Electrospun core-shell nanofibers from homogeneous solution of poly(vinyl alcohol)/bovine serum albumin

► BSA blended PVA core-shell nanofibers was prepared from homogeneous polymer solution. ► Easy preparation without any complex electro spinning setup. ► Desirable biocompatibility without any post-treatment for the BSA outer layer. ► Controllable core-shell structure can be obtained by varying the process parameters.