Figure 1. SEM micrographs of electrospun NFS in different weight ratios: (a) 3/1 PLLA/PCL, (b) 2/1 PLLA/PCL, and (c) 1/1 PLLA/PCL.

Scale bar  = 50 μm. At the condition of mass flow rate of 1.0 ml/h, electrical field of 20 kV and syringe needle tip-to-collector distance of 15 cm, the PLLA/PCL blends of varied blending weight ratios were electrospun into fibers. The AD of fibers decreased with the increasing PCL content in the blends.