Thursday, April 05, 2012

Copolyester Ether

Thermoplastic elastomers (TPE), sometimes referred to as thermoplastic rubbers, are a class of copolymers or a physical mix of polymers (usually a plastic and a rubber) which consist of materials with both thermoplastic and elastomeric properties.
Thermoplastic polyamides elastomers (COPA) consist of a regular linear chain of rigid polyamide segments interspaced with flexible polyether segments. They are basically segmented block copolymers having general structure.
Blends of Polycarbonate and thermoplastic copolyether ester elastomer (COPE) were made using a single screw extruder. The blend with 20 wt% of COPE gave optimum tensile properties. The elongation and strength at break were higher for this blend composition.
In commercial applications, COPEs can replace a variety of conventional materials, such as metal, cast polyurethane, leather, and rubber.

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