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Artículo

Biodegradation of three-layer laminate films based on gelatin under indoor soil conditions

Martucci, Josefa FabianaIcon ; Ruseckaite, Roxana AlejandraIcon
Fecha de publicación: 12/2009
Editorial: Elsevier
Revista: Polymer Degradation And Stability
ISSN: 0141-3910
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ingeniería Química

Resumen

Three-layer gelatin films, composed of sodium montmorillonite (MMt) – plasticized gelatin (Ge-5MMt) (inner layer) and dialdehyde starch (DAS) – cross-linked and plasticized gelatin films (Ge-10DAS) (outer layers), obtained by heat-compression molding, were submitted to degradation under indoor soil burial conditions for 14 days. Biodegradation of multilayer film as well as individual components and control gelatin films was evaluated by monitoring water absorption and weight loss. It was established that technological treatments performed on gelatin, such as cross-linking, compounding with clay and heatcompression molding have a major impact on the biodegradation rate and extent. The possible reasons are discussed. Weight loss results revealed that the susceptibility to microbial attack during soil burial varied in the order: Ge-10DAS < multilayer < Ge-5MMt < gelatin control film. The intermediate behaviour of the multilayer was associated with the presence of hydrogen-bonding interactions between layers, induced by processing. Scanning electron microscopy revealed that the multilayer was preferentially biodegraded by filamentous microorganisms and even larvae in the later stages of the process. The presence of holes and pits on the multilayer surface was more likely attributed to the preferential removal of glycerol and DAS as shown by thermogravimetric analysis
Palabras clave: Gelatin , Multilayer , Biodegradation , Soil Burial
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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-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/66295
DOI: https://doi.org/10.1016/j.polymdegradstab.2009.03.018
URL: https://www.sciencedirect.com/science/article/pii/S0141391009000755
Colecciones
Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Citación
Martucci, Josefa Fabiana; Ruseckaite, Roxana Alejandra; Biodegradation of three-layer laminate films based on gelatin under indoor soil conditions; Elsevier; Polymer Degradation And Stability; 94; 8; 12-2009; 1307-1313
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