Elaboration and Characterization of Macroporous Bioceramics using Polymeric Sponge Replication Method

Kamel Chaari1,*, Jamel Bouaziz1, Khaled Bouzouita2

1Advanced Materials Laboratory, Department Materials Engineering and Industrial Management, National Engineering School of Sfax (ENIS), University of Sfax, Route Soukra Km 3.5 B.P. 1173, Sfax, 3038, Tunisia

2Department Physics and Chemistry, Preparatory Engineering Institute of Monastir (IPEIM), Rue Ibn Eljazzar, Monastir, 5019, Tunisia

Adv. Mater. Lett., 2020, 11 (11), 20111578

DOI: 10.5185/amlett.2020.111578

Publication Date (Web): Oct 19, 2020

E-mail: kamel.chaari@enis.tn

Abstract


Biomedical porous fluorapatite scaffolds were fabricated using an improved polymeric sponge replication method. The specific formulations and distinct processing techniques such as the mixture of water and dispersant (Sodium TriPolyPhosphate) as solvent, the multiple coatings with the desired viscosity of the Fap slurries were duplicated from Chaari et al. [11]. The heat treatment was conducted in two stages: a delicate stage of polymeric structure degradation at 290 0C and then at 600 0C followed by a sintering stage at 1000 0C for three hours. The obtained porous Fap scaffolds had uniform porous structures with completely interconnected macropores of 850 μm. In addition, micropores of 4 μm were formed in the skeleton of the scaffold. Finally, the porous Fap scaffold with a porosity of 65 vol.% and a surface of 400 mm2 had a compressive strength of 7 MPa.

Keywords

Biomaterials, macroporous materials, microstructure, mechanical properties.

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