| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biodegradable Materials for Medical Applications II
|
| Presentation Title |
B-1: Bilayer Coated Magnesium Weaves as Degradable Bio-scaffolds |
| Author(s) |
Ju Xue, Cristina Romany, Bowen Chen, Lawrence Langan, James Guest, Timothy Weihs |
| On-Site Speaker (Planned) |
Ju Xue |
| Abstract Scope |
This study presents bio-degradable scaffolds that are 3D woven with magnesium (Mg) alloy wires and are coated with hydroxyapatite (HAp) and polycaprolactone (PCL) to improve bioactivity and structural integrity. The Mg wires have diameters of 200μm and 300μm and were woven into parts using a 3D weaving machine. The weaves were then electrochemically coated with HAp using an aqueous solution containing Ca(NO3)2 · 4H2O, NH4H2PO4 and NaNO3. The HAp coated weaves were then dipped into a PCL/ dichloromethane (DCM) solution using a custom-built dip coater. The concentration of the solution and the dip coating parameters were optimized to obtain a homogeneous, crack-free adhesive coating. The stiffness of the weaves were measured at each stage during the processes to evaluate the influence of each coating on structural integrity. The surface morphologies, phases, and thicknesses of the bilayer coatings were characterized with SEM/EDS, XRD, Raman spectroscopy and micro-CT. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |