A blown web layer made of a commercial PBAT/PLA blend (Biofilm) with the trade name BioterTM (Euromaster S.p.a., Pistoia, Italy) was chosen as the substrate.
Exceval AQ-4104 is a polyvinyl alcohol modified with ethylenic insertions that exhibits a low gas barrier from dry conditions to approximately 55% relative humidity (RH%), according to the technical data provided by the manufacturer. It is totally hydrolyzed (98.0–99.0 mol%), chlorine-free, and water-soluble, and it has received FDA approval for food-contact use. The polymer will be hereafter named m-PVOH.
PLA4060D (amorphous, D-isomer concentration = 12 wt%, Mw 190,000 g/mol, specific gravity = 1.24 g/cm3) was provided by Natureworks (Minnetonka, MN, USA).
Deurex (Elsterau, Germany) supplied the Ethylene-bis-Stearamide (EBS) wax X2010M (CAS 110–30-5), produced by revaluing sugar cane residues. The wax is approved for the production of commodities intended to come into contact with food, according to the EU Regulation 10/2011 and the FDA 21 CFR [37 ], and is classified as a no-hazard substance by the European Chemicals Agency (ECHA) [38 ]. Analytical-grade solvents were utilized throughout.
Exceval AQ-4104 is a polyvinyl alcohol modified with ethylenic insertions that exhibits a low gas barrier from dry conditions to approximately 55% relative humidity (RH%), according to the technical data provided by the manufacturer. It is totally hydrolyzed (98.0–99.0 mol%), chlorine-free, and water-soluble, and it has received FDA approval for food-contact use. The polymer will be hereafter named m-PVOH.
PLA4060D (amorphous, D-isomer concentration = 12 wt%, Mw 190,000 g/mol, specific gravity = 1.24 g/cm3) was provided by Natureworks (Minnetonka, MN, USA).
Deurex (Elsterau, Germany) supplied the Ethylene-bis-Stearamide (EBS) wax X2010M (CAS 110–30-5), produced by revaluing sugar cane residues. The wax is approved for the production of commodities intended to come into contact with food, according to the EU Regulation 10/2011 and the FDA 21 CFR [37 ], and is classified as a no-hazard substance by the European Chemicals Agency (ECHA) [38 ]. Analytical-grade solvents were utilized throughout.