Fig. 4
From: Structural decay of poly(ethylene terephthalate) by enzymatic degradation
SEM images of PET film before (A and B) and after degradation for 26.5 h (C and D). The scale bars indicate 10 μm, except for (B), where it represents 1 μm. A and B: PET before degradation at magnifications of ×1000 (A) and ×10,000 (B). Largely degraded part of the PET film observed at a magnification of ×1000 in the top view (C) and side view from the edge (D)
