HYDROPHILIC POLYETHERSULFONE FILTRATION MEMBRANE, METHOD FOR PRODUCTION THEREOF, AND STOCK SOLUTION OF PRODUCTION OF MEMBRANE

摘要

Disclosed is a hydrophilic filtration membrane which has high chemical resistance, high strength, high water-permeability, high rejection performance and high stain resistance. The hydrophilic filtration membrane comprises a hydrophilic polyethersulfone having an angle of contact of 65 to 74° and a molecular weight of 10,000 to 100,000, and containing 0.6 to 1.4 hydroxy groups per 100 polymerizable repeating units. The hydrophilic filtration membrane may additionally comprise a polyvinylpyrrolidone having a molecular weight of 10,000 to 1,300,000.