Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating Technique
The sol-gel method provides a wide variety of applications in the medical field. One of these applications is the formation of coatings on the metal implants. The coatings containing specific additive can enhance or improve the existing surface properties of the substrate. In this work, titania sol-...
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doaj-36a831b21264456da16ae5af1c0013752021-02-19T00:02:51ZengMDPI AGCoatings2079-64122021-02-011124324310.3390/coatings11020243Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating TechniqueDiana Horkavcová0Quentin Doubet1Gisèle Laure Lecomte-Nana2Eva Jablonská3Aleš Helebrant4Department of Glass and Ceramics, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech RepublicInstitut de Recherche sur les Céramiques, ENSIL-ENSCI, 12 rue Atlantis, Université de Limoges, 87068 Limoges, FranceInstitut de Recherche sur les Céramiques, ENSIL-ENSCI, 12 rue Atlantis, Université de Limoges, 87068 Limoges, FranceDepartment of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 3, 16628 Prague, Czech RepublicDepartment of Glass and Ceramics, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech RepublicThe sol-gel method provides a wide variety of applications in the medical field. One of these applications is the formation of coatings on the metal implants. The coatings containing specific additive can enhance or improve the existing surface properties of the substrate. In this work, titania sol-gel coatings were doped with two forms of silver (AgNO<sub>3</sub>, Ag<sub>3</sub>PO<sub>4</sub>) and synthetic hydroxyapatite and applied on the titanium samples by dip-coating technique. After drying and slow firing, all coatings were characterized with scanning electron microscopy. Thin coatings were successfully prepared with excellent adhesion to the substrate (measured by ASTM D 3359-2), despite cracks. Coatings containing silver and hydroxyapatite demonstrated a 100% antibacterial effect against <i>Escherichia coli</i> after 24 h. The bioactivity of the coatings containing hydroxyapatite tested in modified simulated body fluid under static-dynamic conditions was confirmed by bone-like hydroxyapatite precipitation. To better understand the interaction of the coatings with simulated body fluid (SBF), changes of Ca<sup>2+</sup> and (PO<sub>4</sub>)<sup>3−</sup> ions concentrations and pH values were studied.https://www.mdpi.com/2079-6412/11/2/243titania coatingsol-geldip-coatingsilverhydroxyapatitetape test |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Diana Horkavcová Quentin Doubet Gisèle Laure Lecomte-Nana Eva Jablonská Aleš Helebrant |
spellingShingle |
Diana Horkavcová Quentin Doubet Gisèle Laure Lecomte-Nana Eva Jablonská Aleš Helebrant Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating Technique Coatings titania coating sol-gel dip-coating silver hydroxyapatite tape test |
author_facet |
Diana Horkavcová Quentin Doubet Gisèle Laure Lecomte-Nana Eva Jablonská Aleš Helebrant |
author_sort |
Diana Horkavcová |
title |
Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating Technique |
title_short |
Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating Technique |
title_full |
Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating Technique |
title_fullStr |
Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating Technique |
title_full_unstemmed |
Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating Technique |
title_sort |
development of adhesive, bioactive and antibacterial titania sol-gel coating on titanium substrate by dip-coating technique |
publisher |
MDPI AG |
series |
Coatings |
issn |
2079-6412 |
publishDate |
2021-02-01 |
description |
The sol-gel method provides a wide variety of applications in the medical field. One of these applications is the formation of coatings on the metal implants. The coatings containing specific additive can enhance or improve the existing surface properties of the substrate. In this work, titania sol-gel coatings were doped with two forms of silver (AgNO<sub>3</sub>, Ag<sub>3</sub>PO<sub>4</sub>) and synthetic hydroxyapatite and applied on the titanium samples by dip-coating technique. After drying and slow firing, all coatings were characterized with scanning electron microscopy. Thin coatings were successfully prepared with excellent adhesion to the substrate (measured by ASTM D 3359-2), despite cracks. Coatings containing silver and hydroxyapatite demonstrated a 100% antibacterial effect against <i>Escherichia coli</i> after 24 h. The bioactivity of the coatings containing hydroxyapatite tested in modified simulated body fluid under static-dynamic conditions was confirmed by bone-like hydroxyapatite precipitation. To better understand the interaction of the coatings with simulated body fluid (SBF), changes of Ca<sup>2+</sup> and (PO<sub>4</sub>)<sup>3−</sup> ions concentrations and pH values were studied. |
topic |
titania coating sol-gel dip-coating silver hydroxyapatite tape test |
url |
https://www.mdpi.com/2079-6412/11/2/243 |
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