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
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
Vaporized hydrogen peroxide