Polyethersulfone (PES) films are widely employed in the construction of membranes where there is a desire to make surface more hydrophilic. Therefore, UV photo-oxidation was studied order oxidize PES and increase hydrophilicity. using low pressure mercury lamps emitting both 253.7 184.9 nm radiation were compared with only photons. The modified surfaces characterized X-ray photoelectron spectro...

Aromatic nitration has been used to modify the polymer mam chain of polysulfone and polyethersulfone Alteration m the gas separation charactenstlcs of homogeneous membranes made out of these polymers could be observed upon nitration Generally, separation factors for gas mixtures of CO&H, increased while the permeability decreased Remarkably, a decreasing dlffuslvlty for both gases upon nitratio...

To generate polyethersulfone membranes with a biocatalytically active surface, pancreatin was covalently immobilized. Pancreatin is a mixture of digestive enzymes such as protease, lipase, and amylase. The resulting membranes exhibit self-cleaning properties after “switching on” the respective enzyme by adjusting pH and temperature. Thus, the membrane surface can actively degrade a fouling laye...