Field-assisted sintering of barium titanate and 45S5 bioactive glass for biomedical applications

Polley C, Riaz A, Lund H, Boccaccini AR, Seitz H (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Ceramics International Elsevier

DOI: 10.1016/j.ceramint.2024.07.107

Abstract

The development of electrically active biomaterials, which create electrical cues on demand to foster cellular stimulation, remains a challenge. Here, we utilized a Field-assisted sintering approach to densify barium titanate and 45S5 bioactive glass to create a piezoelectric and potentially bioactive composite. By using Field-assisted sintering, we aimed to fabricate dense piezoelectric specimens, preserving a low degree of crystallization of the bioactive glass to keep bioactivity as high as possible. Therefore, we have varied the compositions of the materials and processed them at different sintering temperatures. This enabled us to produce dense test specimens in the 94 %–98 % relative density range. The samples were successfully polarized, and piezoelectric charge constants d33 were determined for the composites. The content of bioactive glass and the sintering temperature influence the charge constant d33. It is in the range of 0.8–3.4 pC/N for the composites, approximately in the order of magnitude assigned to natural tissues such as bone. X-ray diffraction was used to analyze the composition of the processed samples and to investigate the influence of an additional thermal post-treatment. Altogether, we established a process window for field-assisted sintering, allowing the fabrication of a piezoelectric and potentially bioactive biomaterial for tissue engineering.

Authors with CRIS profile

Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Additional Organisation(s)

FAU Forschungszentrum Neue Wirkstoffe (FAU NeW)

Involved external institutions

Universität Rostock DE Germany (DE) Leibniz-Institut für Katalyse (LIKAT) / Leibniz Institute for Catalysis DE Germany (DE)

How to cite

APA:

Polley, C., Riaz, A., Lund, H., Boccaccini, A.R., & Seitz, H. (2024). Field-assisted sintering of barium titanate and 45S5 bioactive glass for biomedical applications. Ceramics International. https://doi.org/10.1016/j.ceramint.2024.07.107

MLA:

Polley, Christian, et al. "Field-assisted sintering of barium titanate and 45S5 bioactive glass for biomedical applications." Ceramics International (2024).

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