| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Society for Biomaterials: Biological Response to Materials and Material’s Response to Biological Environments
|
| Presentation Title |
Silicone-aided Advanced Additive Manufacturing of Glass and Glass-ceramic Scaffolds |
| Author(s) |
Enrico Bernardo, Hamada Elsayed, Jozef Kraxner, Franco Mathias Stabile |
| On-Site Speaker (Planned) |
Enrico Bernardo |
| Abstract Scope |
Silicone resins are attractive both as precursors of silicate bioceramics and as feedstock for additive manufacturing technologies, including stereolithography. The two aspects may be successfully combined operating with simple silicone-based blends, consisting of a silicone polymer mixed with photocurable acrylates. A first case study concerns the manufacturing of scaffolds with a composition resembling well-established Biosilicate® glass-ceramics. The technology enables the obtainment of novel carbon-containing composites, according to the transformation of silicone into silica (reacting with oxide fillers) and pyrolytic carbon. Such carbon phase is present in a matrix resembling 70S30C (70% SiO2 and 30% CaO) bioglass, described in a second case study. A quasi-molecular Ca2+ distribution is achieved by using novel photocurable emulsions, corresponding to droplets of aqueous solution of calcium salt in silicone/acrylates blends. Low temperature firing (700 °C) prevents crystallization. Pyrolytic C is intended to provide extrafunctionalities, such as enhanced absorption of IR light, useful for disinfection purposes. |