| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
3D Printing of Biomaterials and Devices
|
| Presentation Title |
Advanced Bioactive 3D Scaffolds Based on Ca-Mg Silicate Glass Microspheres |
| Author(s) |
Jozef Kraxner, Mokhtar Mahmoud, Si Chen, Monika Michalkova, Martin Michalek, Enrico Bernardo, Dusan Galusek |
| On-Site Speaker (Planned) |
Jozef Kraxner |
| Abstract Scope |
Novel manufacturing techniques, such as additive manufacturing, also referred to as 3D printing, hold a critical role in preparing novel bioactive three-dimensional glass-ceramic scaffolds. The presented work reports on 3D scaffolds for medical applications by digital light processing using bioactive systems based on Ca–Mg silicate glass microspheres. The crystallization of the åkermanite system was prevented by introducing nearly fully crystallized precursor powders, prepared using conventional melt quenching, into an oxygen-methane flame. This process resulted in the production of solid glass microspheres with diameters less than 63 ìm. The spherical shape of particles allowed for a high solid content, up to 77 wt%, in the suspension. After the debinding process, rapid sintering at 950°C for 30 minutes produced scaffolds retaining the macro-porosity from the 3D printing model with well-densified struts. The crystallization of 3D scaffolds during the sintering process led to 3D structures with an adequate strength-to-density ratio. |