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Degradation assessment of polyethylene-based material through electrical and chemical-physical analyses

Article dans une revue avec comité de lecture
Author
SURACI, Simone Vincenzo
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
FABIANI, Davide
MAZZOCCHETTI, Laura
GIORGINI, Loris

URI
http://hdl.handle.net/10985/18401
DOI
10.3390/en13030650
Date
2020
Journal
Energies

Abstract

The usability of any material hinges upon its stability over time. One of the major concerns, focusing on polymeric materials, is the degradation they face during their service life. The degradation mechanisms are deeply influenced by the aging temperature to which the material is subjected. In this paper, low-density polyethylene (LDPE) flat specimens were thermally aged under two different temperatures (90 °C and 110 °C) and analyzed. Specimens were characterized through both the most common mechanical and chemical measurements techniques (e.g., tensile stress, thermal analyses, oxidation induction time) and electrical measurements (dielectric spectroscopy, in particular), which are examples of non-destructive techniques. As a result, a very spread characterization of the polyethylene-based materials was obtained and a very good correlation was found to exist between these different techniques, highlighting the possibility of following the aging degradation development of polymers through electrical non-destructive techniques.

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  • Dynamique des Fluides (DynFluid)
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)

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