development of antibacterial composite films based on isotactic polypropylene and coated zno particles for active food packaging

Clics: 358
ID: 152793
2016
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Résumé
This study was aimed at developing new films based on isotactic polypropylene (iPP) for food packaging applications using zinc oxide (ZnO) with submicron dimension particles obtained by spray pyrolysis. To improve compatibility with iPP, the ZnO particles were coated with stearic acid (ZnOc). Composites based on iPP with 2 wt % and 5 wt % of ZnOc were prepared in a twin-screw extruder and then filmed by a calender. The effect of ZnOc on the properties of iPP were assessed and compared with those obtained in previous study on iPP/ZnO and iPP/iPPgMA/ZnO. For all composites, a homogeneous distribution and dispersion of ZnOc was obtained indicating that the coating with stearic acid of the ZnO particles reduces the surface polarity mismatch between iPP and ZnO. The iPP/ZnOc composite films have relevant zinc oxide with respect to E. coli, higher thermal stability and improved mechanical and impact properties than the pure polymer and the composites iPP/ZnO and iPP/iPPgMA/ZnO. This study demonstrated that iPP/ZnOc films are suitable materials for potential application in the active packaging field.
Clé de Référence
silvestre2016coatingsdevelopment Utilisez cette clé pour citer automatiquement dans le manuscrit lors de l'utilisation de SciMatic Manuscript Manager ou Thesis Manager
Auteurs ;Clara Silvestre;Donatella Duraccio;Antonella Marra;Valentina Strongone;Sossio Cimmino
Revue die pharmazie
Année 2016
DOI
10.3390/coatings6010004
URL
http://www.mdpi.com/2079-6412/6/1/4
Mots-clés
zinc oxide properties isotactic polypropylene civil engineering (general)

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