Truly chlorine-resistant polyamide reverse osmosis composite membrane
โ Scribed by Shaoyu Wu; Can Zheng; Guodong Zheng
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 154 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0021-8995
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โฆ Synopsis
Truly chlorine-resistant polyamide reverse osmosis composite membranes were prepared by cross-linking the interface of the composite membrane. Such membranes possessed chlorine resistance one order of magnitude more than those of the commercially used polyamide composite membranes. The effect of the degree of cross-linking on chlorine resistance was also described.
๐ SIMILAR VOLUMES
New asymmetric hollow fiber reverse osmosis (RO) membrane was developed from a new chlorine-resistant copolyamide [4T-PIP(30)] with a piperazine moiety by a conventional phase-separation method. The new 4T-PIP(30) hollow fiber membrane has the same low-pressure RO performance as cellulose triacetate
The surface of aromatic polyamide reverse osmosis composite membrane was modified by oxygen and argon plasma. The water permeability of oxygen-plasmamodified membrane increases, and the chlorine resistance of argon-plasma-modified membrane increases. The spectra of the attenuated total reflection-Fo
Copolyamides were prepared from mixed diamine components of 3,3ะ-or 4,4ะ-diaminodiphenylsulfone, piperazine, and dichlorides such as isophthaloyl or terephthaloyl. The obtained copolyamides are random copolymers, which have good solubilities in organic solvents and good mechanical properties, even i