The effect of the same amount of precipitated silica nanofiller on the curing and dynamic properties of different rubbers including natural rubber (NR) without and with elemental sulfur addition (NR with S), synthetic polyisoprene (IR) , poly Butadiene (BR) and poly Styrene-Butadiene co- polymer (SBR) was investigated. The silica surfaces were pre-treated with bis [3-triethoxysilylpropyl) tetrasulfane (TESPT) to chemically bond silica to rubber. The rubbers were primarily cured by using sulfur in TESPT with addition of optimum accelerator (TBBS) and activator (ZnO) , which helped to form sulfur chemical bonds between the rubber and filler. Cure properties ,Mooney viscosity ,glass transition temperature ( ) , Bound rubber and crosslink density along with dynamic properties of filled rubbers including , tan , Loss modulus ( ) and Storage modulus ( ) were measured as a function of double oscillation amplitude (DSA) from 15 to 1000 ,temperature from -130 to 100 and frequency from 1 to 100 Hz and results with emphasis on potential for tire tread application , were discussed. It emerged that , SBR along with BR filled rubbers had the highest rolling resistance while IR filled rubber had the least. Moreover It seemed SBR filled rubber had the best skid resistance and BR filled rubber , the worst. Interestingly , variation versus DSA showed complicate behavior for different filled rubbers. It emerged that while in some DSA ranges, Payne effect was observed , in the remaining ranges , incremental of with DSA was seen. Due to bound rubber of most filled rubbers were more than %92 , there should be another predominant mechanism in studied systems rather than simply de agglomeration or filler network break down which proposed by Payne model. In addition nano scale of filler may be effective on this behavior.

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