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Article

Influence of Tire Rubber Particles Addition in Different Branching Degrees Polyethylene Matrix Composites on Physical and Structural Behavior

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Mechanical Engineering Department, Escola Tècnica Superior d’Enginyeria Química, Universitat Rovira i Virgili (ETSEQ-URV), 43007 Tarragona, Spain
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Electrical Engineering Department, Escola d’Enginyeria de Terrassa, Universitat Politècnica de Catalunya (EET-UPC), 08222 Terrassa, Spain
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Electrical Engineering Department, Escola Tècnica Superior d’Enginyeria Química, Universitat Rovira i Virgili (ETSE-URV), 43007 Tarragona, Spain
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Chemical Engineering Department, Escola d’Enginyeria de Terrassa, Universitat Politècnica de Catalunya (EET-UPC), 08222 Terrassa, Spain
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Author to whom correspondence should be addressed.
Academic Editor: Ki-Ho Nam
Polymers 2021, 13(19), 3213; https://doi.org/10.3390/polym13193213
Received: 26 August 2021 / Revised: 16 September 2021 / Accepted: 20 September 2021 / Published: 22 September 2021
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. View Full-Text
Keywords: electrical properties; electrical modulus; composites; structural features; ground tire rubber; polyethylene; recycling electrical properties; electrical modulus; composites; structural features; ground tire rubber; polyethylene; recycling
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MDPI and ACS Style

Marín-Genescà, M.; Mujal Rosas, R.; García Amorós, J.; Massagues Vidal, L.; Colom Fajula, X. Influence of Tire Rubber Particles Addition in Different Branching Degrees Polyethylene Matrix Composites on Physical and Structural Behavior. Polymers 2021, 13, 3213. https://doi.org/10.3390/polym13193213

AMA Style

Marín-Genescà M, Mujal Rosas R, García Amorós J, Massagues Vidal L, Colom Fajula X. Influence of Tire Rubber Particles Addition in Different Branching Degrees Polyethylene Matrix Composites on Physical and Structural Behavior. Polymers. 2021; 13(19):3213. https://doi.org/10.3390/polym13193213

Chicago/Turabian Style

Marín-Genescà, Marc, Ramon Mujal Rosas, Jordi García Amorós, Lluis Massagues Vidal, and Xavier Colom Fajula. 2021. "Influence of Tire Rubber Particles Addition in Different Branching Degrees Polyethylene Matrix Composites on Physical and Structural Behavior" Polymers 13, no. 19: 3213. https://doi.org/10.3390/polym13193213

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