Table 1. Formulations of Test Sample Compounds.

Compositions
	SBR (phrc)	Stearic acid (phr)	CBSa (phr)	DDb (phr)	Zinc oxide (phr)	Sulfur (phr)	Silica	Bamboo Charcoal (phr)	SI-CS-PVA-SBR (phr)	BC-CS-PVA-SBR (phr)
Neat SBR	100	2	2	0.5	3	1.75	0	0	0	0
SI-SBR	100	2	2	0.5	3	1.75	10	0	0	0
BC-SBR	100	2	2	0.5	3	1.75	0	10	0	0
SI-CS-PVA-SBR	100	2	2	0.5	3	1.75	0	0	10	0
BC-CS-PVA-SBR	100	2	2	0.5	3	1.75	0	0	0	10

N-Cyclohexyl-2-benzotdiazole-sulfonamide.
2,2-Dibenzotdiazolyl disulfide.
phr, part per hundreds of rubber.