Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Fluorescence labeling of high density polyethylene for identification and separation of selected containers in plastics waste streams. Comparison of thermal and photochemical stability of different fluorescent tracers
Year:2017
Research Areas
  • Macromolecules and polymers,
  • Engineering
Information
Abstract
In recent years, a great effort has been devoted to the development of new automated identification and sorting methods for post-consumer plastics in the waste streams that reach the recycling processes, as the final properties of the recycled materials largely depend on the purity of the plastic residue. This work explores the use of fluorescence spectroscopy as a complementary technique to address the limitations of the current technologies. Specifically, the use of fluorescent markers for the removing, for technical or safety related issues, of selected high density polyethylene containers from the waste stream has been studied. The results indicate that identification by extrinsic fluorescence can be easily achieved even with small proportion of markers (10-3 wt%) without significant change of the polymer structure. The effect of thermal, hygrothermal and photochemical degradation on the fluorescence emission has been analyzed. Although the signal intensity decreases during the accelerated degradation, distinguishable fluorescent emission was recorded even after sample exposure to aggressive conditions, thus enabling the correct identification of the marked plastics.
International
Si
JCR
No
Title
Materials Today Communications
ISBN
2352-4928
Impact factor JCR
Impact info
Volume
12
10.1016/j.mtcomm.2017.07.008
Journal number
From page
125
To page
132
Month
SIN MES
Ranking
Participants
  • Autor: Ana Arenas Vivo (IMDEA Energía)
  • Autor: Freddys Beltran Gonzalez (UPM)
  • Autor: Maria Victoria Alcazar Montero (UPM)
  • Autor: María Ulagares de la Orden Hernández (Universidad Complutense de Madrid)
  • Autor: Joaquin Maria Martinez Urreaga (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Polímeros, Caracterización y Aplicaciones
  • Departamento: Ingeniería Química Industrial y del Medio Ambiente
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)