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Journal of Advanced Ceramics 2020, 9(3): 360-373 https://doi.org/10.1007/s40145-020-0375-8
Research Article | Open Access | Issue | Published: 05 June 2020

Additive manufacturing of hydroxyapatite bioceramic scaffolds: Dispersion, digital light processing, sintering, mechanical properties, and biocompatibility

Show Author's Information Chengwei FENGa,  Keqiang ZHANGa,  Rujie HEa( ),  Guojiao DINGa,  Min XIAb,  Xinxin JINc,  Chen XIEd( )
Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
Shanghai Aircraft Manufacturing Co., Ltd., Shanghai 201324, China
Keywords:
additive manufacturing, digital light processing, vat photopolymerization, hydroxyapatite, bioceramic scaffold
Cite this article:
FENG C, ZHANG K, HE R, et al. Additive manufacturing of hydroxyapatite bioceramic scaffolds: Dispersion, digital light processing, sintering, mechanical properties, and biocompatibility. Journal of Advanced Ceramics, 2020, 9(3): 360-373. https://doi.org/10.1007/s40145-020-0375-8
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Abstract Full text About this article

Hydroxyapatite (HA) bioceramic scaffolds were fabricated by using digital light processing (DLP) based additive manufacturing. Key issues on the HA bioceramic scaffolds, including dispersion, DLP fabrication, sintering, mechanical properties, and biocompatibility were discussed in detail. Firstly, the effects of dispersant dosage, solid loading, and sintering temperature were studied. The optimal dispersant dosage, solid loading, and sintering temperature were 2 wt%, 50 vol%, and 1250 ℃, respectively. Then, the mechanical properties and biocompatibility of the HA bioceramic scaffolds were investigated. The DLP-prepared porous HA bioceramic scaffold was found to exhibit excellent mechanical properties and degradation behavior. From this study, DLP technique shows good potential for manufacturing HA bioceramic scaffolds.


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About this article

Additive manufacturing of hydroxyapatite bioceramic scaffolds: Dispersion, digital light processing, sintering, mechanical properties, and biocompatibility

Show Author's information Chengwei FENGa, Keqiang ZHANGa, Rujie HEa( ), Guojiao DINGa, Min XIAb, Xinxin JINc, Chen XIEd( )
Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
Shanghai Aircraft Manufacturing Co., Ltd., Shanghai 201324, China

Abstract

Hydroxyapatite (HA) bioceramic scaffolds were fabricated by using digital light processing (DLP) based additive manufacturing. Key issues on the HA bioceramic scaffolds, including dispersion, DLP fabrication, sintering, mechanical properties, and biocompatibility were discussed in detail. Firstly, the effects of dispersant dosage, solid loading, and sintering temperature were studied. The optimal dispersant dosage, solid loading, and sintering temperature were 2 wt%, 50 vol%, and 1250 ℃, respectively. Then, the mechanical properties and biocompatibility of the HA bioceramic scaffolds were investigated. The DLP-prepared porous HA bioceramic scaffold was found to exhibit excellent mechanical properties and degradation behavior. From this study, DLP technique shows good potential for manufacturing HA bioceramic scaffolds.

Keywords: additive manufacturing, digital light processing, vat photopolymerization, hydroxyapatite, bioceramic scaffold

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Publication history
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Acknowledgements
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Publication history

Received: 21 October 2019
Revised: 03 February 2020
Accepted: 18 March 2020
Published: 05 June 2020
Issue date: June 2020

Copyright

© The Author(s) 2020

Acknowledgements

This study is mainly financially supported by the Beijing Natural Science Foundation (2182064) hosted by Prof. Rujie He. Prof. Rujie He also thanks the support from the National Natural Science Foundation of China (51772028). Prof. Min Xia thanks the support from the Fundamental Research Funds for the Central Universities (3052017010). Prof. Xinxin Jin thanks the support from the National Natural Science Foundation of China (51602082). Dr. Keqiang Zhang thanks the support from the Graduate Technology Innovation Project of Beijing Institute of Technology (No. 2019CX10020).

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