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. 2022 Aug 28;14(17):3530. doi: 10.3390/polym14173530

Figure 1.

Figure 1

Morphology of the PLA feedstock: (a) Optical microscopy image of PLA pellets; (b) X-CT two-dimensional image of the internal structure of PLA pellets. The blue points represent internal microporosities of volume lower than 0.001 mm3.