Polyetherimide
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Polyetherimide ( PEI ) is an amorphous, amber transparent, high-performance thermoplastic with the characteristics similar to PEEK. Relative to PEEK, it is less temperature-resistant, less expensive, and lower in impact strength. It is prone to stress cracking in chlorinated solvents. It is available under the tradename Ultem, a registered trademark of General Electric, the principle developer and manufacturer.
Glass transition temperature: 216°C
Amorphous density at 25°C: 1.27 g/cc
Repeat unit: C37H24O6N2
Molecular weight of repeat unit: 592 g/mol
Polyetherimide Repeat Unit: 2D
Image:Polyetherimide repeat unit.gif
Polyetherimide Repeat Unit: 3D
Image:Polyetherimide repeat unit 3D.png
See also
Acknowledgement and Attribution Regarding Sources of Content
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