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Biodegradable Conducting Polymer Coating to Mitigate Early Stage Degradation of Magnesium in Simulated Biological Fluid: An Electrochemical Mechanistic Study
The application of a biodegradable conducting polymer coating based on a polythiophene composite (PTC) to mitigate degradation of magnesium in an in vitro environment is reported. The rationale behind the study is to advance a bioactive coating to control the rapid early stage degradation of the magnesium and prevent inflammatory reactions and physiological complications, while, in the long term, the coating degrades, followed by the full degradation of the magnesium implant. The conducting polymer in this study is deposited on a bioabsorbable medical grade magnesium alloy, AZNd, through layer-by-layer deposition, and the degradation behavior in simulated biological fluid is studied electrochemically. The possibility of a synergistic effect by combining praseodymium conversion coating together with the conducting polymer coating in protecting magnesium is also examined. Results show that the highest level of corrosion mitigation is afforded by the combination of praseodymium conversion and the conducting polymer coating layers. Electrochemical models are advanced to explain the electroactivity of the conducting polymer across the film as well as at the interface with electrolyte and substrate. Based on the physical and electrochemical evidence, the barrier effect is proposed as the main protection mechanism.
Biodegradable Conducting Polymer Coating to Mitigate Early Stage Degradation of Magnesium in Simulated Biological Fluid: An Electrochemical Mechanistic Study
Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Quality Control of Ferrocenemethanol, you can also check out more blogs about1273-86-5
Reference£º
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion