Corrosion resistance of Ti modified by chitosan–gold nanoparticles for orthopedic implantation

Farghali, R.A.; Fekry, Amany M.; Ahmed, Rasha; Elhakim, Heba K.A.

doi:10.1016/j.ijbiomac.2015.04.078

Cited by 60 publications

(16 citation statements)

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“…Due to this, the integrity of the coating used as a protective system against corrosion is fundamental. One way to achieve this goal is to strengthen the structure of the protective film by using healing agents, crosslinking agents, and incorporation of corrosion inhibitors or inert particles that block the diffusion of aggressive anions and also improve the adhesion of the coating towards the substrate [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…However, it has been found that electrophoretic deposition of chitosan yields films with better protective properties [6,18]. During the electrophoretic deposition process, macromolecules with high density of positive charge such as chitosan (due to its amine groups) move toward a substrate (cathode) under the influence of an electric field and are precipitated on its surface [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Martı́nez–Gómez

Quinto-Hernandez

Flores-Garcia

et al. 2019

International Journal of Polymer Science

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In this study, the electrophoretic deposition of chitosan films doped with Nd 2 Ti 2 O 7 nanoparticles was carried out as corrosion protection systems for exposed materials in aqueous environments rich in chlorides. Completely crystalline Nd 2 Ti 2 O 7 nanoparticles with an average size of 100-200 nm were obtained. Electrophoretic deposition of chitosan films with Nd 2 Ti 2 O 7 nanoparticles was possible. With a working voltage of 5 V and 20 minutes of deposition, homogenous chitosan films with a thickness of 4 microns were obtained. According to the FT-IR (Fourier transform infrared spectroscopy), Raman, and XRD (X-ray diffraction) analyses, it was observed that the presence of the nanoparticles modified the properties of the chitosan films, that is, their crystallinity was increased and their moisture absorption capacity was reduced. These modifications caused a better performance against the corrosion of chitosan films deposited on 1018 carbon steel. Its electrochemical evaluation showed that the chitosan films perform as cathodic coatings by affecting the oxygen reduction reaction. This was possible due to the barrier effect of the Nd 2 Ti 2 O 7 nanoparticles, by blocking the effective area for the diffusion of the aggressive electrolyte species.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Martı́nez–Gómez

Quinto-Hernandez

Flores-Garcia

et al. 2019

International Journal of Polymer Science

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“…Hence it has become a research hotspot in the development of natural antiseptic antibacterial agents. In addition, CS solution has good film‐forming properties by virtue of its viscosity . Thus it is widely used in the food industry as an excellent film‐forming fresh‐keeping material.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, CS solution has good film-forming properties by virtue of its viscosity. 4 Thus it is widely used in the food industry as an excellent film-forming fresh-keeping material. Mohan et al 5 applied a CS coating for sardine preservation; the results showed that chitosan coating could effectively inhibit bacterial growth and double the shelf life of sardine.…”

Section: Introductionmentioning

confidence: 99%

Preparation, physicochemical and preservation properties of Ti/ZnO/in situ SiOx chitosan composite coatings

Wei

Han

et al. 2019

J Sci Food Agric

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BACKGROUND Among nanomaterials, Ti and ZnO nanoparticles are often chosen as preservation materials because of their antibacterial properties. Chitosan, as a natural biopolymer, has potential because of its abundance, compatibility and antibacterial properties. To improve the physicochemical and preservation properties of in situ SiOx chitosan (CS) composite coating, Ti/ZnO/SiOx CS composite coatings were prepared with Ti‐doped ZnO (Ti/ZnO) nanorods and nanoballs. The composite coating structures were characterized by Fourier transform infrared, X‐ray diffraction and scanning electron microscopy, and their physicochemical and preservation properties were determined simultaneously. RESULTS The results show that the Ti/ZnO nanoparticles are beneficial to homogeneous dispersion of in situ synthesized nano SiOx in the CS coating, and that Ti/ZnO nanoballs have better dispersion than Ti/ZnO nanorods. Moreover, strong hydrogen bonds are formed among Ti/ZnO nanoparticles and in situ synthesized nano SiOx and CS molecules, and the primary structure of CS is disorganized. Thereby, the gas permeabilities and mechanical properties of the CS coatings are improved due to modification of Ti/ZnO nanoparticles, and the Ti/ZnO nanoballs/SiOx CS composite coating is optimal. The preservation properties of the CS coatings on Sciaenops ocellatus are significantly improved, and those of Ti/ZnO/in situ SiOx CS composite coatings are superior. CONCLUSION The preservation properties of the CS composite coatings on S. ocellatus are significant, and the Ti/ZnO nanoballs/SiOx CS composite coating is even better. Therefore, the co‐modification method of in situ nanoparticles and antibacterial nanoparticles may be a promising method to improve the preservation properties of CS coatings. © 2019 Society of Chemical Industry

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“…Different CHI-based materials were also successfully used in bone tissue engineering applications 19 20 21 . Some research studies report on CHI use as a coating either alone or in combination with other components in settings, where corrosion inhibition was required 22 23 . Several studies have also proven the potential of CHI to be used either as part or as pure source of mechanically stable bone tissue engineering scaffolds 19 20 21 .…”

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confidence: 99%

Novel chitosan/diclofenac coatings on medical grade stainless steel for hip replacement applications

Finšgar

Uzunalić

Stergar

et al. 2016

Sci Rep

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Corrosion resistance, biocompatibility, improved osteointegration, as well the prevention of inflammation and pain are the most desired characteristics of hip replacement implants. In this study we introduce a novel multi-layered coating on AISI 316LVM stainless steel that shows promise with regard to all mentioned characteristics. The coating is prepared from alternating layers of the biocompatible polysaccharide chitosan and the non-steroid anti-inflammatory drug (NSAID), diclofenac. Electrochemical methods were employed to characterize the corrosion behavior of coated and uncoated samples in physiological solution. It is shown that these coatings improve corrosion resistance. It was also found that these coatings release the incorporated drug in controlled, multi-mechanism manner. Adding additional layers on top of the as-prepared samples, has potential for further tailoring of the release profile and increasing the drug dose. Biocompatibility was proven on human-derived osteoblasts in several experiments. Only viable cells were found on the sample surface after incubation of the samples with the same cell line. This novel coating could prove important for prolongation of the application potential of steel-based hip replacements, which are these days often replaced by more expensive ceramic or other metal alloys.

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Corrosion resistance of Ti modified by chitosan–gold nanoparticles for orthopedic implantation

Cited by 60 publications

References 50 publications

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Preparation, physicochemical and preservation properties of Ti/ZnO/in situ SiOx chitosan composite coatings

Novel chitosan/diclofenac coatings on medical grade stainless steel for hip replacement applications

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Corrosion resistance of Ti modified by chitosan–gold nanoparticles for orthopedic implantation

Cited by 60 publications

References 50 publications

Electrophoretic Deposition of Chitosan Films Doped with Nd2Ti2O7Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Electrophoretic Deposition of Chitosan Films Doped with Nd2Ti2O7Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Preparation, physicochemical and preservation properties of Ti/ZnO/in situ SiOx chitosan composite coatings

Novel chitosan/diclofenac coatings on medical grade stainless steel for hip replacement applications

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Product

Resources

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Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions