphous inorganic phase using an ammonium carbonate diffusion process. Poly aspartic acid, magnesium, and sodium silicate additives are being explored to stabilize the amorphous phase during synthesis and coating. Subsequently, poly vinyl alcohol is spin coated on the amorphous inorganic deposition. Once several bilayers are established, controlled crystallization of the composite can yield a similar structure to nacre.
Scanning Electron Microscopy, Fourier Transmission Electron Microscopy, and X-Ray Diffraction are used to confirm the success of both a stable amorphous inorganic phase and final crystalized form. Upon successful composite synthesis, the strength of the composite is evaluated via nanoindentation.
||Definite: None Selected