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Polyurethane and sulfonated polysulfone blend ultrafiltration membranes: II. Application studies
Author(s) -
Malaisamy Ramamoorthy,
Mohan Doraiswamy Raju,
Rajendran Munnuswamy
Publication year - 2003
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1077
Subject(s) - polysulfone , ultrafiltration (renal) , membrane , polymer chemistry , aqueous solution , polyurethane , ethylene glycol , bovine serum albumin , metal ions in aqueous solution , permeation , chemistry , polyethylene glycol , materials science , chemical engineering , chromatography , metal , organic chemistry , biochemistry , engineering
Ultrafiltration membranes are largely being applied for macromolecular and heavy metal ion separations from aqueous streams. Polyurethane‐ and sulfonated‐ polysulfone‐based membranes prepared in the absence and presence of the polymeric additive, poly(ethylene glycol) 600, in various compositions, were subjected to the rejection of macromolecular proteins, such as bovine serum albumin, egg albumin, pepsin and trypsin. Toxic heavy metal ions such as Cu 2+ , Ni 2+ , Cd 2+ and Zn 2+ were subjected to rejection by the blend membranes by complexing them with a polymeric ligand, polyethyleneimine. The effects of polymer blend compositions and additive concentrations on the rejection and permeate flux of both proteins and metal ions are discussed. The rejection and permeate flux efficiencies of the blend membranes are compared with pure sulfonated polysulfone membranes. © 2003 Society of Chemical Industry