Effect of electron beam irradiation on the properties of polylactic acid/montmorillonite nanocomposites for food packaging applications
| Autor: | Suresh D. Pillai, Donatella Duraccio, Marcella Salvatore, Sossio Cimmino, Shima Shayanfar, Clara Silvestre, Antonella Marra |
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| Přispěvatelé: | Salvatore, Marcella, Marra, Antonella, Duraccio, Donatella, Shayanfar, Shima, D Pillai, Suresh, Cimmino, Sossio, Silvestre, Clara |
| Rok vydání: | 2015 |
| Předmět: |
nanostructured polymer
Yield (engineering) Materials science Polymers and Plastics packaging 02 engineering and technology 010402 general chemistry 01 natural sciences Nanomaterials chemistry.chemical_compound Crystallinity Polylactic acid Materials Chemistry biopolymers and renewable polymer structure Irradiation Composite material Nanocomposite clay General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Food packaging Montmorillonite chemistry property relation 0210 nano-technology |
| Zdroj: | Journal of Applied Polymer Science. 133 |
| ISSN: | 0021-8995 |
| Popis: | This study was aimed at (1) developing new films based on polylactic acid/montmorillonite (PLA/MMT) with improved properties for applications in the food packaging industry and (2) analyzing the effect of electron-beam (eBeam) radiation on the structural, morphological, mechanical, and barrier properties of these nanomaterials. Nanocomposites based on PLA with 1, 3, and 5 wt % of MMT were prepared in a twin-screw extruder and then filmed by a calender. The nanocomposites were exposed to eBeam doses; one set at 1 kGy dose and the other at 10 kGy dose. The effect of MMT addition and of eBeam radiation on the properties of PLA were assessed. For all composites, a homogeneous distribution and dispersion of MMT in the PLA matrix was obtained. All nanocomposites showed an increase of the mechanical and oxygen-barrier properties compared to neat PLA. The eBeam irradiation caused an increase of the crystallinity, formation of crosslink, increase of the glass-transition temperatures, and enhancement of the yield values in the stress–strain curves for all nanocomposites. This study demonstrated that PLA/MMT films are suitable materials for eBeam processing of prepacked food at the realistic doses that were employed in this study. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42219. |
| Databáze: | OpenAIRE |
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