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SEM micrographs of blank EL 15% (w/v) NFs prepared at different voltages: (A) 10 kV, (B) 15 kV, (C) 20 kV and (D) 25 kV.
Note: The feeding rate was fixed at 0.5 mL/h.
Abbreviations: SEM, scanning electron microscopy; EL, Eudragit L100; NF, nanofiber.
