Fig. 2. Core/shell architecture of emulsion electrospun fibers.
Transmission scanning microscopy images of Eudragit® L100/BSA electrospun fibers from A) 5% aqueous phase, scale bar 1 μm, and B) 20% aqueous phase, scale bar 2 μm, emulsions. * indicates the location of an aqueous core. Fluorescence microscopy images of Eudragit® L100/FITC-BSA electrospun fibers from C) a 5% aqueous phase emulsion, scale bar 50 μm and D) a 20% aqueous phase emulsion, scale bar 10 μm.