Effect of simulated mechanical recycling processes on the structure and properties of poly(lactic acid)

Beltrán González, Freddys and Lorenzo Esteban, Vicente and Acosta García, Jessica del Valle and Orden Hernández, María Ulagares de la and Martínez Urreaga, Joaquín (2018). Effect of simulated mechanical recycling processes on the structure and properties of poly(lactic acid). "Journal of Environmental Management", v. 216 ; pp. 25-31. ISSN 0301-4797. https://doi.org/10.1016/j.jenvman.2017.05.020.

Description

Title: Effect of simulated mechanical recycling processes on the structure and properties of poly(lactic acid)
Author/s:
  • Beltrán González, Freddys
  • Lorenzo Esteban, Vicente
  • Acosta García, Jessica del Valle
  • Orden Hernández, María Ulagares de la
  • Martínez Urreaga, Joaquín
Item Type: Article
Título de Revista/Publicación: Journal of Environmental Management
Date: 15 June 2018
ISSN: 0301-4797
Volume: 216
Subjects:
Freetext Keywords: Poly(lactic acid); Mechanical recycling; Structure; Optical properties; Mechanical properties; 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: Recognition - No derivative works - Non commercial

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Abstract

The aim of this work is to study the effects of different simulated mechanical recycling processes on the structure and properties of PLA. A commercial grade of PLA was melt compounded and compression molded, then subjected to two different recycling processes. The first recycling process consisted of an accelerated ageing and a second melt processing step, while the other recycling process included an accelerated ageing, a demanding washing process and a second melt processing step. The intrinsic viscosity measurements indicate that both recycling processes produce a degradation in PLA, which is more pronounced in the sample subjected to the washing process. DSC results suggest an increase in the mobility of the polymer chains in the recycled materials; however the degree of crystallinity of PLA seems unchanged. The optical, mechanical and gas barrier properties of PLA do not seem to be largely affected by the degradation suffered during the different recycling processes. These results suggest that, despite the degradation of PLA, the impact of the different simulated mechanical recycling processes on the final properties is limited. Thus, the potential use of recycled PLA in packaging applications is not jeopardized.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT201347972-C2-2-PUnspecifiedUnspecifiedUnspecified
Universidad Politécnica de MadridRP 160543006UnspecifiedUnspecifiedUnspecified

More information

Item ID: 53563
DC Identifier: http://oa.upm.es/53563/
OAI Identifier: oai:oa.upm.es:53563
DOI: 10.1016/j.jenvman.2017.05.020
Official URL: https://www.sciencedirect.com/science/article/pii/S0301479717304802?via%3Dihub
Deposited by: Memoria Investigacion
Deposited on: 17 Jan 2019 16:53
Last Modified: 17 Jan 2019 16:53
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