Effective Thermal-Oxidative Reclamation of Waste Tire Rubbers for Producing High-Performance Rubber Composites

Effective Thermal-Oxidative Reclamation of Waste Tire Rubbers for Producing High-Performance Rubber Composites. Zhang, Y., Zhang, Z., Wemyss, A. M., Wan, C., Liu, Y., Song, P., & Wang, S. ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 8(24):9079–9087, June, 2020.
doi abstract bibtex

The disposal and accumulation of waste tire rubbers has a significant negative impact on the development of a circular economy and sustainable environment. To reuse and recycle ground tire rubber, we developed a thermal-oxidative reclamation process using a newly designed dynamic reclamation reactor. In the absence of any chemical agent, a high scission efficiency was achieved at a sol fraction of 66.53 wt % at 200 degrees C after 20 min from the thermal oxidation of GTR. The physical and chemical structural evolutions of GTR during the thermo-oxidation process were systemically investigated by monitoring the Mooney viscosity, sol-gel ratio, molecular weight, and chemical structure changes. The reclaimed ground tire rubber containing ultrafine fillers and soluble elastomer can be easily dispersed into a natural rubber matrix. The mechanical properties and aging resistance of the modified natural rubber were enhanced with the addition of up to 40 wt % reclaimed ground tire rubber. This work demonstrates a green and up-scalable approach for reclamation and reuse of waste tire rubbers for a sustainable rubber industry.

@article{zhang_effective_2020,
	title = {Effective {Thermal}-{Oxidative} {Reclamation} of {Waste} {Tire} {Rubbers} for {Producing} {High}-{Performance} {Rubber} {Composites}},
	volume = {8},
	issn = {2168-0485},
	doi = {10.1021/acssuschemeng.0c02292},
	abstract = {The disposal and accumulation of waste tire rubbers has a significant negative impact on the development of a circular economy and sustainable environment. To reuse and recycle ground tire rubber, we developed a thermal-oxidative reclamation process using a newly designed dynamic reclamation reactor. In the absence of any chemical agent, a high scission efficiency was achieved at a sol fraction of 66.53 wt \% at 200 degrees C after 20 min from the thermal oxidation of GTR. The physical and chemical structural evolutions of GTR during the thermo-oxidation process were systemically investigated by monitoring the Mooney viscosity, sol-gel ratio, molecular weight, and chemical structure changes. The reclaimed ground tire rubber containing ultrafine fillers and soluble elastomer can be easily dispersed into a natural rubber matrix. The mechanical properties and aging resistance of the modified natural rubber were enhanced with the addition of up to 40 wt \% reclaimed ground tire rubber. This work demonstrates a green and up-scalable approach for reclamation and reuse of waste tire rubbers for a sustainable rubber industry.},
	number = {24},
	urldate = {2020-07-14},
	journal = {ACS SUSTAINABLE CHEMISTRY \& ENGINEERING},
	author = {Zhang, Yuxin and Zhang, Zhen and Wemyss, Alan M. and Wan, Chaoying and Liu, Yongtao and Song, Pan and Wang, Shifeng},
	month = jun,
	year = {2020},
	pages = {9079--9087},
}

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