Abstract
This chapter on styrenic plastics covers a broad class of polymeric materials of which an important part is styrene. Styrene is also known as vinyl benzene. It is used as a monomer to make plastics such as polystyrene, acrylonitrile butadiene styrene (ABS), styrene acrylonitrile (SAN), and the other polymers. Copolymerization of styrene with maleic anhydride creates a copolymer called styrene maleic anhydride (SMA). SMA has a higher glass transition temperature than polystyrene and is chemically reactive because of active functional groups. Thus, SMA polymers are often used in blends or composites where interaction or reaction of the maleic anhydride provides for desirable interfacial effects. Further, styrenic block copolymer, or SBC, is a commercially important thermoplastic elastomer. While the number of styrenic blends might seem limitless, compatibility and morphology limit blend types. Styrenic blends are numerous but most are limited to only a couple of types. The most important blend is ABS and polycarbonate (PC).
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