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Electrophoretic Deposition of Chitosan/h-BN and Chitosan/h-BN/TiO(2) Composite Coatings on Stainless Steel (316L) Substrates

This article presents the results of an experimental investigation designed to deposit chitosan/hexagonal boron nitride (h-BN) and chitosan/h-BN/titania (TiO(2)) composites on SS316L substrates using electrophoretic deposition (EPD) for potential antibacterial applications. The influence of EPD para...

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Detalles Bibliográficos
Autores principales: Raddaha, Namir S., Cordero-Arias, Luis, Cabanas-Polo, Sandra, Virtanen, Sannakaisa, Roether, Judith A., Boccaccini, Aldo R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5453270/
https://www.ncbi.nlm.nih.gov/pubmed/28788541
http://dx.doi.org/10.3390/ma7031814
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author Raddaha, Namir S.
Cordero-Arias, Luis
Cabanas-Polo, Sandra
Virtanen, Sannakaisa
Roether, Judith A.
Boccaccini, Aldo R.
author_facet Raddaha, Namir S.
Cordero-Arias, Luis
Cabanas-Polo, Sandra
Virtanen, Sannakaisa
Roether, Judith A.
Boccaccini, Aldo R.
author_sort Raddaha, Namir S.
collection PubMed
description This article presents the results of an experimental investigation designed to deposit chitosan/hexagonal boron nitride (h-BN) and chitosan/h-BN/titania (TiO(2)) composites on SS316L substrates using electrophoretic deposition (EPD) for potential antibacterial applications. The influence of EPD parameters (voltage and deposition time) and relative concentrations of chitosan, h-BN and TiO(2) in suspension on deposition yield was studied. The composition and structure of deposited coatings were investigated by FTIR, XRD and SEM. It was observed that h-BN and TiO(2) particles were dispersed in the chitosan matrix through simultaneous deposition. The adhesion between the electrophoretic coatings and the stainless steel substrates was tested by using tape test technique, and the results showed that the adhesion strength corresponded to 3B and 4B classes. Corrosion resistance was evaluated by electrochemical polarization curves, indicating enhanced corrosion resistance of the chitosan/h-BN/TiO(2) and chitosan/h-BN coatings compared to the bare stainless steel substrate. In order to investigate the in-vitro inorganic bioactivity, coatings were immersed in simulated body fluid (SBF) for 28 days. FTIR and XRD results showed no formation of hydroxyapatite on the surface of chitosan/h-BN/TiO(2) and chitosan/h-BN coatings, which are therefore non bioactive but potentially useful as antibacterial coatings.
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spelling pubmed-54532702017-07-28 Electrophoretic Deposition of Chitosan/h-BN and Chitosan/h-BN/TiO(2) Composite Coatings on Stainless Steel (316L) Substrates Raddaha, Namir S. Cordero-Arias, Luis Cabanas-Polo, Sandra Virtanen, Sannakaisa Roether, Judith A. Boccaccini, Aldo R. Materials (Basel) Article This article presents the results of an experimental investigation designed to deposit chitosan/hexagonal boron nitride (h-BN) and chitosan/h-BN/titania (TiO(2)) composites on SS316L substrates using electrophoretic deposition (EPD) for potential antibacterial applications. The influence of EPD parameters (voltage and deposition time) and relative concentrations of chitosan, h-BN and TiO(2) in suspension on deposition yield was studied. The composition and structure of deposited coatings were investigated by FTIR, XRD and SEM. It was observed that h-BN and TiO(2) particles were dispersed in the chitosan matrix through simultaneous deposition. The adhesion between the electrophoretic coatings and the stainless steel substrates was tested by using tape test technique, and the results showed that the adhesion strength corresponded to 3B and 4B classes. Corrosion resistance was evaluated by electrochemical polarization curves, indicating enhanced corrosion resistance of the chitosan/h-BN/TiO(2) and chitosan/h-BN coatings compared to the bare stainless steel substrate. In order to investigate the in-vitro inorganic bioactivity, coatings were immersed in simulated body fluid (SBF) for 28 days. FTIR and XRD results showed no formation of hydroxyapatite on the surface of chitosan/h-BN/TiO(2) and chitosan/h-BN coatings, which are therefore non bioactive but potentially useful as antibacterial coatings. MDPI 2014-03-04 /pmc/articles/PMC5453270/ /pubmed/28788541 http://dx.doi.org/10.3390/ma7031814 Text en © 2014 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Raddaha, Namir S.
Cordero-Arias, Luis
Cabanas-Polo, Sandra
Virtanen, Sannakaisa
Roether, Judith A.
Boccaccini, Aldo R.
Electrophoretic Deposition of Chitosan/h-BN and Chitosan/h-BN/TiO(2) Composite Coatings on Stainless Steel (316L) Substrates
title Electrophoretic Deposition of Chitosan/h-BN and Chitosan/h-BN/TiO(2) Composite Coatings on Stainless Steel (316L) Substrates
title_full Electrophoretic Deposition of Chitosan/h-BN and Chitosan/h-BN/TiO(2) Composite Coatings on Stainless Steel (316L) Substrates
title_fullStr Electrophoretic Deposition of Chitosan/h-BN and Chitosan/h-BN/TiO(2) Composite Coatings on Stainless Steel (316L) Substrates
title_full_unstemmed Electrophoretic Deposition of Chitosan/h-BN and Chitosan/h-BN/TiO(2) Composite Coatings on Stainless Steel (316L) Substrates
title_short Electrophoretic Deposition of Chitosan/h-BN and Chitosan/h-BN/TiO(2) Composite Coatings on Stainless Steel (316L) Substrates
title_sort electrophoretic deposition of chitosan/h-bn and chitosan/h-bn/tio(2) composite coatings on stainless steel (316l) substrates
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5453270/
https://www.ncbi.nlm.nih.gov/pubmed/28788541
http://dx.doi.org/10.3390/ma7031814
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