Bacterial cellulose membrane as separation medium

A thin membrane of bacterial cellulose (BC) obtained from Acetobacter culture was tested for its performance as a dialysis membrane in aqueous systems. The BC membrane showed superior mechanical strength to that of a dialysis‐grade regenerated cellulose membrane, allowing the use of a thinner membra...

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Bibliographic Details
Published in:Journal of applied polymer science 1993-11, Vol.50 (6), p.965-969
Main Authors: Shibazaki, Hideki, Kuga, Shigenori, Onabe, Fumihiko, Usuda, Makoto
Format: Article
Language:English
Subjects:
ALCOHOLS
Applied sciences
AQUEOUS SOLUTIONS
BACTERIA
CARBOHYDRATES
CELLULOSE
DISPERSIONS
ENVIRONMENTAL SCIENCES
Exact sciences and technology
Exchange resins and membranes
Forms of application and semi-finished materials
GLYCOLS
HYDROXY COMPOUNDS
MEMBRANES
MICROORGANISMS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PERMEABILITY
POLYETHYLENE GLYCOLS
Polymer industry, paints, wood
POLYMERS
POLYSACCHARIDES
SACCHARIDES
SEPARATION PROCESSES
SOLUTIONS 540320 > Environment, Aquatic-- Chemicals Monitoring & Transport-- (1990-)
Technology of polymers
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Summary:A thin membrane of bacterial cellulose (BC) obtained from Acetobacter culture was tested for its performance as a dialysis membrane in aqueous systems. The BC membrane showed superior mechanical strength to that of a dialysis‐grade regenerated cellulose membrane, allowing the use of a thinner membrane than the latter. As a result, the BC membrane gave higher permeation rates for poly(ethylene glycols) as probe solutes. The cutoff molecular weight of the original BC membrane, significantly greater than that of regenerated cellulose, could be modified by concentrated alkali treatments of the membrane. The nature of the change at the ultrastructural level caused by the alkali treatments was studied by X‐ray diffraction and scanning electron microscopy. © 1993 John Wiley & Sons, Inc.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1993.070500605