单位:[1]Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China[2]Minist Educ, Engn Res Ctr Ceram Mat Addit Mfg, Wuhan 430074, Peoples R China[3]Huazhong Univ Sci & Technol,Tongji Hosp,Tongji Med Coll,Dept Orthoped Surg,Wuhan 430030,Peoples R China外科学系华中科技大学同济医学院附属同济医院骨科
Bone scaffolds require both good bioactivity and mechanical properties to keep shape and promote bone repair. In this work, T-ZnOw enhanced biphasic calcium phosphate (BCP) scaffolds with triply periodic minimal surface (TPMS)-based double-layer porous structure were fabricated by digital light processing (DLP) with high precision. Property of suspension was first discussed to obtain better printing quality. After sintering, T-ZnOw reacts with beta-tricalcium phosphate (beta-TCP) to form Ca19Zn2(PO4)(14), and inhibits the phase transition to alpha-TCP. With the content of T-ZnOw increasing from 0 to 2 wt%, the flexural strength increases from 40.9 to 68.5 MPa because the four-needle whiskers can disperse stress, and have the effect of pulling out as well as fracture toughening. However, excessive whiskers will reduce the cure depth, and cause more printing defects, thus reducing the mechanical strength. Besides, T-ZnOw accelerates the deposition of apatite, and the sample with 2 wt% T-ZnOw shows the fastest mineralization rate. The good biocompatibility has been proved by cell proliferation test. Results confirmed that doping T-ZnOw can improve the mechanical strength of BCP scaffolds, and keep good biological property, which provides a new strategy for better bone repair.
基金:
Major Special Projects of Technological Innovation in Hubei Province [2019AAA002]; National Key R&D Program of China [2018YFB1105503]; Fundamental Research Funds for the Central Universities [2019kfyXMPY020, 2020kfyFPZX003, 2018KFYYXJJ030, 2019kfyXKJC011]
第一作者单位:[1]Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China[2]Minist Educ, Engn Res Ctr Ceram Mat Addit Mfg, Wuhan 430074, Peoples R China
通讯作者:
通讯机构:[1]Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China[2]Minist Educ, Engn Res Ctr Ceram Mat Addit Mfg, Wuhan 430074, Peoples R China
推荐引用方式(GB/T 7714):
Pan Ming-Zhu,Hua Shuai-Bin,Wu Jia-Min,et al.Preparation and properties of T-ZnOw enhanced BCP scaffolds with double-layer structure by digital light processing[J].JOURNAL OF ADVANCED CERAMICS.2022,11(4):570-581.doi:10.1007/s40145-021-0557-z.
APA:
Pan, Ming-Zhu,Hua, Shuai-Bin,Wu, Jia-Min,Yuan, Xi,Deng, Ze-Lin...&Shi, Yu-Sheng.(2022).Preparation and properties of T-ZnOw enhanced BCP scaffolds with double-layer structure by digital light processing.JOURNAL OF ADVANCED CERAMICS,11,(4)
MLA:
Pan, Ming-Zhu,et al."Preparation and properties of T-ZnOw enhanced BCP scaffolds with double-layer structure by digital light processing".JOURNAL OF ADVANCED CERAMICS 11..4(2022):570-581