Autor según el artículo: Marín-Genescà M; Rosas RM; Amorós JG; Vidal LM; Fajula XC
Departamento: Enginyeria Mecànica
Autor/es de la URV: García Amorós, Jordi / Marín Genescà, Marc
Palabras clave: Structural features Recycling Polyethylene Ground tire rubber Electrical properties Electrical modulus Dielectric-relaxation Composites structural features recycling polyethylene ground tire rubber electrical modulus conductivity composites
Resumen: Waste from pneumatic wheels is one of the major environmental problems, and the scientific community is looking for methods to recycle this type of waste. In this paper, ground tire rubber particles (GTR) from disused tires have been mixed with samples of low-density polyethylene (LDPE) and high-density polyethylene (HDPE), and morphological tests have been performed using scanning electron microscopy (SEM), as well as the dynamic electric analysis (DEA) dielectric characterization technique using impedance spectroscopy. From this experience, how GTR reinforcement influences polyethylene and what influence GTR particles have on the branched polyethylene has been detected. For pure LDPE samples, a Debye-type dielectric behavior is observed with an imperfect semicircle, which depends on the temperature, as it shows differences for the samples at 30◦ C and 120◦ C, unlike the HDPE samples, which do not show such a trend. The behavior in samples with Debye behavior is like an almost perfect dipole and is due to the crystalline behavior of polyethylene at high temperature and without any reinforcement. These have been obtained evidence that for branched PE (LPDE) the Maxwell Wagner Sillars (MWS) effect is highly remarkable and that this happens due to the intrachain polarization effect combined with MWS. This means that the permittivity and conductivity at LDPE/50%GTR are high than LDPE/70%GTR. However, it does not always occur that way with HDPE composites in which HDPE/70%GTR has the highest values of permittivity and conductivity, due to the presence of conductive fraction (Carbon Black-30%) in the GTR particles and their dielectric behavior.
Áreas temáticas: Polymers and plastics Polymer science Odontología General chemistry Farmacia Engenharias ii Ciências biológicas ii Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: marc.marin@urv.cat jordi.garcia-amoros@urv.cat
Identificador del autor: 0000-0002-7204-4526 0000-0002-6548-5059
Fecha de alta del registro: 2023-02-19
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.mdpi.com/2073-4360/13/19/3213
URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Polymers. 13 (19):
Referencia de l'ítem segons les normes APA: Marín-Genescà M; Rosas RM; Amorós JG; Vidal LM; Fajula XC (2021). Influence of tire rubber particles addition in different branching degrees polyethylene matrix composites on physical and structural behavior. Polymers, 13(19), -. DOI: 10.3390/polym13193213
DOI del artículo: 10.3390/polym13193213
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2021
Tipo de publicación: Journal Publications
Repositori URV