Dynamic membranes are formed in situ when a dilute solution of one or more specific additives is passed over the surface of a porous support. Zirconium (iv) species are polymerised in aqueous solution and polymerisation increases with decreasing acidity. At concentrations as low as 10 -4 molar zirc
Dynamically formed hydrous zirconium (IV) oxide-polyelectrolyte membranes VIII. Alternative substrate materials for dynamic membranes
✍ Scribed by A.J. Van Reenen; E.P. Jacobs; R.D. Sanderson
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 538 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0011-9164
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✦ Synopsis
Polyester-supported (poly(ary1 ether sulfone) ultra-and microfiltration membranes were evaluated as substrates on which to dynamically form hydrous zirconium (IV) oxide-polyelectrolyte membranes. These substrates were used in both the flat sheet and tubular form. The initial results obtained with a few of these materials were promising.
📜 SIMILAR VOLUMES
A non-homogeneous poly (acrylic acid-covinyl alcohol) copolymer (I ) was synthesized. This copolymer was used as polyelectrolyte in a dynamically formed hydrous zirconium (IV) oxide-polyelectrolyte membrane. The resultant Zr (I) membrane gave salt rejection figures exceeding 99% and flux values of 2
A series of poly (acrylic acid-covinyl acetate) (I) copolymers were synthesized. Selected copolymers were hydrolyzed fully to give the corresponding poly (acrylic acid-covinyl alcohol) (II) copolymers. One of the (I) copolymers was partially hydrolyzed to yield two poly (acrylic acid-covinyl acetate
A series of poly(acrylic acid co-vinyl acetate) (I) copolymers, as well as a series of poly(acrylic acid-co-vinyl alcohol) (II) copolymers were synthesized. Hydrous zirconium (IV) oxide-(I) and (II) dynamic membranes were formed. The effect of feed salt concentration on the re\_jection and flux of t