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Efficient gas barrier properties of multi-layer films based on poly(lactic acid) and fish gelatin.
- Source :
-
International Journal of Biological Macromolecules . Nov2016, Vol. 92, p1205-1214. 10p. - Publication Year :
- 2016
-
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 (5.02 cm 3 /m 2 day bar) decreased more than 8-fold compared with that of the PLA film, and the WVP of multi-layer film (0.125 g mm/ kPa h m 2 ) 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 ± 2.13 MPa) was greater than that of FG film (7.48 ± 1.70 MPa). 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 T g which decreased with FG deposition. This material exhibits an environmental-friendliness potential and a high versatility in food packaging. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01418130
- Volume :
- 92
- Database :
- Academic Search Index
- Journal :
- International Journal of Biological Macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 118496970
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2016.08.034