Blends of ground tire rubber devulcanized by microwaves/HDPE - Part B: influence of clay addition
Sousa, Fabiula Danielli Bastos de; Gouveia, Júlia Rocha; Camargo Filho, Pedro Mario Franco de; Vidotti, Suel Eric; Scuracchio, Carlos H.; Amurin, Leice Gonçalves; Valera, Ticiane Sanches
http://dx.doi.org/10.1590/0104-1428.1955
Polímeros: Ciência e Tecnologia, vol.25, n4, p.382-391, 2015
Abstract
The main objective of this work is to study the influence of clay addition on dynamically revulcanized blends of Ground Tire Rubber (GTR)/High Density Polyethylene (HDPE). GTR was previously devulcanized in a system comprised of a conventional microwave oven adapted with a motorized stirring, with a fixed microwave power and at various exposure times. The influence of clay addition on the final properties of the blends was evaluated in terms of mechanical, viscoelastic, thermal and rheological properties, with morphology being also analyzed. The results depict that the clay can modify the rheological behavior of the GTR phase, in addition to the thermal and mechanical properties of some blends.
Keywords
clay, recycling, GTR, devulcanization, HDPE.
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9. Zhang, S. L., Zhang, Z. X., & Kim, J. K. (2011). Study on thermoplastic elastomers (TPEs) of waste polypropylene/waste ground rubber tire powder. Journal of Macromolecular Science, Part B: Physics, 50(4), 762-768. http://dx.doi.org/10.1080/00222341003785144.
10. Abadchi, M. R., Arani, A. J., & Nazockdast, H. (2010). Partial replacement of NR by GTR in thermoplastic elastomer based on LLDPE/NR through using reactive blending: Its effects on morphology, rheological, and mechanical properties. Journal of Applied Polymer Science, 115(4), 2416-2422. http://dx.doi.org/10.1002/app.31356.
11. Punnarak, P., Tantayanon, S., & Tangpasuthadol, V. (2006). Dynamic vulcanization of reclaimed tire rubber and high density polyethylene blends. Polymer Degradation & Stability, 91(12), 3456-3462. http://dx.doi.org/10.1016/j.polymdegradstab.2006.01.012.
12. Kumar, C. R., Fuhrmann, I., & Karger-Kocsis, J. (2002). LDPE-based thermoplastic elastomers containing ground tire rubber with and without dynamic curing. Polymer Degradation & Stability, 76(1), 137-144. http://dx.doi.org/10.1016/S0141-3910(02)00007-1.
13. Rocha, M. C. G., Leyva, M. E., & de Oliveira, M. G. (2014). Thermoplastic elastomers blends based on linear low density polyethylene, ethylene-1-octene copolymers and ground rubber tire. Polímeros: Ciência e Tecnologia, 24(1), 23-29. http://dx.doi.org/10.4322/polimeros.2014.033.
14. Hong, C. K., & Isayev, A. I. (2001). Plastic/rubber blends of ultrasonically devulcanized GRT with HDPE. Journal of Elastomers and Plastics, 33(1), 47-71. http://dx.doi.org/10.1106/5AMQ-XEAY-A05B-P1FY.
15. Luo, T., & Isayev, A. I. (1998). Rubber/plastic blends based on devulcanized ground tire rubber. Journal of Elastomers and Plastics, 30(2), 133-160. http://dx.doi.org/10.1177/009524439803000204.
16. Kim, J. K., Lee, S. H., & Hwang, S. H. (2003). Study on the thermoplastic vulcanizate using ultrasonically treated rubber powder. Journal of Applied Polymer Science, 90(9), 2503-2507. http://dx.doi.org/10.1002/app.12907.
17. Scaffaro, R., Dintcheva, N. T., Nocilla, M. A., & La Mantia, F. P. (2005). Formulation, characterization and optimization of the processing condition of blends of recycled polyethylene and ground tyre rubber: mechanical and rheological analysis. Polymer Degradation & Stability, 90(2), 281-287. http://dx.doi.org/10.1016/j.polymdegradstab.2005.03.022.
18. Hassan, M. M., Badway, N. A., Elnaggar, M. Y., & Hegazy, E. A. (2014). Effects of peroxide and gamma radiation on properties of devulcanized rubber/polypropylene/ethylene propylene diene monomer formulation. Journal of Applied Polymer Science, 131(16), 1-10. http://dx.doi.org/10.1002/app.40611.
19. Satapathy, S., Nag, A., & Nando, G. B. (2010). Thermoplastic elastomers from waste polyethylene and reclaim rubber blends and their composites with fly ash. Process Safety and Environmental Protection, 88(2), 131-141. http://dx.doi.org/10.1016/j.psep.2009.12.001.
20. Naderi, G., Lafleur, P. G., & Dubois, C. (2007). Microstructure-properties correlations in dynamically vulcanized nanocomposite thermoplastic elastomers based on PP/EPDM. Polymer Engineering and Science, 47(3), 207-217. http://dx.doi.org/10.1002/pen.20673.
21. Baghaei, B., Jafari, S. H., Khonakdar, H. A., Rezaeian, I., As’habi, L., & Ahmadian, S. (2009). Interfacially compatibilized LDPE/POE blends reinforced with nanoclay: investigation of morphology, rheology and dynamic mechanical properties. Polymer Bulletin, 62(2), 255-270. http://dx.doi.org/10.1007/s00289-008-0010-2.
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