Preparation of Core−Shell Structured PCL-r-Gelatin Bi-Component Nanofibers by Coaxial Electrospinning

A TEM image of core−shell structured bi-component nanofiber produced by a coaxial electrospinning technique. The core and shell are polymers of gelatin and PCL, respectively. Variation of inner concentration during such a spinning process also resulted in tunable amount of gelatin encapsulated in the PCL-r-gelatin bi-component nanofibers.