Abstract
Thermoplastic polyester elastomers, or copolyesters (COPEs), are multiblock copolymers that are copolyether esters with alternating, random-length sequences of either long-chain or short-chain oxyalkalene glycols connected by ester linkages. Like polyurethanes and polyamide elastomers they have hard segments and soft segments. The microcrystalline networks of these segments dictate their physical properties. In this chapter, the synthesis and morphology of COPEs are described, as are the properties of commercial COPEs, such as stress–strain relationships; dynamics; chemistry; cut growth, impact, abrasion, and electrical resistance, and responses to changes in temperature. COPE blends and their benefits are described. Last, detailed features of COPE processing methods are explained.
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