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    Electrophoretically Deposited Chitosan/Eudragit E 100/AgNPs Composite Coatings on Titanium Substrate as a Silver Release System

    Year: 2021

    Journal: Materials, Volume 14, AUG

    Authors: Pawlowski, Lukasz; Bartmanski, Michal; Mielewczyk-Gryn, Aleksandra; Cieslik, Bartlomiej Michal; Gajowiec, Grzegorz; Zielinski, Andrzej

    Keywords: chitosan; Eudragit; AgNPs; electrophoretic deposition; smart coatings

    Due to the possibility of bacterial infections occurring around peri-implant tissues, it is necessary to provide implant coatings that release antibacterial substances. The scientific goal of this paper was to produce by electrophoretic deposition (EPD) a smart, chitosan/Eudragit E 100/silver nanoparticles (chit/EE100/AgNPs) composite coating on the surface of titanium grade 2 using different deposition parameters, such as the content of AgNPs, applied voltage, and time of deposition. The morphology, surface roughness, thickness, chemical and phase composition, wettability, mechanical properties, electrochemical properties, and silver release rate at different pH were investigated. Using lower values of deposition parameters, coatings with more homogeneous morphology were obtained. The prepared coatings were sensitive to the reduced pH environment.
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