About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Next Generation Biomaterials
|
| Presentation Title |
Silicone-Based Emulsions for High Precision Manufacturing of Highly Porous Bioceramic Scaffolds |
| Author(s) |
Hamada Elsayed, Barbora Nikendey Holubová, Enrico Bernardo |
| On-Site Speaker (Planned) |
Enrico Bernardo |
| Abstract Scope |
Silicone polymers with oxide fillers are useful precursors for silicate bioceramics. They allow additive manufacturing of silicone-based inks, followed by direct heat treatment, to produce porous 3D scaffolds. This study presents new inks: biphasic mixtures of silicone polymer in photocurable acrylates and molten hydrated Ca and Na salts. These emulsion-like inks enable high-resolution stereolithography printing and bioglass matrices with pyrolytic carbon, treated in N2 at 700-800 °C. Formulation adjustments yield glass-ceramic scaffolds mimicking P-free Biosilicate (air treatment, 1100 °C) or oxynitride scaffolds based on CaSi2O2N2 (N2 treatment, 1400 °C). All conditions produce crack-free components, preserving printed topology and exhibiting excellent strength-to-density ratios. |