Electrophoretic deposition of bioactive glass composite coating on biomaterials and electrochemical behavior study: A review

We synthesised the new initiator,N-methyl bis [(nonafluorobutane) sulfonyl] imide (Nf2NMe) for 2-oxazolines derived from bis [(nonafluorobutane) sulfonyl] imide (Nf2NH). Also we compared activity of initiator of Nf2NMe with methyl triflate (TfOMe) and whether it was living polymerization. Furtheremore, not only we synthesized new initiator (Nf2NMe) for 2-oxazolines and evaluated it, but also we created a new hybride with a bioactive glass (Bioglass®45S5) by electrophoretic deposition (EPD) because poly (2-oxazoline) s have biocompatibility. Subsequently, we immersed the poly (2-oxazoline) s / bioactive glass composite film made by EPD in simulated body fluid (SBF) to form the hydroxyapatite.

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Hydroxyapatite and Bioactive Glass Composite Coating on Ti6Al4V

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.330-332.589 ◽

2007 ◽

Vol 330-332 ◽

pp. 589-592

Author(s):

Rui Lin Du ◽

Shao Xian Zeng ◽

Yu Huai Wu ◽

Xing Hui Xie

Keyword(s):

Bioactive Glass ◽

Composite Coating ◽

Bonding Strength ◽

Bone Substitutes ◽

Glass Composite ◽

Metal Implants ◽

Result Show ◽

Good Potential ◽

Spraying Method ◽

Electronic Microscope

Hydroxyapatite (HA) was widely used as coating on metals and alloys to enhance the interconnection between metal implants and bone. To improve the bonding strength and bioactivity, in this work, bioactive glass (G) was added and HA-G composite coating was prepared on Ti-6Al-4V at low temperature. The scanning electronic microscope (SEM) graphs showed that the surface of the coating was composed with needle-like crystals, and the X-ray diffractometer (XRD) and Fourier transform infra-red spectrometry (FTIR) results proved that the crystals was carbonate hydroxyapatite (CHA), no other crystal phase was detected. The SEM micrographs of the cross section showed that the coating was porous and bonded closely with the surface of the alloy. The energy diffraction spectra (EDS) result show that a Si-Ti-Al-V-O layer was formed at the interface and enhance the interconnection between the coating and alloy. The bonding strength of the coating was 34.8±6.8MPa, which was much higher than that of the pure HA coating on Ti-6Al-4V prepared by plasma spraying method. The HA-G composite coating on Ti-6Al-4V showed high bonding strength, porous structure, and bone like CHA composition, which has good potential to be used as bone substitutes.

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Electrochemical behavior of nanostructured TiO2/alginate composite coating on magnesium alloy AZ91D via electrophoretic deposition

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2015.01.007 ◽

2015 ◽

Vol 265 ◽

pp. 212-217 ◽

Cited By ~ 18

Author(s):

Luis Cordero-Arias ◽

Aldo R. Boccaccini ◽

Sannakaisa Virtanen

Keyword(s):

Magnesium Alloy ◽

Composite Coating ◽

Electrophoretic Deposition ◽

Electrochemical Behavior ◽

Nanostructured Tio2 ◽

Alloy Az91d

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Electrophoretic Deposition and Characterization of Chitosan/45S5 Bioactive Glass Composite Coatings on Porous Titanium for Biomedical Applications

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.654.189 ◽

2015 ◽

Vol 654 ◽

pp. 189-194 ◽

Cited By ~ 8

Author(s):

S. Borjas ◽

E.J. Gil ◽

L. Cordero ◽

J.J. Pavón ◽

J.A. Rodriguez-Ortiz ◽

...

Keyword(s):

Bioactive Glass ◽

Electrophoretic Deposition ◽

Composite Coatings ◽

High Vacuum ◽

Processing Parameters ◽

Porous Titanium ◽

Glass Composite ◽

Set Up ◽

Titanium Structure

Porous titanium samples of cp Ti grade IV were obtained by space-holder technique (50%vol of NH4HCO3, 800 MPa, 1250 oC during 2h in high vacuum), producing a good balance between stiffness and mechanical strength. The samples were coated with chitosan/45S5 bioactive glass composite by electrophoretic deposition. Homogeneity, infiltration efficiency, and coatings integrity (cracking and adhesion) were evaluated in order to establish correlations with processing parameters. SEM, FTIR, and contact profilometry were performed for detailed characterization of the coatings; and micro-mechanical properties (P-h curves and scratch testing) were set-up as well. Optimum EPD parameters were 25V, 7 min and suspension containing 0.5 g/L chitosan and 1.5 g/L BG a titanium structure with pore sizes greater than 200 μm are required.

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Characterisation of Calcium Phosphate Cement-Derived Hydroxyapatite Scaffolds with a PLGA-Bioactive Glass Composite Coating

Journal of Biomimetics Biomaterials and Tissue Engineering ◽

10.4028/www.scientific.net/jbbte.1.99 ◽

2008 ◽

Vol 1 ◽

pp. 99-107 ◽

Cited By ~ 3

Author(s):

D.M.F. Tan ◽

X. Miao ◽

J. Li ◽

Yin Xiao ◽

Ross Crawford

Keyword(s):

Calcium Phosphate ◽

Bioactive Glass ◽

Composite Coating ◽

Calcium Phosphate Cement ◽

Average Pore Size ◽

Total Porosity ◽

Fibroblast Cells ◽

Glass Composite ◽

Average Pore ◽

Materials Used

The limitations of autogenic, allogenic and xenogenic grafting methods have led to the development of synthetic grafts as an alternative. The aim of this study was to manufacture highly porous and well interconnected hydroxyapatite scaffolds and modify them with a poly(lactic-co-glycolic acid) (PLGA)-bioactive glass composite coating to achieve mechanical properties close to those of natural cancellous bones. In this study, hydroxyapatite scaffolds were prepared from a calcium phosphate cement (CPC) powder and cell culture using fibroblast cells was done to examine the cytotoxicity of the materials used for the scaffolds. The average pore size of the scaffolds was found to be 650μm and the total porosity was about 80%. The hydroxyapatite scaffolds without the coating had a mean compressive strength and a mean compressive modulus of 0.74 MPa and 20.46 MPa, respectively, which were in contrast to those of the scaffolds coated with the PLGA-bioacitve glass composite material (1.36 MPa and 24.58 MPa, respectively). The fibroblast cells were observed to proliferate well on the PLGA-bioactive glass coated scaffolds. The cells had also penetrated into the scaffold to a depth of approximately 2mm. Thus the scaffolds fabricated in this study exhibited a favourable porous structure and good cell response which are desirable for bone tissue engineering.

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