Characterization and biological properties of TiO2/PCL hybrid layers prepared via sol–gel dip coating for surface modification of titanium implants

When bioactive coatings are applied to medical implants by means of sol-gel dip coating technique, the biological proprieties of the implant surface can be modified to match the properties of the surrounding tissues. In this study, sol-gel method is used to synthesized organic-inorganic nanocomposites materials consisting of an inorganic titania matrix in which 10 wt% of a biodegradable polymer, the poly-ε-caprolactone (PCL), was incorporated. The synthesized materials, in sol phase, were used to dip-coat a commercially pure titanium grade 4 substrate in order to improve its surface biological properties. Materials were characterized using Fourier transform infrared spectroscopy (FT-IR) and a morphological analysis of the obtained films was performed via scanning electron microscopy (SEM). Coating bioactivity was investigated by soaking coated substrates in a fluid simulating the human blood plasma (SBF) and successively evaluating the formation of a hydroxyapatite layer on their surface by means of SEM/EDX (energy dispersive X-ray).

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Preparation, characterization, and biocompatibility of different metal oxide/PEG-based hybrid coating synthesized by sol–gel dip coating method for surface modification of titanium

Progress in Organic Coatings ◽

10.1016/j.porgcoat.2019.02.007 ◽

2019 ◽

Vol 130 ◽

pp. 206-213 ◽

Cited By ~ 8

Author(s):

José Carlos Bernedo Alcázar ◽

Rafaela Moreira Javier Lemos ◽

Marcus Cristian Muniz Conde ◽

Luiz Alexandre Chisini ◽

Mabel Miluska Suca Salas ◽

...

Keyword(s):

Surface Modification ◽

Metal Oxide ◽

Sol Gel ◽

Dip Coating ◽

Hybrid Coating ◽

Coating Method ◽

Dip Coating Method ◽

Modification Of Titanium

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Modification of the titanium implants surface with TiO2 coatings obtained by sol-gel method via dip-coating

MATEC Web of Conferences ◽

10.1051/matecconf/201822603014 ◽

2018 ◽

Vol 226 ◽

pp. 03014

Author(s):

Vitaly A. Tarala ◽

Alexander A. Dolgalev ◽

Alexander A. Kravtsov ◽

Irina S. Chikulina ◽

Boris V. Bukhalov

Keyword(s):

Titanium Dioxide ◽

Sol Gel ◽

Dip Coating ◽

Titanium Implants ◽

High Rate ◽

Drawing Rate ◽

Gel Method ◽

Sol Gel Method ◽

Automated Method ◽

Tio2 Coatings

Within the framework of the study, TiO2 coatings were obtained by sol-gel method via dip-coating. For the films obtaining, manual drawing the substrate from the solution at a relatively high rate of 30 mm / min and automated drawing from the solution at low drawing rates (from 1 to 10 mm / min) were used. The morphology of coatings has been studied by scanning electron microscopy. The influence of the mode and the rate of drawing of the substrate from the solution on the films morphology was demonstrated. Analysis of the data showed, that the surface morphology of the coatings obtained at lower drawing rates by an automated method is much more homogeneous - the titanium dioxide films completely repeats the topography of the substrate surface, there are practically no fissures. Qualitative coatings of titanium dioxide, completely replicating the surface relief of the substrate, can be obtained by this method. Selection of the substrate drawing rate allows reducing the influence of the substrate topography and avoiding the appearance of crystallization centers, and as a consequence, the appearance of defects in the morphology of coatings, such as fissures or microparticles.

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Titanium Dioxide Coatings Doubly-Doped with Ca and Ag Ions as Corrosion Resistant, Biocompatible, and Bioactive Materials for Medical Applications

Coatings ◽

10.3390/coatings10020169 ◽

2020 ◽

Vol 10 (2) ◽

pp. 169

Author(s):

Barbara Burnat ◽

Patrycja Olejarz ◽

Damian Batory ◽

Michal Cichomski ◽

Marta Kaminska ◽

...

Keyword(s):

Titanium Dioxide ◽

Sol Gel ◽

Immersion Test ◽

Dip Coating ◽

Biological Properties ◽

Biological Evaluation ◽

Molar Ratio ◽

Bioactive Materials ◽

Corrosion Resistant ◽

X Ray

The aim of this study was to develop a multifunctional biomedical coating that is highly corrosion resistant, biocompatible, and reveals the bioactive properties. For that purpose, titanium dioxide coatings doubly-doped with Ca and Ag ions were deposited by dip-coating onto M30NW biomedical steel. The influence of different ratios of Ca and Ag dopants on morphology, surface structure, corrosion resistance, bioactivity, wettability, and biological properties of TiO2-based sol-gel coatings was studied and discussed. Comprehensive measurements were performed including atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray reflectivity (XRR), corrosion tests, immersion test, contact angle, as well as biological evaluation. The obtained results confirmed that anatase-based coatings containing Ca and Ag ions, independently of their molar ratio in the coating, are anticorrosive, hydrophilic, and bioactive. The results of the biological evaluation indicated that investigated coatings are biocompatible and do not reduce the proliferation ability of the osteoblasts cells.

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Controlled implant/soft tissue interaction by nanoscale surface modifications of 3D porous titanium implants

Nanoscale ◽

10.1039/c5nr01237f ◽

2015 ◽

Vol 7 (21) ◽

pp. 9908-9918 ◽

Cited By ~ 32

Author(s):

Elisabeth Rieger ◽

Agnès Dupret-Bories ◽

Laetitia Salou ◽

Marie-Helene Metz-Boutigue ◽

Pierre Layrolle ◽

...

Keyword(s):

Surface Modification ◽

Soft Tissue ◽

Surface Modifications ◽

Porous Titanium ◽

Titanium Implants ◽

Tissue Response ◽

Soft Tissue Response ◽

Modification Of Titanium

Nanoscale surface modification of titanium microbeads can control the soft tissue response in vitro and in vivo.

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Influence of surface modification of titanium implants on improving osseointegration: An in vitro study

Journal of Prosthetic Dentistry ◽

10.1016/j.prosdent.2021.06.034 ◽

2021 ◽

Author(s):

Mohini Gajiwala ◽

Jyoti Paliwal ◽

Syed Yawer Husain ◽

Ashish Dadarwal ◽

Rajni Kalla ◽

...

Keyword(s):

Surface Modification ◽

In Vitro Study ◽

Titanium Implants ◽

Vitro Study ◽

Modification Of Titanium

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Surface modification of recycled coir fibers with hybrid coating and its effect on the properties of ABS composites

Materials Research Express ◽

10.1088/2053-1591/ac37d4 ◽

2021 ◽

Author(s):

Cai Jiafeng ◽

Qiuying Li ◽

Chifei Wu

Keyword(s):

Tensile Strength ◽

Surface Modification ◽

Bending Strength ◽

Raw Materials ◽

Sol Gel ◽

Fiber Surface ◽

Dip Coating ◽

Hybrid Coating ◽

Single Fibers ◽

Coir Fibers

Abstract In this work, a hybrid coating (TSMA) was produced using tetraethyl orthosilicate (TEOS)/KH550/Styrene maleic anhydride copolymer (SMA) as raw materials. The coating was afterwards applied to modify recycled coir (r-coir) fibers via dip-coating. R-coir fibers reinforced ABS composites were then prepared and the reinforcing effect of fibers on the composite structure was investigated, as well. The r-coir fibers coated with TSMA were hydrolyzed in air for 3 days. The SiO2 particles produced by sol-gel reaction of TEOS were used to connect KH550 and SMA to the surface of the fibers and form an organic-inorganic ‘armor’ structure. The successful surface modification of the r-coir fibers was proved via FTIR spectroscopic study and the improvement of their decomposition temperature was evidenced by TGA. Furthermore, the homogeneous dispersion of TSMA on the surface of r-coir fibers was observed via SEM. In addition, the tensile strength of single fibers was found to increase by 36.1%. According to the results, TSMA can be successfully homogenized on the fiber surface, enabling one to repair the damaged areas and improve the tensile strength of single fibers. Besides, good compatibility between r-coir fibers and ABS was revealed by contact angle measurements. Furthermore, the bending strength and elastic modulus of TSMA-modified r-coir fibers/ABS composites were improved by 6% and 27%, respectively. Therefore, the method of plant fiber modification proposed in present work provides a reliable way for effective reuse of r-coir fibers.

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