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The microstructure of synthetic rubbers correlating to their features,such as rolling resistance and abrasion loss,wet grip[1],the selective polymerization of butadiene and isoprene is a perpetual topic.To balance the "devil triangle" of the tire[2],the promising approach should be synthesizing the random copolymer composed by many components with different regularity as the block copolymer might exist micro-phase separation,which usually does not benefit for exerting the synergetic effects[3].