Journal
WASTE MANAGEMENT
Volume 78, Issue -, Pages 238-248Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.wasman.2018.05.054
Keywords
Vegetable derived-oil; Waste tire rubber; Reclaiming mechanism; Carbon black migration; Rubber reinforcement
Categories
Funding
- Jiangsu Science and Technology Project [BA2016002]
- Guangzhou Science and Technology Project [201604020126]
- Natural Science Foundation of China [51273110]
- research group of Prof. Isayev of University of Akron
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Three dimensional chemically cross-linked polymer networks present a great challenge for recycling and reutilization of waste tire rubber. In this work, the covalently cross-linked networks of ground tire rubber (GTR) were degraded heterogeneously under 150 degrees C due to the synergistic effects of the soybean oil and controlled oxidation. The degradation mechanism was discussed using Horikx theory and Fourier transformation infrared spectroscopy (FTIR). The results showed that the structural evolution of sol and gel parts, which indicated that the sols consisted of degraded GTR chains with low molecular weight, while the gels were mainly composed of bound rubber coated carbon black, which are separated from the cross linked network of GTR in a high degradation degree. The degraded GTR compound demonstrated an excellent reinforcing effect on solution styrene-butadiene rubber (SSBR), due to the presence of core shell structured carbon black. This work provide an efficient and economic approach to degrade GTR and transform it into useful products. (C) 2018 Elsevier Ltd. All rights reserved.
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