PLGA/Nano-ZnO Composite Particles for Use in Biomedical Applications: Preparation, Characterization, and Antimicrobial Activity

Figure 3

(A) Representative SEM images of PLGA/nano-ZnO particles prepared with acetone and dried at room temperature (bars 0,5 μm, 1 μm, and 5 μm). (B) Representative SEM images of PLGA/nano-ZnO particles prepared with ethyl acetate and dried at room temperature (bars 2 μm, 5 μm, and 5 μm). (C) Representative SEM images of PLGA/nano-ZnO particles prepared with acetone and freeze-dried (bars 0,5 μm, 2 μm, and 5 μm).