Table 3 Proximate and ultimate analyses of the studied tires.
Description | S1 | S2 | S3 | S4 | S5 | S6 | S7 | S8 |
|---|---|---|---|---|---|---|---|---|
Proximate analysis (wt%, as received) | ||||||||
Moisture | 1.88 | 1.26 | 0.96 | 1.21 | 1.35 | 0.81 | 0.35 | 0.15 |
Ash | 6.8 | 5.83 | 4.5 | 7.81 | 8.59 | 9.01 | 9.42 | 7.26 |
Volatile matter | 66.4 | 66.5 | 65.1 | 64.6 | 62.6 | 62.3 | 61.7 | 65.6 |
Fixed carbon | 25.01 | 26.31 | 29.4 | 27.01 | 27.52 | 28.12 | 28.59 | 27.13 |
Ultimate analysis (wt%, dry basis) | ||||||||
Carbon | 86.5 | 87.4 | 86.1 | 85.3 | 87.3 | 88.1 | 85.9 | 86.1 |
Hydrogen | 6.9 | 6.5 | 7.2 | 7.6 | 6.4 | 6.5 | 7.6 | 7.2 |
Oxygen (Ash free) | 4.8 | 4.5 | 4.9 | 5.2 | 4.5 | 3.6 | 4.6 | 4.9 |
Nitrogen | 0.46 | 0.48 | 0.59 | 0.52 | 0.53 | 0.52 | 0.61 | 0.49 |
Sulfur | 1.33 | 1.21 | 1.26 | 1.36 | 1.29 | 1.30 | 1.38 | 1.35 |
Rubber composition(wt%) | ||||||||
Natural rubber (NR) | 75.1 | 76.3 | 76.5 | 74.6 | 75.4 | 76.3 | 75.5 | 75.2 |
Styrene butadiene rubber (SBR) | 17.4 | 16.3 | 15.1 | 16.3 | 16.4 | 14.1 | 16.1 | 16.5 |
Butadiene rubber (BR) | 7.5 | 7.4 | 8.4 | 9.1 | 8.2 | 9.6 | 8.4 | 8.3 |
