Novel 3D Wollastonite-Based Scaffolds from Preceramic Polymers Containing Micro- and Nano-Sized Reactive Particles

Authors


  • The authors thank Chiara Bergo and Cesare Somaglia for the experimental assistance. E. Bernardo and P. Colombo acknowledge the financial support of Italy–Germany bilateral research program “Vigoni”.

  • This paper was amended in issue 4 of Advanced Engineering Materials because of a change in the affiliations.

Abstract

Wollastonite (CaSiO3) ceramics are well known biomaterials which can be produced using many different techniques. The present paper illustrates an innovative processing method employing preceramic polymers (silicone resins) containing CaCO3 micro- and nano-sized particles, which act as reactive fillers. Silica from the decomposition of the silicone resins reacts at low temperature with the CaO deriving from the fillers, yielding wollastonite ceramics. Hydroxyapatite powders can also be added, to modify the biological response of the material. This approach enables the fabrication of 3D scaffolds via fused deposition or via conventional hot extrusion.

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