The Utilization of Ground Tire Rubber as Ion Exchange Materials

Abstract:

In this study, ground tire rubber (R-GTR) with the average particle size of 456 µm was chemically modified to produce modified ground tire rubber (M-GTR) that can work as ion exchange materials. The modification was performed by oxidation reaction. The ground tire rubber was oxidized at the range of temperature from 20 to 40^๐C for 48, 72 and 96 hours by a mixture of the HNO₃ /H₃PO₄/NaNO₂ system. The HNO₃/H₃PO₄ ratio was 1:3 and the concentration of NaNO₂ was 1.4% w/v. FT-IR revealed that the carboxyl group or the carbonyl group was successfully introduced into the modified ground tire rubber and SEM images demonstrated that the porosity of modified ground tire rubber increased. The results of the modified ground tire rubber showed that the carboxyl content increased with an increase of reaction time while %yield decreased with an increase of reaction time. The optimum condition for modification was the reaction at 30^๐C for 96 hours.

• Periodical: Defect and Diffusion Forum (Volume 382)
• Pages: 352-356
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.382.352
• Online since: January 2018
• Authors: Supitcha Rungrodnimitchai*, Sirinapa Mayod, Sutamma Tanasarn
• Keywords: Chemical Modification, Ground Tire Rubber, Ion Exchange Materials, Oxidation

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