Table 5: Values of activation energy ( and ) of snail shell powder filled natural rubber (filler particle size, 0.075 μm).

SolventFiller content (g) (KJ/mol) (KJ/mol)

2−30.60 × 102−18.15 × 102
5−30.92 × 102−21.14 × 102
Benzene10−45.86 × 102−37.69 × 102
15−55.29 × 102−41.51 × 102
20−53.16 × 102−49.86 × 102

2−24.79 × 102−13.51 × 102
5−36.65 × 102−25.39 × 102
Toluene10−91.59 × 102−14.05 × 102
15−26.69 × 102−16.37 × 102
20−23.96 × 102−14.07 × 102

2−7.98 × 102−4.22 × 102
5−1.35 × 102−4.98 × 102
Xylene10−11.99 × 102−3.88 × 102
15−12.09 × 102−5.12 × 102
20−12.69 × 102−8.53 × 102