What combination of polymers accounts for the majority of the global market share for hollow fiber membranes used in artificial kidneys?

💡 Explanation:

Hollow fiber membranes used in artificial kidneys must have high performance and antithrombogenic properties. Polysulfone-based polymers (PSf) and Polyvinylpyrrolidone (PVP) are the materials commonly used, accounting for approximately 90% of the global market.