Preparation and characterization of acrylic acid-treated bacterial cellulose cation-exchange membrane

The feasibility of using bacterial cellulose as a source for environmentally compatible ion‐exchange membranes (IEM) was studied. Bacterial cellulose was modified with cation‐exchangeable acrylic acid (AAc) by UV‐graft polymerization to prepare membranes having ion‐exchange capacity (IEC) and greate...

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Bibliographic Details
Published in:Journal of chemical technology and biotechnology (1986) 2004-01, Vol.79 (1), p.79-84
Main Authors: Choi, Yong-Jin, Ahn, Yeonghee, Kang, Moon-Sung, Jun, Hong-Ki, Kim, In Soo, Moon, Seung-Hyeon
Format: Article
Language:English
Subjects:
acrylic acid modification
Applied sciences
bacterial cellulose
cation-exchange membrane
Chemical engineering
environmentally-compatible membrane
Exact sciences and technology
Ion exchange
UV polymerization
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Summary:The feasibility of using bacterial cellulose as a source for environmentally compatible ion‐exchange membranes (IEM) was studied. Bacterial cellulose was modified with cation‐exchangeable acrylic acid (AAc) by UV‐graft polymerization to prepare membranes having ion‐exchange capacity (IEC) and greater structural density. Fourier transform infrared (FTIR) spectra showed that acrylic acids were successfully bound to bacterial cellulose. Morphological changes of acrylic acid‐treated bacterial cellulose were examined through scanning electron microscopy. A dense structure of the membrane increased with increasing UV‐irradiation time. Acrylic‐modified bacterial cellulose membrane showed reasonable mechanical properties, such as tensile strength of 12 MPa and elongation of 6.0%. Also the prepared membranes were comparable to the commercial membrane CMX in terms of the electrochemical properties, ie IEC of 2.5 meq g−1‐dry mem, membrane electric resistance of 3 ohm cm2, and transport number of 0.89. Copyright © 2003 Society of Chemical Industry
ISSN:0268-2575
1097-4660
DOI:10.1002/jctb.942