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Multifunctional PLA Blends Containing Chitosan Mediated Silver Nanoparticles: Thermal, Mechanical, Antibacterial, and Degradation Properties

Poly(lactic acid) (PLA) is one of the most commonly employed synthetic biopolymers for facing plastic waste problems. Despite its numerous strengths, its inherent brittleness, low toughness, and thermal stability, as well as a relatively slow crystallization rate represent some limiting properties w...

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Autores principales: Sonseca, Agueda, Madani, Salim, Rodríguez, Gema, Hevilla, Víctor, Echeverría, Coro, Fernández-García, Marta, Muñoz-Bonilla, Alexandra, Charef, Noureddine, López, Daniel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7022492/
https://www.ncbi.nlm.nih.gov/pubmed/31861765
http://dx.doi.org/10.3390/nano10010022
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author Sonseca, Agueda
Madani, Salim
Rodríguez, Gema
Hevilla, Víctor
Echeverría, Coro
Fernández-García, Marta
Muñoz-Bonilla, Alexandra
Charef, Noureddine
López, Daniel
author_facet Sonseca, Agueda
Madani, Salim
Rodríguez, Gema
Hevilla, Víctor
Echeverría, Coro
Fernández-García, Marta
Muñoz-Bonilla, Alexandra
Charef, Noureddine
López, Daniel
author_sort Sonseca, Agueda
collection PubMed
description Poly(lactic acid) (PLA) is one of the most commonly employed synthetic biopolymers for facing plastic waste problems. Despite its numerous strengths, its inherent brittleness, low toughness, and thermal stability, as well as a relatively slow crystallization rate represent some limiting properties when packaging is its final intended application. In the present work, silver nanoparticles obtained from a facile and green synthesis method, mediated with chitosan as a reducing and stabilizing agent, have been introduced in the oligomeric lactic acid (OLA) plasticized PLA in order to obtain nanocomposites with enhanced properties to find potential application as antibacterial food packaging materials. In this way, the green character of the matrix and plasticizer was preserved by using an eco-friendly synthesis protocol of the nanofiller. The X-ray diffraction (XRD) and differential scanning calorimetry (DSC) results proved the modification of the crystalline structure as well as the crystallinity of the pristine matrix when chitosan mediated silver nanoparticles (AgCH-NPs) were present. The final effect over the thermal stability, mechanical properties, degradation under composting conditions, and antimicrobial behavior when AgCH-NPs were added to the neat plasticized PLA matrix was also investigated. The obtained results revealed interesting properties of the final nanocomposites to be applied as materials for the targeted application.
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spelling pubmed-70224922020-03-09 Multifunctional PLA Blends Containing Chitosan Mediated Silver Nanoparticles: Thermal, Mechanical, Antibacterial, and Degradation Properties Sonseca, Agueda Madani, Salim Rodríguez, Gema Hevilla, Víctor Echeverría, Coro Fernández-García, Marta Muñoz-Bonilla, Alexandra Charef, Noureddine López, Daniel Nanomaterials (Basel) Article Poly(lactic acid) (PLA) is one of the most commonly employed synthetic biopolymers for facing plastic waste problems. Despite its numerous strengths, its inherent brittleness, low toughness, and thermal stability, as well as a relatively slow crystallization rate represent some limiting properties when packaging is its final intended application. In the present work, silver nanoparticles obtained from a facile and green synthesis method, mediated with chitosan as a reducing and stabilizing agent, have been introduced in the oligomeric lactic acid (OLA) plasticized PLA in order to obtain nanocomposites with enhanced properties to find potential application as antibacterial food packaging materials. In this way, the green character of the matrix and plasticizer was preserved by using an eco-friendly synthesis protocol of the nanofiller. The X-ray diffraction (XRD) and differential scanning calorimetry (DSC) results proved the modification of the crystalline structure as well as the crystallinity of the pristine matrix when chitosan mediated silver nanoparticles (AgCH-NPs) were present. The final effect over the thermal stability, mechanical properties, degradation under composting conditions, and antimicrobial behavior when AgCH-NPs were added to the neat plasticized PLA matrix was also investigated. The obtained results revealed interesting properties of the final nanocomposites to be applied as materials for the targeted application. MDPI 2019-12-20 /pmc/articles/PMC7022492/ /pubmed/31861765 http://dx.doi.org/10.3390/nano10010022 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sonseca, Agueda
Madani, Salim
Rodríguez, Gema
Hevilla, Víctor
Echeverría, Coro
Fernández-García, Marta
Muñoz-Bonilla, Alexandra
Charef, Noureddine
López, Daniel
Multifunctional PLA Blends Containing Chitosan Mediated Silver Nanoparticles: Thermal, Mechanical, Antibacterial, and Degradation Properties
title Multifunctional PLA Blends Containing Chitosan Mediated Silver Nanoparticles: Thermal, Mechanical, Antibacterial, and Degradation Properties
title_full Multifunctional PLA Blends Containing Chitosan Mediated Silver Nanoparticles: Thermal, Mechanical, Antibacterial, and Degradation Properties
title_fullStr Multifunctional PLA Blends Containing Chitosan Mediated Silver Nanoparticles: Thermal, Mechanical, Antibacterial, and Degradation Properties
title_full_unstemmed Multifunctional PLA Blends Containing Chitosan Mediated Silver Nanoparticles: Thermal, Mechanical, Antibacterial, and Degradation Properties
title_short Multifunctional PLA Blends Containing Chitosan Mediated Silver Nanoparticles: Thermal, Mechanical, Antibacterial, and Degradation Properties
title_sort multifunctional pla blends containing chitosan mediated silver nanoparticles: thermal, mechanical, antibacterial, and degradation properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7022492/
https://www.ncbi.nlm.nih.gov/pubmed/31861765
http://dx.doi.org/10.3390/nano10010022
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