DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGING

Polylactic acid (PLA) nanocomposites with two antimicrobial agents based on copper modified montmorillonite (MtCu2+ and MtCu0) were developed in order to obtain a lower environmental impact material with antimicrobial activity for potential use in food packaging. Clay modification was permorfed by c...

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Autores principales:	BRUNA,J. E, QUILODRÁN,H, GUARDA,A, RODRÍGUEZ,F, GALOTTO,M. J, FIGUEROA,P
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2015
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072015000300007
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spelling	oai:scielo:S0717-970720150003000072015-12-04DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGINGBRUNA,J. EQUILODRÁN,HGUARDA,ARODRÍGUEZ,FGALOTTO,M. JFIGUEROA,PPolylactic acid (PLA) nanocomposites with two antimicrobial agents based on copper modified montmorillonite (MtCu2+ and MtCu0) were developed in order to obtain a lower environmental impact material with antimicrobial activity for potential use in food packaging. Clay modification was permorfed by cation exchange between MtNa+ and a copper salt obtaining MtCu2+ and its followed reduction with NaBH4 obtaining MtCu0. Then PLA nanocomposite films (MtCu2+/ PLA and MtCu0/PLA), using different concentration of MtCu2+ and MtCu0 (1, 3 and 5 wt.%) were obtained by casting technique. X-ray diffraction (XRD) and Transmission electronic microscopy (TEM) analysis evidenced a certain degree of intercalation of the modified clays in the nanocomposites. Thermal, mechanical and optical properties showed variations by incorporating MtCu2+ and MtCu0 in the polymer matrix. On the other hand, it was possible to evidence antimicrobial activity of the nanocomposites (ASTM Standard E2149) against to Escherichia coli ATCC 25922 and Listeria innocua ATCC 33090 obtaining a 99% maximum of reduction to both bacteria.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.60 n.3 20152015-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072015000300007en10.4067/S0717-97072015000300007
institution	Scielo Chile
collection	Scielo Chile
language	English
description	Polylactic acid (PLA) nanocomposites with two antimicrobial agents based on copper modified montmorillonite (MtCu2+ and MtCu0) were developed in order to obtain a lower environmental impact material with antimicrobial activity for potential use in food packaging. Clay modification was permorfed by cation exchange between MtNa+ and a copper salt obtaining MtCu2+ and its followed reduction with NaBH4 obtaining MtCu0. Then PLA nanocomposite films (MtCu2+/ PLA and MtCu0/PLA), using different concentration of MtCu2+ and MtCu0 (1, 3 and 5 wt.%) were obtained by casting technique. X-ray diffraction (XRD) and Transmission electronic microscopy (TEM) analysis evidenced a certain degree of intercalation of the modified clays in the nanocomposites. Thermal, mechanical and optical properties showed variations by incorporating MtCu2+ and MtCu0 in the polymer matrix. On the other hand, it was possible to evidence antimicrobial activity of the nanocomposites (ASTM Standard E2149) against to Escherichia coli ATCC 25922 and Listeria innocua ATCC 33090 obtaining a 99% maximum of reduction to both bacteria.
author	BRUNA,J. E QUILODRÁN,H GUARDA,A RODRÍGUEZ,F GALOTTO,M. J FIGUEROA,P
spellingShingle	BRUNA,J. E QUILODRÁN,H GUARDA,A RODRÍGUEZ,F GALOTTO,M. J FIGUEROA,P DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGING
author_facet	BRUNA,J. E QUILODRÁN,H GUARDA,A RODRÍGUEZ,F GALOTTO,M. J FIGUEROA,P
author_sort	BRUNA,J. E
title	DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGING
title_short	DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGING
title_full	DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGING
title_fullStr	DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGING
title_full_unstemmed	DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGING
title_sort	development of antibacterial mtcu/pla nanocomposites by casting method for potential use in food packaging
publisher	Sociedad Chilena de Química
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072015000300007
work_keys_str_mv	AT brunaje developmentofantibacterialmtcuplananocompositesbycastingmethodforpotentialuseinfoodpackaging AT quilodranh developmentofantibacterialmtcuplananocompositesbycastingmethodforpotentialuseinfoodpackaging AT guardaa developmentofantibacterialmtcuplananocompositesbycastingmethodforpotentialuseinfoodpackaging AT rodriguezf developmentofantibacterialmtcuplananocompositesbycastingmethodforpotentialuseinfoodpackaging AT galottomj developmentofantibacterialmtcuplananocompositesbycastingmethodforpotentialuseinfoodpackaging AT figueroap developmentofantibacterialmtcuplananocompositesbycastingmethodforpotentialuseinfoodpackaging
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DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGING

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