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Studies on cellulose acetate–polysulfone ultrafiltration membranes: I. Effect of polymer composition

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Abstract:

Ultrafiltration techniques have particular advantages for simultaneous purification, concentration and fractionation of macromolecules. Studies are presented on novel ultrafiltration membranes, based on cellulose acetate and polysulfone blends, for the separation of proteins and heavy metal ions. The effects of polymer composition on pure water flux, water content, molecular weight cut‐off and hydraulic resistance are discussed. Scanning electron microscopy images of the membranes show the presence of segregated individual domains of cellulose acetate and polysulfone. The molecular weight cut‐off obtained from the protein separation studies is also presented. Applications of these membranes for separating metal ions from aqueous streams are discussed. Copyright © 2005 Society of Chemical Industry

Keywords: cellulose acetate; membranes; molecular weight cut‐off; polysulfone; ultrafiltration

Document Type: Research Article

DOI: http://dx.doi.org/10.1002/pi.1798

Affiliations: 1: Membrane Laboratory, Department of Chemical Engineering, AC Tech, Anna University, Chennai-600 025, India 2: Central Salt and Marine Chemical Research Institute, Bhavanagar-364002, India 3: Department of Materials Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya-466 855, Japan

Publication date: June 1, 2005

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