title: Efficient gas barrier properties of multi-layer films based on poly(lactic acid) and fish gelatin.
abstract: Multi-layer film structures of poly(lactic acid) (PLA) and fish gelatin (FG), prepared using the solvent casting technique, were studied in an effort to produce bio-based films with low oxygen (OP) and water vapor permeability (WVP). The scanning electron microscopy (SEM) images of triple-layer film showed that the outer PLA layers are being closely attached to the inner FG layer to make continuous film. The OP of multi-layer film (5.02cm3/m2daybar) decreased more than 8-fold compared with that of the PLA film, and the WVP of multi-layer film (0.125gmm/kPah m2) also decreased 11-fold compared with that of the FG film. Lamination with PLA profoundly increased the water resistance of the bare gelatin film. Meanwhile, the tensile strength of the triple-layer film (25±2.13MPa) was greater than that of FG film (7.48±1.70MPa). At the same time, the resulting film maintains high optical clarity. Differential scanning calorimetry (DSC) analysis also revealed that the materials were compatible showing only one Tgwhich decreased with FG deposition. This material exhibits an environmental-friendliness potential and a high versatility in food packaging.
authors.affiliation: Department of Seafood Processing, Faculty of Marine Sciences, Tarbiat Modares University, P.O. Box 46414-356, Noor, Iran. Electronic address: hosseinisf@modares.ac.ir.
authors.forename: Seyed Fakhreddin
authors.initials: SF
authors.lastname: Hosseini
authors.affiliation: Department of Seafood Processing, Faculty of Marine Sciences, Tarbiat Modares University, P.O. Box 46414-356, Noor, Iran.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Javidi
authors.affiliation: Department of Seafood Processing, Faculty of Marine Sciences, Tarbiat Modares University, P.O. Box 46414-356, Noor, Iran.
authors.forename: Masoud
authors.initials: M
authors.lastname: Rezaei
mesh_terms: D000818:Animals; D005399:Fishes; D018857:Food Packaging; D005780:Gelatin / Q000737:chemistry* / Q000302:isolation & purification / Q000648:ultrastructure; D055772:Green Chemistry Technology / Q000379:methods; D006801:Humans; D010100:Oxygen / Q000737:chemistry*; D010539:Permeability; D011091:Polyesters / Q000737:chemistry*; D012867:Skin / Q000737:chemistry; D013227:Steam / Q000032:analysis*; D013718:Tensile Strength
chemical_list: D011091:Polyesters; D013227:Steam; C015233:gelatin film; C033616:poly(lactide); D005780:Gelatin; D010100:Oxygen
keywords: Film properties; Fish gelatin; Multi-layer film; Oxygen permeability; Poly (lactic acid); Water vapor permeability