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. 2021 Sep 30;13(19):3368. doi: 10.3390/polym13193368

Figure 7.

Figure 7

SEM images showing a decrease of air voids in printed PLA after adding low molecular weight polymer: (a) Neat PLA and (b) PLA-3%LMW polymer (scale bars equal 100 mm). Reprinted with permission from Ref. [55]. 2018, Elsevier.