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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Improvement of corrosion resistance and antibacterial effect of NiTi orthopedic materials by chitosan and gold nanoparticles
Applied Surface Science, Volume 292, Year 2014
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Description
Biocomposite consists of gold nanoparticles (AuNPs) and a natural polymer as Chitosan (CS) was electrodeposited over NiTi alloy to improve biocompatibility, biostability, surface corrosion resistance and antibacterial effect for orthopedic implantation. The forming process and surface morphology of this biocomposite coats over NiTi alloy were studied. The results showed that the nm-scale gold particles were embedded in the composite forming compact, thick and smooth coat. Elemental analysis revealed significant less Ni ion release from the coated NiTi alloy compared with the uncoated one by 20 fold. Furthermore, the electrochemical corrosion measurements indicated that AuNPs/CS composite coat was effective for improving corrosion resistance in different immersion times and at all pH values, which suggests that the coated NiTi alloys have potential for orthopedic applications. Additionally, the efficiencies of the biocomposite coats for inhibiting bacterial growth indicate high antibacterial effect. © 2013 Elsevier B.V.
Authors & Co-Authors
Ahmed, Rasha A.
Saudi Arabia, Taif
Taif University
Egypt, Cairo
Ministry of Justice
Fadl-Allah, Sahar A.
Saudi Arabia, Taif
Taif University
Egypt, Giza
Faculty of Science
El-Bagoury, Nader
Saudi Arabia, Taif
Taif University
Egypt, Cairo
Central Metallurgical Research and Development Institute
Gad El-Rab, Sanaa M.F.
Saudi Arabia, Taif
Taif University
Egypt, Asyut
Faculty of Science
Statistics
Citations: 60
Authors: 4
Affiliations: 5
Identifiers
Doi:
10.1016/j.apsusc.2013.11.150
ISSN:
01694332