Thermoformable high oxygen barrier multilayer EVOH/LDPE film/foam | Zendy

Souza Claudio | Zendy; Feng Jingxing | Zendy; Olah Andrew | Zendy; Wnek Gary | Zendy; Baer Eric | Zendy

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Thermoformable high oxygen barrier multilayer EVOH/LDPE film/foam

Author(s) -

Souza Claudio,

Feng Jingxing,

Olah Andrew,

Wnek Gary,

Baer Eric

Publication year - 2020

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.48903

Subject(s) - thermoforming , materials science , composite material , low density polyethylene , ultimate tensile strength , polyethylene , oxygen , copolymer , polymer , chemistry , organic chemistry

The effect of the number of layers on oxygen transmission and thermoformability of novel multilayer film/foam materials was investigated. Ethylene‐vinyl alcohol copolymer/low‐density polyethylene multilayered film/foam composites having 16, 32, and 64 alternating layers were developed using continuous multilayer coextrusion process, and the morphology, density, oxygen transmission, and mechanical properties of the as‐extruded film/foams were characterized. Tensile properties of the film/foams at elevated temperatures were used to optimize thermoforming conditions. Uniaxial orientation was discovered as an efficient approach to evaluate the potential for thermoforming. Oxygen transmission showed a strong correlation with the thickness reduction which could be used as an indicator for barrier properties of the packaging materials. Film/foam materials with 32 layers demonstrated optimum performance with low oxygen transmission along with high drawing capability. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48903.

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