Electrophoretic deposition of graphene oxide-chitosan films on titanium implants
Paper ID : 1194-ICNS
Authors:
Fereshteh Moharramzadeh *1, Abdolreza Simchi2
1Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
2Department of Materials Science and Engineering, Sharif University of Technology, Tehran, 14588, Iran
Abstract:
In this study, chitosan- graphene oxide composite coatings were deposited on titanium implants by electrophoretic deposition (EPD). Effect of graphene oxide nanosheets on the deposition rate was studied. The obtained experimental 5results were analysed by the electrophoretic kinetic model proposed by Hamaker and Agustin. It was found that the slope of deposited mass-time graphs is increased with the graphene oxide concentration, which is in agreement with mentioned kinetic model. All deposited mass-time plots were approximately linear in experiment time range. The results indicate that the film thickness increases linearly at the early stage but gradually decreases at prolonged time. Moreover, graphene oxide nanosheets increases the deposited mass. Scanning electron microscopy showed that the surface of the films was rough. The surface became rougher with increasing the graphene oxide concentration. Particularly, at the concentration of 0.5 g/l graphene oxide, the surface is very rough due to crossing of the nanosheets with the surface.
Keywords:
Surface modification; Electrodeposition; Deposition rate; Biomedical implant
Status : Abstract Accepted (Poster Presentation)