Fig. 3.

SEM image of aligned fibers (a) PCL and (b) PLGA collected from a rotation drum. An arrow indicates the drum rotating direction. Scale bar=100 μm. Distribution plots of (c) PCL and (d) PLGA fiber alignment from the acquired SEM images. (e) Correlation of tensile stress – Young׳s modulus for aligned blank PCL/PLGA fibers showing effects of polymer composition and fiber alignment (collected from a rotation drum) on their mechanical properties. Within the upper and lower boundaries, fiber mechanical properties are tunable through fiber composition and fiber alignment.