Isabell Biermann

Universitätsklinikum Würzburg

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Uwe Gbureck

Universitätsklinikum Würzburg

Aldo R. Boccaccını

Friedrich-Alexander-Universität Erlangen-Nürnberg

Kevin W. Becker

GEOMAR Helmholtz Centre for Ocean Research Kiel

Hui Zhu

Xi'an Jiaotong University

Jake E. Barralet

McGill University

F A Müller

Friedrich Schiller University Jena

Hana Kaňková

Trencianska Univerzita Alexandra Dubceka V Trencine

Susanne Heid

Friedrich-Alexander-Universität Erlangen-Nürnberg

Kirsten Wunder

University of Würzburg

Katharina Zorn

Friedrich Schiller University Jena

Cooperative Institutions

Friedrich-Alexander-Universität Erlangen-Nürnberg

University of Würzburg

Universitätsklinikum Würzburg

Bavarian Polymer Institute

John Wiley & Sons (United States)

Helmholtz Centre for Infection Research

University of Duisburg-Essen

McGill University

University of Birmingham

Friedrich Schiller University Jena

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Hydraulic setting Mg₃(PO₄)₂powders for 3D printing technology

Advances in Applied Ceramics Structural Functional and Bioceramics (2011)

Elke Vorndran Kirsten Wunder Claus Moseke Isabell Biermann F A Müller

AbstractThree-dimensional powder printing was used in this study to fabricate custom made magnesium phosphate based structures. In a first step, farringtonite [Mg3(PO4)2] powders were synthesised by sintering and subsequent grinding. Optimised powders suitable for printing were obtained after 60 min of grinding, which resulted in a medium particle size of 16 μm. These powders were reacted with binder liquids consisting of 2M K2HPO4, 0·5M (NH4)2HPO4 or 20%H3PO4 to form a matrix of either struvite-(K) (MgKPO4.6H2O), struvite (MgNH4PO4.6H2O) or newberyite (MgHPO4.3H2O) by a hydraulic setting reaction. While printing of struvite-(K) was not possible due to the long setting time of this cement system, both newberyite and struvite samples could be processed with good dimensional accuracy. Strength was initially low after printing, namely in the range of 1·3–2·8 MPa; however, additional post-hardening in the binders increased the compressive strength to a maximum of 10 MPa for struvite and 36 MPa for newberyite. This was accompanied by a higher degree of conversion to the setting products, as evidenced by X-ray diffraction analysis. Magnesium phosphate based structures prepared by three-dimensional printing may find an application as biodegradable bone substitutes or can be used for the rapid manufacturing of moulds for metal casting, as demonstrated in this study.

Struvite

Magnesium phosphate

10.1179/1743676111y.0000000030

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Citations (35)

Bioprinting with bioactive alginate dialdehyde-gelatin (ADA-GEL) composite bioinks: Time-dependent in-situ crosslinking via addition of calcium-silicate particles tunes in vitro stability of 3D bioprinted constructs

Bioprinting (2022)

Susanne Heid Kevin W. Becker Ji-Won Byun Isabell Biermann Zuzana Neščáková

Biofabrication

3D bioprinting

Gelatin

Calcium silicate