Application and development of synthetic polymer membranes. VI. Pervaporation of aqueous ethanol solution through quaternized poly[3-(N′,N′-dimethyl) aminopropylacrylamide-co-acrylonitrile] membranes
| Autor: | Masakazu Yoshikawa, Wataru Eguchi, Masataka Tanigaki, Satoshi Ochiai |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Ethanol Materials science Polymers and Plastics Synthetic membrane General Chemistry Polymer Surfaces Coatings and Films chemistry.chemical_compound Membrane chemistry Chemical engineering Polymer chemistry Materials Chemistry Bound water Pervaporation Acrylonitrile |
| Zdroj: | Journal of Applied Polymer Science. 43:2021-2032 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.1991.070431109 |
| Popis: | Membranes obtained from polymers, quaternized poly[3-(N′,N′-dimethyl) aminopropylacrylamide-co-acrylonitrile]s, showed selective separation of water from aqueous ethanol solution by pervaporation. The separation factor toward water reached over 15,000. Membrane performance showed a good correlation to membrane polarity. Differential scanning calorimetric melting endotherms of the water-swollen membranes were studied to clarify the state of water in the membranes. The results suggested that there are two states of water in the membrane: bound and free. The higher the fraction of bound water in the membrane, clearly, the more preferentially was water permeated. |
| Databáze: | OpenAIRE |
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