Fabrication of thin-film composite membranes with pendant, photoreactive diazoketone functionality
✍ Scribed by J. Ji; B. J. Trushinski; R. F. Childs; J. M. Dickson; B. E. McCarry
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 927 KB
- Volume
- 64
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
A disulfonyl chloride monomer having a pendent photoreactive diazoketone functional group has been synthesized in high overall yield ( ú90%). The synthesis involves a convenient two-step reaction sequence starting from commercially available 6-diazo-5-oxo-5,6-dihydro-1-naphthalenesulfonyl chloride, which was reacted with piperazine then 1,3,6-naphthalenetrisulfonyl chloride to give the disulfonyl chloride diazoketone. Thin-film composite membranes having photoreactive diazoketone moieties as side chains of a polysulfonamide have been successfully fabricated by interfacial polymerization of ethanediamine with the disulfonyl chloride diazoketone on a polysulfone support. The effect of polymerization parameters such as monomer concentration, polymerization time, crosslinking, and surfactant have been systematically investigated in terms of membrane morphology and permeation properties.