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. 2019 Nov 26;11(12):1945. doi: 10.3390/polym11121945

Figure 4.

Figure 4

Water vapor permeability values for PLA-based materials (case letters a–e indicate significant differences among the values of permeability of different films at the same RH; letters x,y indicate significant differences among the values of permeability of the same sample at different values of RH).