Nano-biocomposite films with modified cellulose nanocrystals and synthesized silver nanoparticles

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Title: Nano-biocomposite films with modified cellulose nanocrystals and synthesized silver nanoparticles
Authors: Fortunati, Elena | Rinaldi, Silvia | Peltzer, Mercedes Ana | Bloise, Nora | Visai, Livia | Armentano, Ilaria | Jiménez, Alfonso | Latterini, Loredana | Kenny, José María
Research Group/s: Análisis de Polímeros y Nanomateriales
Center, Department or Service: Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología
Keywords: Nano-biocomposites | Cellulose nanocrystals | Silver nanoparticles | Barrier properties | Migration properties | Antibacterial activity
Knowledge Area: Química Analítica
Issue Date: 30-Jan-2014
Publisher: Elsevier
Citation: Carbohydrate Polymers. 2014, 101: 1122-1133. doi:10.1016/j.carbpol.2013.10.055
Abstract: Ternary nano-biocomposite films based on poly(lactic acid) (PLA) with modified cellulose nanocrystals (s-CNC) and synthesized silver nanoparticles (Ag) have been prepared and characterized. The functionalization of the CNC surface with an acid phosphate ester of ethoxylated nonylphenol favoured its dispersion in the PLA matrix. The positive effects of the addition of cellulose and silver on the PLA barrier properties were confirmed by reductions in the water permeability (WVP) and oxygen transmission rate (OTR) of the films tested. The migration level of all nano-biocomposites in contact with food simulants were below the permitted limits in both non-polar and polar simulants. PLA nano-biocomposites showed a significant antibacterial activity influenced by the Ag content, while composting tests showed that the materials were visibly disintegrated after 15 days with the ternary systems showing the highest rate of disintegration under composting conditions.
Sponsor: L.V. would like to acknowledge the financial support from MIUR, PRIN 2010–11 project entitled “Nanomed” (prot.2010FPTBSH 009). M.P. and A.J. acknowledge the financial support from the Spanish Ministry of Economy and Competitiveness (MAT2011-28648-C02-1).
ISSN: 0144-8617 (Print) | 1879-1344 (Online)
DOI: 10.1016/j.carbpol.2013.10.055
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
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Appears in Collections:INV - NANOBIOPOL - Artículos de Revistas

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