Influence of addition of organic fillers on the properties of mechanically recycled PLA

Beltrán González, Freddys and Gaspar, Gerald and Dadras Chomachayi, Masoud and Jalali-Arani, A. and Lozano-Pérez, A.A. and Cenis, José L. and Orden, M.U. de la and Pérez Tabernero, Ernesto and Martínez Urreaga, Joaquín (2020). Influence of addition of organic fillers on the properties of mechanically recycled PLA. "Environmental science and pollution research" ; https://doi.org/10.1007/s11356-020-08025-7.

Description

Title: Influence of addition of organic fillers on the properties of mechanically recycled PLA
Author/s:
  • Beltrán González, Freddys
  • Gaspar, Gerald
  • Dadras Chomachayi, Masoud
  • Jalali-Arani, A.
  • Lozano-Pérez, A.A.
  • Cenis, José L.
  • Orden, M.U. de la
  • Pérez Tabernero, Ernesto
  • Martínez Urreaga, Joaquín
Item Type: Article
Título de Revista/Publicación: Environmental science and pollution research
Date: 2020
Subjects:
Freetext Keywords: Poly(lactic acid); mechanical recycling; silk fibroin; chitosan; gas barrier properties
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Química Industrial y del Medio Ambiente
UPM's Research Group: Polímeros, Caracterización y Aplicaciones POLCA
Creative Commons Licenses: None

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Abstract

Poly(lactic acid) (PLA) is one of the most used biobased and biodegradable polymers. Due to their high stability, some of the newest grades of PLA are only degradable under severe industrial conditions. For these grades, mechanical recycling is a viable end-of-life option, with great environmental advantages. However, the polymer undergoes degradation during its service life and in the melt reprocessing, which leads to a decrease in properties that can compromise the demand for recycled plastic. The goal of this work was to evaluate the usefulness of adding small amounts of two organic fillers, during the recycling process, for improving the properties of the recycled plastic. The two organic fillers, chitosan and silk fibroin nanoparticles, are obtained from renewable resources. The behavior of the recycled plastics depends on the degradation level of the aged polymer and the nature and amount of the organic filler added. The fillers reduce the further degradation during the melt reprocessing of PLA previously subjected to severe hydrolysis, thus increasing the intrinsic viscosity of the recycled plastic. A careful selection of the organic filler added, based on the nature of the aged plastic, lead to recycled plastics with significant improvements in key mechanical, thermal and barrier properties. Thus, the use of organic fillers obtained from renewable resources can be the basis of a cost-effective and environmentally sound way for improving the mechanical recycling of plastics such as PLA.

Funding Projects

TypeCodeAcronymLeaderTitle
Horizon 2020860407Bio-plastics EuropeUnspecifiedDeveloping and Implementing Sustainability-Based Solutions for Bio-Based Plastic Production and Use to Preserve Land and Sea Environmental Quality in Europe
Government of SpainCTM2017-88989-PUnspecifiedUnspecifiedRECICLADO MECANICO DE POLI(ACIDO LACTICO): REGRADACION DEL PLASTICO RECICLADO

More information

Item ID: 66051
DC Identifier: http://oa.upm.es/66051/
OAI Identifier: oai:oa.upm.es:66051
DOI: 10.1007/s11356-020-08025-7
Deposited by: Dr. Freddys R. Beltrán
Deposited on: 04 Feb 2021 13:40
Last Modified: 05 Feb 2021 06:13
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