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Effect of Zn content on 3D gel-printed porous Mg–Zn scaffolds for bone engineering

  • Materials for life sciences
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Abstract

This study successfully prepared porous magnesium–zinc (Mg–xZn, x: mass ratio of Zn) scaffolds by the 3D gel-printing method. The effect of adding a large percentage of Zn content on porous Mg–xZn scaffolds was also investigated to comprehensively evaluate the effect of Zn on magnesium alloys. The viscosity of slurry decreases with the increase in Zn content. The optimum solid content of slurry suitable for printing is about 60%. The compressive strength of pure Mg, 0.9Mg–0.1Zn, 0.7Mg–0.3Zn, and 0.5Mg–0.5Zn porous scaffolds were 6.29 MPa, 13.03 MPa, 7.69 MPa, and 6.61 MPa, respectively, meeting the requirements of cancellous bone (0.1–16 MPa). In vitro degradation results showed that the degradation rate of Mg scaffolds can be slowed down by adding the appropriate amount of Zn. The fine and dispersed second-phase precipitation can improve the comprehensive properties of Mg–Zn alloy. This study facilitates a comprehensive evaluation of the effect of Zn content on 3D gel-printed magnesium scaffolds.

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Acknowledgements

This work was supported by Science and Technology Projects of Guangdong Province, P.R. China (Grant No. 2016B090914001) and Jihua Laboratory Project “Additive Manufacturing for Difficulty-to-Machine Materials” (Grant No.X190061UZ190).

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Authors and Affiliations

  1. Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, People’s Republic of China

    Tao Lin, Jianhui Dong, Xueting Wang & Huiping Shao

  2. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, 510006, People’s Republic of China

    Xin Deng

  3. Jihua Laboratory, Chengye Mansion, 13 Nanpingxi Road, Guicheng Nanhai, Foshan, 528299, Guangdong, People’s Republic of China

    Xin Deng

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  1. Tao Lin
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Contributions

TL involved in investigation, conceptualization, methodology, writing—original draft preparation, writing—reviewing, and editing. JD involved in investigation, formal analysis, writing—original draft, and data curation. XW involved in writing—reviewing, and editing. XD involved in writing—reviewing, and editing. HS involved in resources, funding acquisition, and supervision.

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Correspondence to Tao Lin or Xin Deng.

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Lin, T., Dong, J., Wang, X. et al. Effect of Zn content on 3D gel-printed porous Mg–Zn scaffolds for bone engineering. J Mater Sci 58, 1229–1242 (2023). https://doi.org/10.1007/s10853-022-08108-5

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  • DOI: https://doi.org/10.1007/s10853-022-08108-5

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