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Artículo

Effect of greenly synthetized silver nanoparticles on the properties of active starch films obtained by extrusion and compression molding

Ceballos, Rocío LaisIcon ; Von Bilderling, CatalinaIcon ; Guz, Lucas MartínIcon ; Bernal, Celina RaquelIcon ; Fama, Lucia MercedesIcon
Fecha de publicación: 06/2021
Editorial: Elsevier
Revista: Carbohydrate Polymers
ISSN: 0144-8617
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
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Resumen

Replacing packaging plastics with biodegradable active materials is an emerging concern. In this context, thermoplastic starch (TPS) films and nanocomposites containing different concentrations of silver nanoparticles synthetized with starch and yerba mate (TPS-AgNP1: 0.006 wt.% and TPS-AgNP2: 0.015 wt.%) were developed by extrusion and compression molding. Spherical AgNP of 20−130 nm were obtained after the green synthesis and excellent adhesion between AgNP and the matrix was observed. Consequently, both composites exhibited higher stiffness and tensile strength values than TPS, indicating a reinforcing effect of AgNP. TPS-AgNP1 showed the highest strain at break and toughness values, and TPS-AgNP2 presented the lowest moisture content and ability to delay E. coli growth. Additionally, all materials disintegrated after 4 weeks of burial and resulted thermally stable up to 240 °C. This investigation provides a convenient and inexpensive way to develop starch-based nanocomposites with improved properties which appear to be promising as active packaging materials.
Palabras clave: ACTIVE STARCH-BASED NANOCOMPOSITES , ANTIBACTERIAL ACTIVITY , EXTRUSION AND COMPRESSION MOLDING , GREEN SYNTHESIS , PHYSICOCHEMICAL PROPERTIES , SILVER NANOPARTICLES
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/171938
DOI: https://doi.org/10.1016/j.carbpol.2021.117871
URL: https://www.sciencedirect.com/science/article/pii/S0144861721002587
Colecciones
Articulos(INIFTA)
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos (IIIA)
Articulos de INSTITUTO DE INVESTIGACION E INGENIERIA AMBIENTAL
Articulos(ITPN)
Articulos de INSTITUTO DE TECNOLOGIA EN POLIMEROS Y NANOTECNOLOGIA
Citación
Ceballos, Rocío Lais; Von Bilderling, Catalina; Guz, Lucas Martín; Bernal, Celina Raquel; Fama, Lucia Mercedes; Effect of greenly synthetized silver nanoparticles on the properties of active starch films obtained by extrusion and compression molding; Elsevier; Carbohydrate Polymers; 261; 6-2021; 1-13
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