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Comparative performance and barrier properties of biodegradable thermoplastics and nanobiocomposites vs. PET for food packaging applications

AutorCava, David; Giménez, Enrique; Gavara, Rafael ; Lagarón Cabello, José María
Palabras claveBiodegradable thermoplastics
Barrier properties
Nanobiocomposites
Food Packaging
PET
PCL
PLA
PHBcoV
Fecha de publicación2005
EditorSociety of Plastics Engineers
CitaciónAnnual Technical Conference - ANTEC, Conference Proceedings May 1-5 2005
ResumenThis article reports on preliminary studies of several comparative packaging properties between polyethylene terephthalate (PET) packaging films and biodegradable biopolymers such as polycarpolactone (PCL), polylacticacid (PLA), amorphous PLA (aPLA), and polyhydroxyalcanoates copolymer with 8 mol% valeriate (PHBV) and of some nanobiocomposites, in terms of thermal and retorting resistance (thermal humid processes) and oxygen, water vapor, aroma, and solvent barrier by means of time-resolved synchrotron radiation, FT-IR and direct permeation methods. This work suggests that while PHBV can easily withstand retorting and shows excellent water and aroma (limonene and linalool) barriers compared with PET, its solvent resistance (toluene and ethanol) and oxygen barrier properties are poorer. First trials with compression molded food contact complying nanobiocomposites of PCL and aPLA show enhanced oxygen barrier but not sufficient, as yet, to outperform high-oxygen-barrier grades of PET film.
URIhttp://hdl.handle.net/10261/3054
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