Biodegradable nanocomposite for the packaging sector: preparation and characterization

Authors

  • Dr.C. Julio Cesar Velázquez-Infante Centro de Estudios de Agroecosistemas Áridos, Universidad de Holguín, Holguín, Cuba
  • MSc. Hassan Martínez-Hung Departamento de Química, Universidad de Oriente, Santiago de Cuba, Cuba
  • Dr.C. Edgar Franco-Urquiza Centro de Ingeniería y Desarrollo Industrial, Querétaro, México
  • Dr.C. José Gámez-Pérez Grupo de Polímeros y Materiales Avanzados, Universidad Jaume I, Castelló, España
  • Dr.C. Maria Lluisa-Maspoch Centre Català del Plàstic, Universitat Politècnica de Catalunya, España

Keywords:

nanocomposites, polylactic acid, montmorillonite, essential work of fracture

Abstract

In this work, the effect of processing, reinforcing agent content and deageing treatment on the fracture behaviour of polylactic acid sheets reinforced with organomodified nanoclay was assessed. The structure of the nanocomposites was studied by gel permeation chromatography, transmission electron microscopy and focused ion beam milling and scanning electron microscopy. The thermal and fracture behaviours have been assessed by differential scanning calorimetry and the essential work of fracture (EWF) approach respectively. Processing caused the degradation of PLA chains; phenomena that was enhanced by the presence of montmorillonite. The de-aging treatment completely erased the ageing state of the sheets, promoting a brittle-ductile transition and enabling the application of the EWF. The fracture toughness of aged PLA is considerably enhanced by nanoclay reinforcement and/or application of a deaging treatment.

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Published

2020-03-04

How to Cite

Velázquez-Infante, D. J. C., Martínez-Hung, M. H., Franco-Urquiza, D. E., Gámez-Pérez, D. J., & Lluisa-Maspoch, D. M. (2020). Biodegradable nanocomposite for the packaging sector: preparation and characterization. Revista Cubana De Química, 32(1), 116–134. Retrieved from https://cubanaquimica.uo.edu.cu/index.php/cq/article/view/5130

Issue

Vol. 32 No. 1 (2020)

Section

Artículos

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