MWCNTs-TiO 2 Incorporated-Mg Composites to Improve the Mechanical, Corrosion and Biological Characteristics for Use in Biomedical Fields.

Autor:	Amirzade-Iranaq MT; Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran., Omidi M; Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran., Bakhsheshi-Rad HR; Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran., Saberi A; Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran., Abazari S; Department of Materials and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran., Teymouri N; Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran., Naeimi F; Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran., Sergi C; Department of Chemical Engineering Materials Environment, Sapienza University of Rome, Eudossiana 18, 00184 Roma, Italy., Ismail AF; Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia., Sharif S; Advanced Manufacturing Research Group, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia., Berto F; Department of Chemical Engineering Materials Environment, Sapienza University of Rome, Eudossiana 18, 00184 Roma, Italy.
Jazyk:	angličtina
Zdroj:	Materials (Basel, Switzerland) [Materials (Basel)] 2023 Feb 25; Vol. 16 (5). Date of Electronic Publication: 2023 Feb 25.
DOI:	10.3390/ma16051919
Abstrakt:	This study attempts to synthesize MgZn/TiO 2 -MWCNTs composites with varying TiO 2 -MWCNT concentrations using mechanical alloying and a semi-powder metallurgy process coupled with spark plasma sintering. It also aims to investigate the mechanical, corrosion, and antibacterial properties of these composites. When compared to the MgZn composite, the microhardness and compressive strength of the MgZn/TiO 2 -MWCNTs composites were enhanced to 79 HV and 269 MPa, respectively. The results of cell culture and viability experiments revealed that incorporating TiO 2 -MWCNTs increased osteoblast proliferation and attachment and enhanced the biocompatibility of the TiO 2 -MWCNTs nanocomposite. It was observed that the corrosion resistance of the Mg-based composite was improved and the corrosion rate was reduced to about 2.1 mm/y with the addition of 10 wt% TiO 2 -1 wt% MWCNTs. In vitro testing for up to 14 days revealed a reduced degradation rate following the incorporation of TiO 2 -MWCNTs reinforcement into a MgZn matrix alloy. Antibacterial evaluations revealed that the composite had antibacterial activity, with an inhibition zone of 3.7 mm against Staphylococcus aureus . The MgZn/TiO 2 -MWCNTs composite structure has great potential for use in orthopedic fracture fixation devices.
Databáze:	MEDLINE
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