Figure 4.
SEM images of the fractured surfaces of: (a) PVA; (b) PVA/GS1; (c) PVA/GS2; (d) PVA/GLY; (e) PVA/GS1/GLY; (f) PVA/GS2/GLY; and (g) PVA/GS1 ex situ.
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