Memorias de investigación
Artículos en revistas:
Effects of Aging and Different Mechanical Recycling Processes on the Structure and Properties of Poly(lactic acid)-clay Nanocomposites
Año:2017
Áreas de investigación
  • Macromoléculas y polímeros
Datos
Descripción
The growing use of poly(lactic acid) (PLA) and PLA-based nanocomposites in packaging has raised the interest of studying the mechanical recycling of the wastes and the properties of the recycled materials. The main objective of this work was to study the effect of the aging and different mechanical recycling processes on the structure and properties of a PLA-montmorillonite nanocomposite. The two recycling processes included accelerated thermal and photochemical aging steps to simulate the degradation during the service life. One of them also included a demanding washing process prior to the reprocessing. A decrease in the molecular weight of PLA was observed in the recycled materials, especially in those subjected to the washing step, which explained the small decrease in microhardness and the increased water uptake at long immersion times. Water absorption at short immersion times was similar in virgin and recycled materials and was accurately described using a Fickian model. The recycled materials showed increased thermal, optical and gas barrier properties due to the improved clay dispersion that was observed by XRD and TEM analysis. The results suggest that recycled PLA-clay nanocomposites can be used in demanding applications.
Internacional
Si
JCR del ISI
Si
Título de la revista
Journal of Polymers And the Environment
ISSN
1566-2543
Factor de impacto JCR
1,877
Información de impacto
Datos JCR del año 2016
Volumen
26
DOI
10.1007/s10924-017-1117-z
Número de revista
Desde la página
2142
Hasta la página
2152
Mes
SIN MES
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Ingeniería Química Industrial y del Medio Ambiente
  • Departamento: Física Aplicada e Ingeniería de Materiales