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Cathodic protection, a conventional technique of protecting metal from corrosion, was used to enable the formation of polypyrrole (PPy) film on biodegradable metal magnesium (Mg). The formation procedure was as follows: first, Mg corrosion was suppressed by applying a negative potential to the Mg cathode; second, oxidant nitrosyl ion (NO + ) was generated on Mg surface through a redox reaction...
For a conducting polymer (CP) based drug release system, drug loading is often accomplished by a doping process, in which drug is incorporated into polymer as dopant. Therefore, the drug loading capacity is relatively low and the range of drugs can be loaded is limited. In the present work, a polypyrrole (PPy) nanowire network is prepared by an electrochemical method and it is found that the micro-...
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