The commonest elastomer content applied nowadays is a styrene-butadiene copolymer. It combines the Attributes of polybutadiene, which happens to be a very rubbery polymer (Tg = -100 °C) acquiring high hysteresis and thus presenting great wet grip properties, With all the Qualities of polystyrene, which is a glassy polymer (Tg https://jessey222xrk4.wikirecognition.com/user