Bacterial cellulose membrane as separation medium

Journal Article · Wed Nov 10 00:00:00 EST 1993 · Journal of Applied Polymer Science; (United States)

DOI:https://doi.org/10.1002/app.1993.070500605· OSTI ID:5697339

Shibazaki, Hideki; Kuga, Shigenori; Onabe, Fumihiko; Usuda, Makoto ^[1]

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1. Univ. of Toyko, (Japan). Faculty of Agriculture

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.

• OSTI ID: 5697339
• Journal Information: Journal of Applied Polymer Science; (United States), Vol. 50:6; ISSN 0021-8995
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
MEMBRANES
PERMEABILITY
POLYETHYLENE GLYCOLS
SEPARATION PROCESSES
AQUEOUS SOLUTIONS
BACTERIA
CELLULOSE
ALCOHOLS
CARBOHYDRATES
DISPERSIONS
GLYCOLS
HYDROXY COMPOUNDS
MICROORGANISMS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYSACCHARIDES
SACCHARIDES
SOLUTIONS
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)