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Improved crystallinity and dynamic mechanical properties of reclaimed waste tire rubber/EVA blends under the influence of electron beam irradiation


Citation

Ramarad, Suganti and Ratnam, Chantara Thevy and Mohammad Khalid and Abdullah, Luqman Chuah and Hanson, Svenja (2017) Improved crystallinity and dynamic mechanical properties of reclaimed waste tire rubber/EVA blends under the influence of electron beam irradiation. Radiation Physics and Chemistry, 130. pp. 362-370. ISSN 0969-806X; ESSN: 1879-0895

Abstract

Dependence on automobiles has led to a huge amount of waste tires produced annually around the globe. In this study, the feasibility of recycling these waste tires by blending reclaimed waste tire rubber (RTR) with poly(ethylene-co-vinyl acetate) (EVA) and electron beam irradiation was studied. The RTR/EVA blends containing 100–0 wt% of RTR were prepared in the internal mixer followed by electron beam (EB) irradiation with doses ranging from 50 to 200 kGy. The processing torques, calorimetric and dynamic mechanical properties of the blends were studied. Blends were found to have lower processing torque indicating easier processability of RTR/EVA blends compared to EVA. RTR domains were found to be dispersed in EVA matrix, whereas, irradiation improved the dispersion of RTR into smaller domains in EVA matrix. Results showed the addition of EVA improves the efficiency of irradiation induced crosslink formation and dynamic mechanical properties of the blends at the expense of the calorimetric properties. Storage and loss modulus of 50 wt% RTR blend was higher than RTR and EVA, suggesting partial miscibility of the blend. Whereas, electron beam irradiation improved the calorimetric properties and dynamic mechanical properties of the blends through redistribution of RTR in smaller domain sizes within EVA.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Institute of Tropical Forestry and Forest Products
DOI Number: https://doi.org/10.1016/j.radphyschem.2016.09.023
Publisher: Elsevier
Keywords: Reclaimed rubber; Waste tire rubber; Devulcanized rubber; EVA; Poly(ethylene-co-vinyl acetate); Ethylene vinyl acetate; Blends; Electron beam irradiation; Ionizing radiation
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 15 Apr 2019 02:15
Last Modified: 15 Apr 2019 02:15
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.radphyschem.2016.09.023
URI: http://psasir.upm.edu.my/id/eprint/62114
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