Styrene-butadiene block copolymers are an important class of Thermoplastic Elastomer. They are based on block copolymers having a rubber center block and two polystyrene end blocks. SBS elastomers combine the properties of a thermoplastic resin with those of butadiene rubber. The hard, glassy styrene blocks provide mechanical strength and improve the abrasion resistance, while the rubber mid-block provides flexibility and toughness.
SBS is often blended with other polymers to enhance their performance. Often oil and fillers are added to lower cost or to further modify their properties.
Used as an Impact Modifier and Tougheners in plastics and adhesives application
