Microstructure evolution and texture tailoring of reduced graphene oxide reinforced Zn scaffold
Zinc (Zn) possesses desirable degradability and favorable biocompatibility, thus being recognized as a promising bone implant material. Nevertheless, the insufficient mechanical performance limits its further clinical application. In this study, reduced graphene oxide (RGO) was used as reinforcement...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2021-05-01
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| Series: | Bioactive Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2452199X20302681 |
| _version_ | 1797204990976065536 |
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| author | Youwen Yang Yun Cheng Shuping Peng Liang Xu Chongxian He Fangwei Qi Mingchun Zhao Cijun Shuai |
| author_facet | Youwen Yang Yun Cheng Shuping Peng Liang Xu Chongxian He Fangwei Qi Mingchun Zhao Cijun Shuai |
| author_sort | Youwen Yang |
| collection | DOAJ |
| description | Zinc (Zn) possesses desirable degradability and favorable biocompatibility, thus being recognized as a promising bone implant material. Nevertheless, the insufficient mechanical performance limits its further clinical application. In this study, reduced graphene oxide (RGO) was used as reinforcement in Zn scaffold fabricated via laser additive manufacturing. Results showed that the homogeneously dispersed RGO simultaneously enhanced the strength and ductility of Zn scaffold. On one hand, the enhanced strength was ascribed to (i) the grain refinement caused by the pinning effect of RGO, (ii) the efficient load shift due to the huge specific surface area of RGO and the favorable interface bonding between RGO and Zn matrix, and (iii) the Orowan strengthening by the homogeneously distributed RGO. On the other hand, the improved ductility was owing to the RGO-induced random orientation of grain with texture index reducing from 20.5 to 7.3, which activated more slip systems and provided more space to accommodate dislocation. Furthermore, the cell test confirmed that RGO promoted cell growth and differentiation. This study demonstrated the great potential of RGO in tailoring the mechanical performance and cell behavior of Zn scaffold for bone repair. |
| first_indexed | 2024-04-24T08:44:01Z |
| format | Article |
| id | doaj.art-227c1578e07e412caa53a87d77e4810a |
| institution | Directory Open Access Journal |
| issn | 2452-199X |
| language | English |
| last_indexed | 2024-04-24T08:44:01Z |
| publishDate | 2021-05-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Bioactive Materials |
| spelling | doaj.art-227c1578e07e412caa53a87d77e4810a2024-04-16T14:22:55ZengKeAi Communications Co., Ltd.Bioactive Materials2452-199X2021-05-016512301241Microstructure evolution and texture tailoring of reduced graphene oxide reinforced Zn scaffoldYouwen Yang0Yun Cheng1Shuping Peng2Liang Xu3Chongxian He4Fangwei Qi5Mingchun Zhao6Cijun Shuai7Institute of Bioadditive Manufacturing, Jiangxi University of Science and Technology, Nanchang, 330013, ChinaInstitute of Bioadditive Manufacturing, Jiangxi University of Science and Technology, Nanchang, 330013, ChinaNHC Key Laboratory of Carcinogenesis, School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China; School of Energy and Machinery Engineering, Jiangxi University of Science and Technology, Nanchang, 330013, ChinaSchool of Energy and Machinery Engineering, Jiangxi University of Science and Technology, Nanchang, 330013, ChinaInstitute of Bioadditive Manufacturing, Jiangxi University of Science and Technology, Nanchang, 330013, ChinaInstitute of Bioadditive Manufacturing, Jiangxi University of Science and Technology, Nanchang, 330013, ChinaSchool of Materials and Engineering, Central South University, Changsha, 410083, ChinaInstitute of Bioadditive Manufacturing, Jiangxi University of Science and Technology, Nanchang, 330013, China; State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha, 410083, China; Shenzhen Institute of Information Technology, Shenzhen, 518172, China; Corresponding author. Institute of Bioadditive Manufacturing, Jiangxi University of Science and Technology, Nanchang, 330013, China.Zinc (Zn) possesses desirable degradability and favorable biocompatibility, thus being recognized as a promising bone implant material. Nevertheless, the insufficient mechanical performance limits its further clinical application. In this study, reduced graphene oxide (RGO) was used as reinforcement in Zn scaffold fabricated via laser additive manufacturing. Results showed that the homogeneously dispersed RGO simultaneously enhanced the strength and ductility of Zn scaffold. On one hand, the enhanced strength was ascribed to (i) the grain refinement caused by the pinning effect of RGO, (ii) the efficient load shift due to the huge specific surface area of RGO and the favorable interface bonding between RGO and Zn matrix, and (iii) the Orowan strengthening by the homogeneously distributed RGO. On the other hand, the improved ductility was owing to the RGO-induced random orientation of grain with texture index reducing from 20.5 to 7.3, which activated more slip systems and provided more space to accommodate dislocation. Furthermore, the cell test confirmed that RGO promoted cell growth and differentiation. This study demonstrated the great potential of RGO in tailoring the mechanical performance and cell behavior of Zn scaffold for bone repair.http://www.sciencedirect.com/science/article/pii/S2452199X20302681Zn scaffoldRGOLaser additive manufacturingMechanical performanceCell behavior |
| spellingShingle | Youwen Yang Yun Cheng Shuping Peng Liang Xu Chongxian He Fangwei Qi Mingchun Zhao Cijun Shuai Microstructure evolution and texture tailoring of reduced graphene oxide reinforced Zn scaffold Bioactive Materials Zn scaffold RGO Laser additive manufacturing Mechanical performance Cell behavior |
| title | Microstructure evolution and texture tailoring of reduced graphene oxide reinforced Zn scaffold |
| title_full | Microstructure evolution and texture tailoring of reduced graphene oxide reinforced Zn scaffold |
| title_fullStr | Microstructure evolution and texture tailoring of reduced graphene oxide reinforced Zn scaffold |
| title_full_unstemmed | Microstructure evolution and texture tailoring of reduced graphene oxide reinforced Zn scaffold |
| title_short | Microstructure evolution and texture tailoring of reduced graphene oxide reinforced Zn scaffold |
| title_sort | microstructure evolution and texture tailoring of reduced graphene oxide reinforced zn scaffold |
| topic | Zn scaffold RGO Laser additive manufacturing Mechanical performance Cell behavior |
| url | http://www.sciencedirect.com/science/article/pii/S2452199X20302681 |
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