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Fully bio‐based polyamide 11 (PA11) was melt‐blended with poly(vinyl alcohol) (PVA) with varying degrees of polymerization (DP) to prepare PA11xPVAzy. The PA11xPVAzy films demonstrated the lowest oxygen transmission rates (OTR) and free volume characteristics, when PVA contents of each PA11xPVAzy series reached a corresponding critical concentration. The minimum OTR and free volume characteristics...
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