Table 2.

Total thickness and permeance to water and limonene vapors and oxygen of the polylactide (PLA), M1, and M2 multilayer films.

Film	Thicknesses (µm)	Water Vapor Permeance × 1011 (kg.m−2.Pa−1.s−1)	Limonene Permeance × 1010 (kg.m−2.Pa−1.s−1)	Oxygen Permeance × 1014 (m3.m−2.Pa−1.s−1)
PLA	20 ± 1 a	92.59 ± 5.82 a	2.20 ± 0.17 a	11.54 ± 2.02 a
M1	137 ± 3 b	0.58 ± 0.40 b	1.51 ± 0.14 b	0.02 ± 0.00 b
M2	98 ± 2 c	2.32 ± 1.67 c	0.69 ± 0.04 c	0.97 ± 0.03 c

^a–c Different superscript letters within the same column indicate significant differences among the samples (p < 0.05).