Corrosion resistance of Ti6Al4V alloy coated with caprolactone-based biodegradable polymeric coatings

Kajzer, W.; Jaworska, Joanna; Jelonek, Katarzyna; Szewczenko, Janusz; Kajzer, Anita; Nowińska, Katarzyna; Hercog, Anna; Kaczmarek, Marcin; Kasperczyk, Janusz

doi:10.17531/ein.2018.1.5

Cited by 19 publications

(16 citation statements)

References 17 publications

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“…This remodelling indicates the progressive degradation of the polymer coatings, and thus the increasing contact of the metal substrate with the surrounding corrosive environment. The effectiveness of limiting the degradation of the metal substrate by polymer coatings has been confirmed in studies of the concentration of ions releasing into Ringer's solution [9]. Compared to the concentration of metal ions permeating the substrate in the case of polymer coatings regardless of their type as well as the method of obtaining, a reduction in the number of ions was observed (Table 4).…”

Section: Discussionmentioning

confidence: 81%

“…6). Moreover, in the 1.5 to 2 V potential range for the samples after 1, 2 and 3-month exposure, a distinct increase in the current density was observed [9]. The increase in current density in this potential range is related to the remodelling of the oxide layer on the surface of the Ti alloy.…”

Section: Discussionmentioning

confidence: 85%

“…One of the methods of surface modification of metal biomaterials may be the use of polymer coatings. They improve the biotolerance of implants, and when using biodegradable polymers they can be a matrix for the release of active substances [9], [10], [20]. The use of suitable polymers with known degradation kinetics can be used for the controlled release of active substances [17], [18], [23].…”

Section: Introductionmentioning

confidence: 99%

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Biodegradable polymer coatings on Ti6Al7Nb alloy

Szewczenko¹,

Kajzer²,

Kajzer³

et al. 2019

Acta Bioeng Biomech

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The aim of the study was to determine the influence of long term exposure to Ringer's solution of biodegradable polymer coatings containing an active substance on the Ti6Al7Nb alloy substrate on the physical and chemical properties of the coatings and the degradation process of the metal substrate. The studies used poly(L-lactide-co-trimethylene carbonate) P(L/TMC), poly(L-lactide-co-trimethylene carbonate-glycolide) P(L/TMC/G) and poly(D,L-lactide-glycolide) (PLGA) coatings applied to the anodically oxidized Ti6Al7Nb alloy by means of dipping method (1, 2 and 3 dips). The polymer coatings contained ciprofloxacin. Roughness and wettability tests were carried out on the substrate and polymer coatings, the pitting corrosion resistance of the substrate and samples with polymer coating was determined, the number of metallic ions released to the solution from the coated and uncoated samples was determined as well as the adhesion of polymer coatings. The research was supplemented by microscopic observations. The results of the research indicate different influence of exposure to Ringer's solution on the physical and chemical properties of biodegradable polymer coatings containing ciprofloxacin and the course of the degradation process of the metal substrate.

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Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biodegradable polymer coatings on Ti6Al7Nb alloy

Szewczenko¹,

Kajzer²,

Kajzer³

et al. 2019

Acta Bioeng Biomech

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“…This proved that the applied polymer coatings constituted a protective barrier that limited the release of the degradation products of the metal substrate into the Ringer's solution. Preliminary studies of the authors showed a beneficial effect of reducing the mass density of metal ions by biodegradable polymer coatings, which were applied on stainless steel Ti6Al4V and Ti6Al7Nb alloys; however, the applied surface treatment parameters were different than the ones used in the present study [39,47,48]. In the previous work, concerning the PLGA coating (10% w/w) [48], the influence of the number of dips in the process of applying polymer coatings on the mass density of ions releasing into the solution was also observed.…”

Section: Biological Test Resultsmentioning

confidence: 99%

Electrochemical and Biological Performance of Biodegradable Polymer Coatings on Ti6Al7Nb Alloy

et al. 2020

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The inhibition of the corrosion of metal implants is still a challenge. This study aimed to increase the corrosion resistance of Ti6Al7Nb alloy implants through surface modification, including grinding, sandblasting, and anodic oxidation followed by the deposition of a polymer coating. The aim of the work was to determine the influence of biodegradable polymer coatings on the physico-chemical properties of a Ti6Al7Nb alloy used for short-term implants. Biodegradable coatings prepared from poly(glycolide-caprolactone) (P(GCap)), poly(glycolide ε-caprolactone-lactide) (P(GCapL)), and poly(lactide-glycolide) (PLGA) were applied in the studies. The dip-coating method with three cycles of dipping was applied. Corrosion resistance was assessed on the basis of potentiodynamic studies. The studies were carried out on samples after 30, 60, and 90 days of exposure to Ringer's solution. Surface topography, wettability, and cytotoxicity studies were also carried out. The degradation process of the base material was evaluated on the basis of the mass density of the metal ions released to the solution. The results indicated the influence of the coating type on corrosion resistance. In addition, a beneficial effect of the polymer coating on the reduction of the density of the released metal ions was found, as compared to the samples without polymer coatings. The obtained results provide basic knowledge for the development of polymer coatings enriched with an active substance. The presence of ciprofloxacin in the coating did not reduce the corrosion resistance of the metal substrate. Moreover, the cytotoxicity test using the extract dilution method demonstrated that the implants' coatings are promising for further in vitro and in vivo studies.The extensive use of biodegradable polymers in medical applications is mainly associated with the possibility of tailoring their physicochemical and mechanical properties. Controlled polymer degradation allows for their use as carriers of medicinal substances, ensuring drug release with regulated dynamics to obtain the expected therapeutic effects [5]. The mentioned group of biopolymers is characterized by an appropriate biocompatibility [4], and the achieved degradation products-mainly lactic, glycolic, and hydroxyhexanoic acids-are found to be neutral to the human organism and are metabolized in accordance the Krebs cycle [6]. The basic limitation of the use of biodegradable polymers relates to the mechanical properties that change over time. This feature may be disadvantageous in some applications, e.g., orthopedic implants. Treatment disorders can be observed as the implant weakens due to degradation processes. This can lead to repeated injuries. The consequence of this is the need to perform a revision surgery combined with the removal of an incompletely degraded and mechanically weakened implant and followed by its replacement with a new one. The revision surgery due to the progressive degradation of the polymer material may be associated with serious difficulties that lead to a much ...

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“…In the field of orthopedics and in dental prosthetics, titanium found a wide range of applications [ 6 , 7 ]. Its high corrosion resistance is attributed to passive layers consisting of amorphous TiO 2 , formed on the surfaces [ 8 , 9 , 10 ]. It may be characterized as a very difficult-to-cut material due to its endurance and relative elongation (6–15%).…”

Section: Introductionmentioning

confidence: 99%

Effect of Yttrium and Rhenium Ion Implantation on the Performance of Nitride Ceramic Cutting Tools

et al. 2020

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In the paper, the results of experimental investigations of ion implanted cutting tools performance are presented. The tools, made out of Si3N4 with additives typically used for turning of Ti-6Al-4V alloy, underwent implantation with ions of yttrium (Y+) and rhenium (Re+) using the metal vapor vacuum arc method. Distribution of ions on the tool surface was measured. The cutting tools were tested in turning process with measurement of cutting forces and analysis of wear. A rather unexpected result was the increased wear of the tool after Y+ implantation with 1 × 1017 ion/cm2. It was demonstrated, however, that the tool after Y+ 2 × 1017 ion/cm2 ion implantation provided the best machining performance.

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Corrosion resistance of Ti6Al4V alloy coated with caprolactone-based biodegradable polymeric coatings

Cited by 19 publications

References 17 publications

Biodegradable polymer coatings on Ti6Al7Nb alloy

Biodegradable polymer coatings on Ti6Al7Nb alloy

Electrochemical and Biological Performance of Biodegradable Polymer Coatings on Ti6Al7Nb Alloy

Effect of Yttrium and Rhenium Ion Implantation on the Performance of Nitride Ceramic Cutting Tools

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