Performance of Poly(lactic acid) Surface Modified Films for Food Packaging Application
AbstractFive Poly(lactic acid) (PLA) film samples were analyzed to study the gas barrier behavior, thermal stability and mechanical performance for food packaging application. O2, CO2, N2, N2O, and C2H4 pure gases; Air; and Modified Atmosphere (MA, 79% N2O/21% O2) were used to analyze the influence of the chemical structure, storage temperature and crystalline phase on the gas barrier behavior. The kinetic of the permeation process was investigated at different temperatures, ranging from 5 °C to 40 °C. Annealing thermal treatment on the samples led to the crystalline percentage, influencing especially the gas solubility process. Thermal properties such as Tg and χc, and mechanical properties such as tensile strength and modulus were remarkably improved with surface PLA modification. A more pronounced reinforcing effect was noted in the case of metallization, as well as improved gas barrier performance. Tensile testing and tensile cycling tests confirmed the rigidity of the films, with about a 20% loss of elasticity after 25 cycles loading. View Full-Text
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Siracusa, V.; Dalla Rosa, M.; Iordanskii, A.L. Performance of Poly(lactic acid) Surface Modified Films for Food Packaging Application. Materials 2017, 10, 850.
Siracusa V, Dalla Rosa M, Iordanskii AL. Performance of Poly(lactic acid) Surface Modified Films for Food Packaging Application. Materials. 2017; 10(8):850.Chicago/Turabian Style
Siracusa, Valentina; Dalla Rosa, Marco; Iordanskii, Alexey L. 2017. "Performance of Poly(lactic acid) Surface Modified Films for Food Packaging Application." Materials 10, no. 8: 850.
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