Glass powders and reactive silicone binder: Interactions and application to additive manufacturing of bioactive glass-ceramic scaffolds |
| |
| Affiliation: | 1. Department of Industrial Engineering, Università degli Studi di Padova, Padova, Italy;2. Ceramics Department, National Research Centre, Cairo, Egypt;3. Centro de Tecnología de recursos Minerales y Cerámica (CETMIC), Gonnet (La Plata), Argentina;4. Department of Glass Processing, FunGlass, Alexander Dub?ek University of Tren?ín, Tren?ín, Slovakia;5. Joint glass centre of the IIC SAS, TnUAD, and FChFT STU, FunGlass, Alexander Dub?ek University of Tren?ín, Tren?ín, Slovakia |
| |
| Abstract: | A novel concept for the additive manufacturing of three-dimensional glass-ceramic scaffolds, to be used for tissue engineering applications, was based on fine glass powders mixed with a reactive binder, in the form of a commercial silicone. The powders consisted of ‘silica-defective glass’ specifically designed to react, upon firing in air, with the amorphous silica yielded by the binder. By silica incorporation, the glass was intended to reach the composition of an already known CaO Na2OB2O3SiO2 system. Silica from the binder provided up to 15 wt% of the total silica. With the same overall formulation, silicone-glass powder mixtures led to nearly the same phase assemblage formed by the reference system, crystallizing into wollastonite (CaSiO3) and Ca-borate (CaB2O4). Samples from silicone-glass powder mixtures exhibited an excellent shape retention after firing, which was later exploited in highly porous reticulated scaffolds, obtained by means of direct ink writing (DIW). |
| |
| Keywords: | 3D bioactive glass-ceramics scaffolds Polymer-derived ceramics Additive manufacturing Direct ink writing |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
