Antibacterial properties of cold sprayed ZnO nanopowder and composite coatings

In the present work, aluminium/zinc oxide (Al/ZnO) and copper/zinc (Cu/ZnO) oxide composite powders of various ratios were mixed by ball-milling. The zinc oxide was formed from wet chemical synthesis. The powders were deposited on 2 different substrates, Al 6061 and glass using Cold Spray. The anti-...

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Main Author: Zhong, Weixian.
Other Authors: School of Chemical and Biomedical Engineering
Format: Final Year Project
Language:English
Published: 2009
Subjects:
Online Access:http://hdl.handle.net/10356/16571
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-165712023-03-03T15:38:50Z Antibacterial properties of cold sprayed ZnO nanopowder and composite coatings Zhong, Weixian. School of Chemical and Biomedical Engineering ST Kinetics Kim Donghwan, Richie DRNTU::Engineering::Chemical engineering::Biotechnological production In the present work, aluminium/zinc oxide (Al/ZnO) and copper/zinc (Cu/ZnO) oxide composite powders of various ratios were mixed by ball-milling. The zinc oxide was formed from wet chemical synthesis. The powders were deposited on 2 different substrates, Al 6061 and glass using Cold Spray. The anti-bacterial effects of the original feedstock powders and the Al/ZnO and Cu/ZnO coatings were evaluated by the Standard (Viable) Plate Count method and Kirby-Bauer diffusion assay. Escherichia Coli was used as the model bacteria. The results indicated that the anti-bacterial effect of all the powders increased with the proportion of ZnO. The coatings retained the anti-bacterial properties of the original feedstock powders. This project has showed that it is possible to coat bioactive, anti-bacterial powders onto various substrates while retaining their anti-bacterial properties. This could be applied in applications requiring an anti-bacterial surface. Keywords: Cold Spray, aluminium/zinc oxide, copper/zinc oxide, ball milling, wet chemical synthesis, Standard (Viable) Plate Count method, Kirby-Bauer diffusion assay, Escherichia Coli, anti-bacterial Bachelor of Engineering (Chemical and Biomolecular Engineering) 2009-05-27T03:59:35Z 2009-05-27T03:59:35Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/16571 en Nanyang Technological University 92 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Chemical engineering::Biotechnological production
spellingShingle DRNTU::Engineering::Chemical engineering::Biotechnological production
Zhong, Weixian.
Antibacterial properties of cold sprayed ZnO nanopowder and composite coatings
description In the present work, aluminium/zinc oxide (Al/ZnO) and copper/zinc (Cu/ZnO) oxide composite powders of various ratios were mixed by ball-milling. The zinc oxide was formed from wet chemical synthesis. The powders were deposited on 2 different substrates, Al 6061 and glass using Cold Spray. The anti-bacterial effects of the original feedstock powders and the Al/ZnO and Cu/ZnO coatings were evaluated by the Standard (Viable) Plate Count method and Kirby-Bauer diffusion assay. Escherichia Coli was used as the model bacteria. The results indicated that the anti-bacterial effect of all the powders increased with the proportion of ZnO. The coatings retained the anti-bacterial properties of the original feedstock powders. This project has showed that it is possible to coat bioactive, anti-bacterial powders onto various substrates while retaining their anti-bacterial properties. This could be applied in applications requiring an anti-bacterial surface. Keywords: Cold Spray, aluminium/zinc oxide, copper/zinc oxide, ball milling, wet chemical synthesis, Standard (Viable) Plate Count method, Kirby-Bauer diffusion assay, Escherichia Coli, anti-bacterial
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Zhong, Weixian.
format Final Year Project
author Zhong, Weixian.
author_sort Zhong, Weixian.
title Antibacterial properties of cold sprayed ZnO nanopowder and composite coatings
title_short Antibacterial properties of cold sprayed ZnO nanopowder and composite coatings
title_full Antibacterial properties of cold sprayed ZnO nanopowder and composite coatings
title_fullStr Antibacterial properties of cold sprayed ZnO nanopowder and composite coatings
title_full_unstemmed Antibacterial properties of cold sprayed ZnO nanopowder and composite coatings
title_sort antibacterial properties of cold sprayed zno nanopowder and composite coatings
publishDate 2009
url http://hdl.handle.net/10356/16571
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