Effects of Aging and Different Mechanical Recycling Processes on the Structure and Properties of Poly(lactic acid)-clay Nanocomposites

Beltrán González, Freddys and Ortega, Elena and Solvoll, Anne-Marthe and Lorenzo Esteban, Vicente and Orden Hernández, María Ulagares de la and Martínez Urreaga, Joaquín (2017). Effects of Aging and Different Mechanical Recycling Processes on the Structure and Properties of Poly(lactic acid)-clay Nanocomposites. "Journal of Polymers And the Environment", v. 26 (n. 5); pp. 2142-2152. ISSN 1566-2543. https://doi.org/10.1007/s10924-017-1117-z.

Description

Title: Effects of Aging and Different Mechanical Recycling Processes on the Structure and Properties of Poly(lactic acid)-clay Nanocomposites
Author/s:
  • Beltrán González, Freddys
  • Ortega, Elena
  • Solvoll, Anne-Marthe
  • Lorenzo Esteban, Vicente
  • Orden Hernández, María Ulagares de la
  • Martínez Urreaga, Joaquín
Item Type: Article
Título de Revista/Publicación: Journal of Polymers And the Environment
Date: 2017
Volume: 26
Subjects:
Freetext Keywords: Mechanical recycling; Poly(lactic acid); Nanocomposites; Structure; Properties
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Química Industrial y del Medio Ambiente
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT2013-47972-C2-2-PUnspecifiedUnspecifiedNANOCOMPUESTOS POLIMERICOS BASADOS EN SILICES MESOPOROSAS Y EN GRAFENO PARA PRESTACIONES AVANZADAS
Universidad Politécnica de MadridUPM RP 160543006UnspecifiedUnspecifiedUnspecified

More information

Item ID: 53333
DC Identifier: http://oa.upm.es/53333/
OAI Identifier: oai:oa.upm.es:53333
DOI: 10.1007/s10924-017-1117-z
Official URL: https://link.springer.com/article/10.1007/s10924-017-1117-z
Deposited by: Memoria Investigacion
Deposited on: 11 Jan 2019 15:14
Last Modified: 01 Jun 2019 22:30
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