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. Author manuscript; available in PMC: 2014 Dec 18.
Published in final edited form as: Chem Eng Sci. 2013 Sep 18;104:10.1016/j.ces.2013.09.020. doi: 10.1016/j.ces.2013.09.020

Fig. 3.

Fig. 3

SEM of electrosprayed composite microspheres prepared using different core and shell polymer concentrations. The nozzle voltage (4.5 kV), the core/shell flow rates ((a) to (b): 0.5/2.5 ml/h; (c) to (d): 1.0/5.0 ml/h) and the nozzle-to-collector distance (15 cm) were maintained. Scale bar = 25 μm.