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

作　　者：Chengwei FENG Keqiang ZHANG Rujie HE Guojiao DING Min XIA Xinxin JIN Chen XIE 

机构地区：[1]Instiute of Advanced Structure Technology,Bejing Institute of Technology,Beijing 100081,China [2]School of Materials Science and Engineering,Beijing Institute of Technology,Bejing 100081,China [3]School of Materials Science and Engineering,Harbin University of Science and Technology,Harbin 150040,China [4]Shanghai Aircrafi Manufacturing Co.,Ltd,Shanghai 201324,China

出　　处：《Journal of Advanced Ceramics》2020年第3期360-373,共14页先进陶瓷（英文）

基　　金：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.M i n 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).

摘　　要：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 ffects of dispersant dosage,solid loading,and sintering temperature were studied.The optimal dispersant dosage,solid loading,and sintering temperature were 2wt%,50vol%,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.

关 键 词：additive manufacturing digital light processing vat photopolymerization HYDROXYAPATITE bioceramic scaffold 

分 类 号：R318.08[医药卫生—生物医学工程] TQ174.1[医药卫生—基础医学]