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Carbon nanotube (CNT) encapsulated magnesium-based nanocomposites to improve mechanical, degradation and antibacterial performances for biomedical device applications

Nowadays, magnesium (Mg) composites are gaining much attention in biomedical device applications due to their biocompatibility and biodegradability properties. This research is to study the microstructure, mechanical, corrosive and antibacterial properties of Mg-2.5Zn-0.5Zr/xCNT (x = 0, 0.3, 0.6, 0....

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Main Authors: Zhao, Jinguo, Haowei, Ma, Saberi, Abbas, Heydari, Zahra, Baltatu, Madalina Simona
Format: Article
Published: MDPI 2022
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.um.edu.my/40881/
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spelling my.um.eprints.408812023-09-25T07:18:10Z http://eprints.um.edu.my/40881/ Carbon nanotube (CNT) encapsulated magnesium-based nanocomposites to improve mechanical, degradation and antibacterial performances for biomedical device applications Zhao, Jinguo Haowei, Ma Saberi, Abbas Heydari, Zahra Baltatu, Madalina Simona TJ Mechanical engineering and machinery Nowadays, magnesium (Mg) composites are gaining much attention in biomedical device applications due to their biocompatibility and biodegradability properties. This research is to study the microstructure, mechanical, corrosive and antibacterial properties of Mg-2.5Zn-0.5Zr/xCNT (x = 0, 0.3, 0.6, 0.9) composites made with mechanical alloying and semi-powder metallurgy (SPM) processes, accompanied by SPS. Based on the microstructural characteristics, CNTs were almost uniformly distributed in the Mg matrix. The results displayed that the hardness and ultimate compressive strength (UCS) of the composites were meaningfully increased compared to a Mg matrix. Moreover, the degradation rate of Mg composites was almost halved in the presence of small amounts of CNTs in the Kokubo simulated body fluid (SBF). Due to the slowed degradation process, the Mg-2.5Zn-0.5Zr/0.6CNT biocomposites exhibited excellent cellular compatibility. Evaluation of antibacterial activity displayed that adding CNTs to the Mg matrix could significantly prevent the growing of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). In general, the research results showed that CNTs are an efficient reinforcement for Mg-2.5Zn-0.5Zr/CNTs biocomposites, which leads to improved mechanical, degradation and antibacterial performances. MDPI 2022-10 Article PeerReviewed Zhao, Jinguo and Haowei, Ma and Saberi, Abbas and Heydari, Zahra and Baltatu, Madalina Simona (2022) Carbon nanotube (CNT) encapsulated magnesium-based nanocomposites to improve mechanical, degradation and antibacterial performances for biomedical device applications. Coatings, 12 (10). ISSN 2079-6412, DOI https://doi.org/10.3390/coatings12101589 <https://doi.org/10.3390/coatings12101589>. 10.3390/coatings12101589
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Zhao, Jinguo
Haowei, Ma
Saberi, Abbas
Heydari, Zahra
Baltatu, Madalina Simona
Carbon nanotube (CNT) encapsulated magnesium-based nanocomposites to improve mechanical, degradation and antibacterial performances for biomedical device applications
description Nowadays, magnesium (Mg) composites are gaining much attention in biomedical device applications due to their biocompatibility and biodegradability properties. This research is to study the microstructure, mechanical, corrosive and antibacterial properties of Mg-2.5Zn-0.5Zr/xCNT (x = 0, 0.3, 0.6, 0.9) composites made with mechanical alloying and semi-powder metallurgy (SPM) processes, accompanied by SPS. Based on the microstructural characteristics, CNTs were almost uniformly distributed in the Mg matrix. The results displayed that the hardness and ultimate compressive strength (UCS) of the composites were meaningfully increased compared to a Mg matrix. Moreover, the degradation rate of Mg composites was almost halved in the presence of small amounts of CNTs in the Kokubo simulated body fluid (SBF). Due to the slowed degradation process, the Mg-2.5Zn-0.5Zr/0.6CNT biocomposites exhibited excellent cellular compatibility. Evaluation of antibacterial activity displayed that adding CNTs to the Mg matrix could significantly prevent the growing of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). In general, the research results showed that CNTs are an efficient reinforcement for Mg-2.5Zn-0.5Zr/CNTs biocomposites, which leads to improved mechanical, degradation and antibacterial performances.
format Article
author Zhao, Jinguo
Haowei, Ma
Saberi, Abbas
Heydari, Zahra
Baltatu, Madalina Simona
author_facet Zhao, Jinguo
Haowei, Ma
Saberi, Abbas
Heydari, Zahra
Baltatu, Madalina Simona
author_sort Zhao, Jinguo
title Carbon nanotube (CNT) encapsulated magnesium-based nanocomposites to improve mechanical, degradation and antibacterial performances for biomedical device applications
title_short Carbon nanotube (CNT) encapsulated magnesium-based nanocomposites to improve mechanical, degradation and antibacterial performances for biomedical device applications
title_full Carbon nanotube (CNT) encapsulated magnesium-based nanocomposites to improve mechanical, degradation and antibacterial performances for biomedical device applications
title_fullStr Carbon nanotube (CNT) encapsulated magnesium-based nanocomposites to improve mechanical, degradation and antibacterial performances for biomedical device applications
title_full_unstemmed Carbon nanotube (CNT) encapsulated magnesium-based nanocomposites to improve mechanical, degradation and antibacterial performances for biomedical device applications
title_sort carbon nanotube (cnt) encapsulated magnesium-based nanocomposites to improve mechanical, degradation and antibacterial performances for biomedical device applications
publisher MDPI
publishDate 2022
url http://eprints.um.edu.my/40881/
_version_ 1778161622697639936
score 13.211869

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