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Artículo

Effect of Addition of Cross-Linked Starch on the Properties of Degraded PBAT Poly(butylene adipate-co-terephthalate) Films

Grimaut, Denise AgostinaIcon ; Alves da Silva, Jania Betania; Lemos, Paulo Vitor França; Cruz Correia, Paulo Romano; Santos Santana, Jamille; Cavalcanti Pessôa, Luiggi; Estevez Areco, SantiagoIcon ; Fama, Lucia MercedesIcon ; Goyanes, Silvia NairIcon ; Rodrigues Marcelino, Henrique; de Jesus Assis, Denilson; Oliveira de Souza, Carolina
Fecha de publicación: 07/2023
Editorial: Multidisciplinary Digital Publishing Institute
Revista: Polymers
e-ISSN: 2073-4360
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Bioproductos, Biomateriales, Bioplásticos, Biocombustibles, Bioderivados, etc.

Resumen

This work aimed to evaluate the properties of butylene adipate-co-terephthalate (PBAT) degraded after 1800 days of storage (DPBAT) by preparing blends (films) with crosslinked starch (Cm) through extrusion and thermocompression. Different ratios of DPBAT:Cm (70:30, 60:40, and 50:50 m/m) were prepared. The incorporation of Cm into DPBAT significantly changed the properties of the films by making them stiffer (increasing Young’s modulus by up to 50%) and increasing the thermal resistance of DPBAT. The presence of crosslinked starch in the films made them less hydrophobic (with decreased contact angle and increased moisture content), but these parameters did not vary linearly with changes in the content of crosslinked starch in the blend (DPBAT:Cm). The microscopic images show an inhomogeneous distribution of Cm granules in the DPBAT matrix. Thus, the films prepared with PBAT show a significant decrease in their mechanical parameters and heat resistance after long-term storage. However, the preparation of blends of degraded DPBAT with crosslinked starch promoted changes in the properties of the films prepared by thermocompression, which could be useful for disposable packaging.
Palabras clave: BLENDS , CROSSLINKING , PLOY(BUTYLENE ADIPATE-CO-TEREPHTHALATE) , POTATO STARCH
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/226116
URL: https://www.mdpi.com/2073-4360/15/14/3106
DOI: https://doi.org/10.3390/polym15143106
Colecciones
Articulos (IDICAL)
Articulos de INSTITUTO DE INVESTIGACION DE LA CADENA LACTEA
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Grimaut, Denise Agostina; Alves da Silva, Jania Betania ; Lemos, Paulo Vitor França; Cruz Correia, Paulo Romano ; Santos Santana, Jamille ; et al.; Effect of Addition of Cross-Linked Starch on the Properties of Degraded PBAT Poly(butylene adipate-co-terephthalate) Films; Multidisciplinary Digital Publishing Institute; Polymers; 15; 14; 7-2023; 1-15
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