Mechanical improvement of calcium carbonate cements by: In situ HEMA polymerization during hardening

Journal article


Publication Details

Author(s): Myszka B, Hurle K, Zheng K, Wolf S, Boccaccini AR
Journal: Journal of Materials Chemistry B
Publication year: 2019
Volume: 7
Journal issue: 21
Pages range: 3403-3411
ISSN: 2050-750X
eISSN: 2050-7518


Abstract

Calcium carbonate cements are a promising alternative for calcium phosphate cements. Due to the higher solubility of calcium carbonate compared to apatite, it is expected to have an improved biodegradation rate; a clear advantage for prospective biomedical applications in a clinical context. As of yet, the poor mechanical performance of calcium carbonate cements precludes their exploitation as a bioceramic. Herein, we report a mechanically enhanced calcium carbonate cement, formulated of vaterite and magnesium-doped amorphous calcium carbonate, which was strengthened by in situ polymerization of incorporated 2-hydroxyethylmethacrylate (HEMA) during setting in simulated body fluid (SBF). This approach allowed us to generate a pronouncedly strengthened polymer-ceramic composite whose mechanical properties can be tuned by the monomer fraction. Varying cement compositions were characterized with respect to their mechanical performance, morphology, and quantitative phase composition. HEMA polymer reinforcement strengthened the calcium carbonate cement distinctly in four-point bending test while, in stark contrast, the brittleness of the polymer-free cement simply made such tests impossible. Our results demonstrate that the chosen polymer-enforcement strategy is an efficient and straightforward approach and allows for tuning the mechanical properties of an otherwise brittle and thus unusable calcium carbonate cement towards biomedical application.


FAU Authors / FAU Editors

Boccaccini, Aldo R. Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)
Hurle, Katrin Dr.
Lehrstuhl für Mineralogie
Myszka, Barbara
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)
Wolf, Stephan Prof. Dr.
Juniorprofessur für Werkstoffwissenschaften (Biomimetische Materialien und Prozesse)
Zheng, Kai Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)


How to cite

APA:
Myszka, B., Hurle, K., Zheng, K., Wolf, S., & Boccaccini, A.R. (2019). Mechanical improvement of calcium carbonate cements by: In situ HEMA polymerization during hardening. Journal of Materials Chemistry B, 7(21), 3403-3411. https://dx.doi.org/10.1039/c9tb00237e

MLA:
Myszka, Barbara, et al. "Mechanical improvement of calcium carbonate cements by: In situ HEMA polymerization during hardening." Journal of Materials Chemistry B 7.21 (2019): 3403-3411.

BibTeX: 

Last updated on 2019-27-06 at 10:18