Electrophoretic deposition of anisotropic α-Fe2O3/PVP/chitosan nanocomposites for biomedical applications

Electrophoretic deposition (EPD) has been used to fabricate composite coatings based on anisotropic hematite particles (α-Fe2O3) comprising residual poly-N-vinyl-pyrrolidone (PVP) and chitosan (CHT) on stainless steel substrates. The experimental conditions towards homogeneous surface, non-delamination and good distribution of α-Fe2O3/PVP particles are described. The coatings were characterized by SEM, XRD and TGA. A molecular interaction between PVP adsorbed on the surface of the particles and CHT is identified.