Mechanical and thermal behaviour of flexible food packaging polymeric films materials under high pressure/temperature treatments

Galotto, MJ; Ulloa, PA; Hernandez, D; Fernandez-Martin, F; Gavara, R.; Guarda A.

Abstract

The effect of high-pressure processing on mechanical and thermal properties of four complex packaging materials (polyethylenelethylene vinyl alcohol/ polyethylene: PEIEVOHIPE; metallized polyester/polyethylene: PETmetlPE; polyester/ polyethylene: PETIPE; polypropylene SiOx recovered: PPSiOx) was studied. Pouches of the different materials containing distilled water or olive oil as food simulants, as well as empty ones, were subjected to 400 MPa for 30 min, at temperatures of 20 or 60°C. Delamination and wrinkling were a general consequence of the high-pressure processing of multilayer polymeric systems. However, no significant changes were observed regarding the mechanical properties of PE containing laminates after pressurization. PPSiOx underwent significant modifications as SiOx completely broke down. Neither thermal property was affected by pressure, as it was the processing temperature that induced tempering effects on the crystallization behaviour of polymeric components. Only PE/EVOH/ PE, when in contact with water as a simulant, presented a decrease in the melting point temperature.

Más información

Título según WOS: Mechanical and thermal behaviour of flexible food packaging polymeric films materials under high pressure/temperature treatments
Título según SCOPUS: Mechanical and thermal behaviour of flexible food packaging polymeric films materials under high pressure/temperature treatments
Título de la Revista: PACKAGING TECHNOLOGY AND SCIENCE
Volumen: 21
Número: 5
Editorial: Wiley
Fecha de publicación: 2008
Página de inicio: 297
Página final: 308
Idioma: English
URL: http://doi.wiley.com/10.1002/pts.807
DOI:

10.1002/pts.807

Notas: ISI, SCOPUS