Fabrication and characterization of 3D scaffolds made from blends of sodium alginate and poly(vinyl alcohol)

•3D printed scaffolds of sodium alginate (SA) and poly(vinyl alcohol) (PVA) blended hydrogels were fabricated•Physically inter-penetrated crosslinking maintained the scaffold structure.•The mechanical properties of the scaffold were controlled using 3D printing with additional processing.•The size of micro-pores on the strands of the scaffold was easily controlled by the SA/PVA ratio and lyophilization.