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'''Acrylonitrile butadiene styrene,''' or ABS, ([[chemical formula]] <math>\mathrm{(C_8H_8\cdot C_4H_6\cdot C_3H_3N)_x}</math>) is a common [[thermoplastic]] used to make light, rigid, moulded products such as pipes, golf club heads (used for its good [[shock absorbance]]), automotive body parts, enclosures and toys including [[LEGO]] bricks. It is a [[copolymer]] made by polymerizing [[styrene]] and [[acrylonitrile]] in the presence of [[polybutadiene]]. The proportions can vary from 15% to 35% acrylonitrile, 5% to 30% [[butadiene]] and 40% to 60% styrene. The result is a long chain of polybutadiene criss-crossed with shorter chains of poly(styrene-co-acrylonitrile). The [[nitrile]] groups from neighbouring chains, being polar, attract each other and bind the chains together, making ABS stronger than pure [[polystyrene]]. The styrene gives the plastic a shiny, impervious surface. The butadiene, a [[rubber]]y substance, provides resilience even at low [[temperature]]s. ABS can be used between -25°C and +60°C.
Production of 1 kg of ABS requires the equivalent of about
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