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Cellulose acetate and polyetherimide blend ultrafiltration membranes: II. Effect of additive
Author(s) -
Nagendran Alagumalai,
Mohan Doraiswamy Raju
Publication year - 2008
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.965
Subject(s) - membrane , polyetherimide , ultrafiltration (renal) , materials science , aqueous solution , chemical engineering , cellulose acetate , cellulose , polyethylene glycol , casting , metal ions in aqueous solution , polymer chemistry , chromatography , metal , chemistry , organic chemistry , polymer , composite material , metallurgy , engineering , biochemistry
Ultrafiltration membranes are largely applied in the separation of heavy metal ion and macromolecular solutes from aqueous streams. Studies are presented on ultrafiltration blend membranes, based on cellulose acetate (CA) and polyetherimide (PEI) in various blend compositions. Polyethylene glycol (PEG 600) was employed as a non‐solvent additive in various concentrations to the casting solution to improve the ultrafiltration performance of the resulting membranes. The blend membranes prepared were characterized in terms of compaction time, pure water flux (PWF), water content, membrane resistance, and scanning electron microscopy (SEM). The molecular weight cut‐off (MWCO) obtained from the protein separation studies is also reported. Applications of these membranes for separating toxic metal ions from aqueous streams are discussed. Copyright © 2007 John Wiley & Sons, Ltd.