Preparation and characterization of chitosan / graphene oxide nanocomposite coatings on Mg–2 Wt. % Zn scaffolds by pulse electro deposition process
Paper ID : 1563-ICNS
Authors:
mohammad ranjbar1, Fatemeh Saeedi1, Arash Montazeri *2, Malihe pishvaei3
1Department of Nanotechnology, University of guilan , Rasht, Guilan, Iran
2Nano Technology Department,Faculty of Engineering,guilan university,Rasht,Guilan
3Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran
Abstract:
Mg and its alloys are biodegradable, mechanically strong, and promising for an orthopedic implant and device applications. However, currently available degrade too rapidly to meet clinical needs. The objective of this study is to investigate the effect of graphene oxide (GO) different percentages on corrosion properties of chitosan coatings onto three-dimensional magnesium Mg-2Zn scaffold to control degradation and promote bone ingrowth. The pulse electrodeposition technique was used for the production of nanocomposites coatings. The porous Mg–2Zn alloys were prepared using a powder metallurgy process. The coating microstructure and morphologies were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). Zeta potential test was used for dispersion of GO in the Chitosan matrix. The potentiodynamic polarization test in simulated body fluid (SBF) indicated that the CS/GO coatings could provide effective protection of Mg–2Zn from corrosion.
Keywords:
Chitosan; Graphene oxide; Mg-2Wt.%Zn scaffold;Nanocomposite coatings;Corrosion
Status : Abstract Accepted (Poster Presentation)