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. 2019 May 30;11(6):941. doi: 10.3390/polym11060941

Figure 2.

Figure 2

SEM images of poly(lactic acid) (PLA)/polyethylene glycol (PEG) and PLA/PEG/chitosan (CS)/rosemary extract (R) samples at different magnifications: (a) 200 µm; (b) 100 µm; (c) 50 µm and (d) 20 µm indicated on figures.