Development of MtCu2+/LDPE nanocomposites with antimicrobial activity for potential use in food packaging

The antimicrobial efficiency of novel MtCu2+/LDPE nanocomposites against Escherichia coli 0157:H7 n/t was tested in the present work. Montmorillonite modified with copper (MtCu2+) was obtained using cation exchange in solution and nanocomposite films were prepared by melt mixing in an extruder at 20...

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Veröffentlicht in:	Applied clay science 2012-04, Vol.58, p.79-87
Hauptverfasser:	Bruna, J.E., Peñaloza, A., Guarda, A., Rodríguez, F., Galotto, M.J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antimicrobial activity Copper Copper modified clay Earth sciences Earth, ocean, space Escherichia coli Exact sciences and technology Mineralogy Montmorillonite Nanocomposites Polyethylene Silicates
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container_title	Applied clay science
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creator	Bruna, J.E. Peñaloza, A. Guarda, A. Rodríguez, F. Galotto, M.J.
description	The antimicrobial efficiency of novel MtCu2+/LDPE nanocomposites against Escherichia coli 0157:H7 n/t was tested in the present work. Montmorillonite modified with copper (MtCu2+) was obtained using cation exchange in solution and nanocomposite films were prepared by melt mixing in an extruder at 200°C with different compositions. Characterization of MtCu2+ and MtCu2+/LDPE nanocomposites was carried out using XRD, AA, TGA, DSC, and microbiological analysis. The clay polymer nanocomposites (CPN) were more stable at higher temperatures, resulting from the incorporation of MtCu2+ in the polymer. The results indicate that the antibacterial effect of the CPN increases with the proportion of MtCu2+ added, obtaining a 94% reduction when 4% of MtCu2+ was added to the polymer.
doi_str_mv	10.1016/j.clay.2012.01.016
format	Article
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source	ScienceDirect Journals (5 years ago - present)
subjects	Antimicrobial activity Copper Copper modified clay Earth sciences Earth, ocean, space Escherichia coli Exact sciences and technology Mineralogy Montmorillonite Nanocomposites Polyethylene Silicates
title	Development of MtCu2+/LDPE nanocomposites with antimicrobial activity for potential use in food packaging
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