The Influence of Chitosan on Adhesion of Silver Oxide Nanoparticles Coating on SS 316L in Biomedical Applications
Author(s): Dhuha A Al-Ali*, D Al Groosh and Makarim H Abdulkareem
Abstract
The stainless-steel alloys; particularly 316L; are the major metallic alloys to be used in biomedicine due to their superior characteristics. Surface engineering is the process equipped successfully with stainless steel to be used as a functional biomaterial. The purpose of this study is to establish the better parameters (concentration, voltage and time) with electrophoretic deposition (EPD) method of coating to form a layer of silver oxide nanoparticles, to get benefit of its antimicrobial effect in biomedicine; with chitosan as a binder based on microstructure and adhesion of the coated layer; in addition to XRD analysis to evaluate the phases before and after coating. The materials used were stainless steel 316L as a substrate, silver oxide nanoparticles, chitosan and citric acid and ethanol alcohol as a solvent. The EPD coating method was performed using different parameters (concentration, time, and voltage) with various values at room temperature, and the examination of the treated samples under light microscope and adhesion test revealed the best concentration was 7.5 g/L, the voltage was 30 V and the deposition time was 2mins. The coated samples were examined using XRD that showed no phases transformation. The results are promising in medical field since the EPD is a cost effective and easily applied coating procedure.