Udel polysulfone (PSU) has been used successfully in a wide variety of membrane applications for over 25 years. It is the most cost-effective member of our sulfone polymers family and has become the industry standard in both reverse osmosis and hemodialysis membranes.

• Excellent mechanical properties
• Outstanding hydrolytic stability
• Stable at pH levels from 2 to 13
• Easy to form MF and UF membranes
• Soluble in conventional processing solvents
• Low level of cyclic dimer and higher oligomers
• Low level of insolubles and extractibles
• Excellent biocompatibility
• Sterilizable by steam, ethylene oxide and gamma radiation
• Global agency approvals for drinking water, food contact and healthcare applications
  

Key Benefits 

• Membranes with high flux and
  tailored selectivity
• Improved stability of dope solutions
• Minimize fiber breakage
• Reduce equipment clogging and fouling
• Minimal manufacturing defects

Chemical Structure

 

Typical Applications

• Hemodialysis
• RO/NF composite membrane support layer
• Low pressure water filtration
• Bioprocessing
• Food and beverage
• Gas separation