Physicochemical and bioactivity properties of hydroxy apatite coatings electrodeposited onto titanium substrates / Nik Norziehana Che Isa

Titanium and its alloys have widely been used as metallic implants because of their good biocompatibility and high corrosion resistance. However, they exhibit no bioactive properties and fail to bind to bone tissue. In order to make the titanium implants bioactive, hydroxyapatite (HAp) has been coat...

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Main Author:	Che Isa, Nik Norziehana
Format:	Thesis
Language:	English
Published:	2013
Online Access:	https://ir.uitm.edu.my/id/eprint/18415/2/TM_NIK%20NORZIEHANA%20CHE%20ISA%20AS%2013_5.pdf
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spelling	my-uitm-ir.184152022-04-11T05:56:10Z Physicochemical and bioactivity properties of hydroxy apatite coatings electrodeposited onto titanium substrates / Nik Norziehana Che Isa 2013-05 Che Isa, Nik Norziehana Titanium and its alloys have widely been used as metallic implants because of their good biocompatibility and high corrosion resistance. However, they exhibit no bioactive properties and fail to bind to bone tissue. In order to make the titanium implants bioactive, hydroxyapatite (HAp) has been coated onto titanium surface. In this study, HAp coatings were successfully prepared on titanium substrates by electrodeposition technique using aqueous solution containing CaCb + NH4H2PO4 with Ca/P ratio equal to 1.67. The effects of varying deposition conditions and solutions such as applied potential, deposition time, deposition solution concentration and the addition of chitosan into deposition solution on the electrodeposition process as well as the formation of HAp coatings were investigated. The obtained deposited HAp samples were characterized using FESEM, EDAX, XRD, FTIR, immersion in SBF solution and Scotch® tape test. The deposition conditions and solutions have strongly affected the formation of HAp coatings. The best HAp coating was produced by applying a constant potential o f - 1.5 V vs Ag/AgCl using 0.167 M CaC^ + 0.1 M NH4H2PO4 solution at 80 °C for 30 min. The addition of 5 volume percent of chitosan into the deposition solution has improved the adhesion of HAp coatings on the Ti surface. It was found that the prepared HAp coatings are bioactive as shown by the change of surface morphology after immersion in SBF solution for a few days. The HAp material can also be deposited on different types of Ti substrates (i.e.: Ti mesh and NiTi alloy) using the electrodeposition technique. It was also proven that coated HAp onto Ti substrates gave better physicochemical properties of Ti implants. 2013-05 Thesis https://ir.uitm.edu.my/id/eprint/18415/ https://ir.uitm.edu.my/id/eprint/18415/2/TM_NIK%20NORZIEHANA%20CHE%20ISA%20AS%2013_5.pdf text en public mphil masters Universiti Teknologi MARA Faculty of Applied Sciences
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
description	Titanium and its alloys have widely been used as metallic implants because of their good biocompatibility and high corrosion resistance. However, they exhibit no bioactive properties and fail to bind to bone tissue. In order to make the titanium implants bioactive, hydroxyapatite (HAp) has been coated onto titanium surface. In this study, HAp coatings were successfully prepared on titanium substrates by electrodeposition technique using aqueous solution containing CaCb + NH4H2PO4 with Ca/P ratio equal to 1.67. The effects of varying deposition conditions and solutions such as applied potential, deposition time, deposition solution concentration and the addition of chitosan into deposition solution on the electrodeposition process as well as the formation of HAp coatings were investigated. The obtained deposited HAp samples were characterized using FESEM, EDAX, XRD, FTIR, immersion in SBF solution and Scotch® tape test. The deposition conditions and solutions have strongly affected the formation of HAp coatings. The best HAp coating was produced by applying a constant potential o f - 1.5 V vs Ag/AgCl using 0.167 M CaC^ + 0.1 M NH4H2PO4 solution at 80 °C for 30 min. The addition of 5 volume percent of chitosan into the deposition solution has improved the adhesion of HAp coatings on the Ti surface. It was found that the prepared HAp coatings are bioactive as shown by the change of surface morphology after immersion in SBF solution for a few days. The HAp material can also be deposited on different types of Ti substrates (i.e.: Ti mesh and NiTi alloy) using the electrodeposition technique. It was also proven that coated HAp onto Ti substrates gave better physicochemical properties of Ti implants.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Che Isa, Nik Norziehana
spellingShingle	Che Isa, Nik Norziehana Physicochemical and bioactivity properties of hydroxy apatite coatings electrodeposited onto titanium substrates / Nik Norziehana Che Isa
author_facet	Che Isa, Nik Norziehana
author_sort	Che Isa, Nik Norziehana
title	Physicochemical and bioactivity properties of hydroxy apatite coatings electrodeposited onto titanium substrates / Nik Norziehana Che Isa
title_short	Physicochemical and bioactivity properties of hydroxy apatite coatings electrodeposited onto titanium substrates / Nik Norziehana Che Isa
title_full	Physicochemical and bioactivity properties of hydroxy apatite coatings electrodeposited onto titanium substrates / Nik Norziehana Che Isa
title_fullStr	Physicochemical and bioactivity properties of hydroxy apatite coatings electrodeposited onto titanium substrates / Nik Norziehana Che Isa
title_full_unstemmed	Physicochemical and bioactivity properties of hydroxy apatite coatings electrodeposited onto titanium substrates / Nik Norziehana Che Isa
title_sort	physicochemical and bioactivity properties of hydroxy apatite coatings electrodeposited onto titanium substrates / nik norziehana che isa
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Applied Sciences
publishDate	2013
url	https://ir.uitm.edu.my/id/eprint/18415/2/TM_NIK%20NORZIEHANA%20CHE%20ISA%20AS%2013_5.pdf
_version_	1783733675736694784

Physicochemical and bioactivity properties of hydroxy apatite coatings electrodeposited onto titanium substrates / Nik Norziehana Che Isa

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