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Polysulfone (PSU) is an amorphous polymer. Amorphous polymers do not have defined melting points but ranges at which they soften (called the glass transition temperature).
Polysulfone contains the subunit aryl-SO2-aryl (containing the sulfone group). It is known for holding its properties over a wide temperature range. PSU has the highest service temperature of all melt-processable thermoplastics. It has excellent strength and transparency; withstands exposure to water; and can be colored.
Glossary Of Terms
amorphous polymer
A polymer having no crystallinity; for example, polysulfone. See Thermoplastics.
| Property | Measure Low | Measure High |
|---|---|---|
| Specific gravity | 0.0448 lb./in.3 (1.24 g/cc) | 0.0448 lb./in.3 (1.24 g/cc) |
| Melting point | Not Applicable | Not Applicable |
| Glass transition temperature | 370°F (188°C) | 370°F (188°C) |
| Tensile strength at break | Not Available | Not Available |
| Elongation at break | 50% | 100% |
| Hardness durometer (Shore A) | Not Available | Not Available |
| Hardness durometer (Shore D) | Not Available | Not Available |
| Water absorption @ 24 hours | 0.22% | 0.3% |
| Sterilization | Ethylene oxide (EtO) Gamma and E-beam radiation Steam autoclaving Vaporized hydrogen peroxide |
This material data sheet is presented for reference only. For a specific application and environment, characteristics and performance may vary. Product design and suitability for use are the sole responsibility of Microspec’s customer. Microspec strongly urges customers to consult with the material manufacturer.