Dependence of Performance of Poly(Sulfone‐co‐Amide) Membranes on Compositional Variation of Casting Solution and Coagulation Media—Development of Reverse Osmosis and Nano Filtration Membranes
| Autor: | B. M. Misra, T. K. Dey, M. S. Hanra, Ramesh C. Bindal |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Diphenyl sulfone Process Chemistry and Technology General Chemical Engineering Filtration and Separation General Chemistry Chloride Sulfone Solvent chemistry.chemical_compound Dicarboxylic acid Membrane chemistry Polymer chemistry medicine Terephthaloyl chloride medicine.drug Nuclear chemistry |
| Zdroj: | Separation Science and Technology. 39:581-601 |
| ISSN: | 1520-5754 0149-6395 |
| DOI: | 10.1081/ss-120027996 |
| Popis: | Poly(sulfone‐co‐amide) polymer was synthesized by a low temperature solution polycondensation technique from benzene 1,3 dicarboxylic acid chloride (isophthaloyl chloride), benzene 1,4 dicarboxylic acid chloride [terephthaloyl chloride (TPC)], and bis[4‐amino phenyl] sulfone, i.e., (4,4′‐diamino diphenyl sulfone) as monomers using N,N dimethyl acetamide (DMAc) as solvent cum acid acceptor. Casting solutions using various combinations of DMAc and acetone as solvent and LiCl and LiNO3 as additives were prepared. Wet phase inversion membranes were prepared from them at ambient temperature (25°C) using demineralized water (DMW) or aqueous sodium dodecyl sulfate (SDS) as coagulation media. Solute rejections of the membranes increased and solvent flux decreased with increasing proportion of acetone and decreasing DMAc content in the casting solution. Use of 1% and 2% aqueous SDS solution as gelling media improved the flux of the membranes significantly. Evaporation of solvent at room temperature prior ... |
| Databáze: | OpenAIRE |
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