Development of a polyvinylidene difluoride membrane for nanofiltration
| Autor: | Ivo F.J. Vankelecom, T. Van Dyck, C. Van Goethem, Matthias Mertens, Abaynesh Yihdego Gebreyohannes |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Technology
Engineering Chemical Materials science PVDF MEMBRANES Evaporation Polymer Science BLEND MEMBRANES Filtration and Separation 02 engineering and technology Permeance 010402 general chemistry 01 natural sciences Biochemistry Engineering WASTE-WATER Flat sheet General Materials Science Physical and Theoretical Chemistry Phase inversion (chemistry) Phase inversion MOLECULAR-WEIGHT CUTOFF chemistry.chemical_classification Polyvinylidene difluoride Cloud point Aqueous solution Science & Technology CAST POLY(VINYLIDENE FLUORIDE) PHASE INVERSION PARAMETERS Polymer RESISTANT NANOFILTRATION 021001 nanoscience & nanotechnology Nanofiltration 0104 chemical sciences Membrane chemistry Chemical engineering Physical Sciences 0210 nano-technology ORGANIC-SOLVENT NANOFILTRATION SRNF-MEMBRANES HOLLOW-FIBER MEMBRANES |
| Popis: | © 2018 Elsevier B.V. Integrally skinned asymmetric nanofiltration (NF) membranes are widely used for treating a variety of aqueous and solvent streams. Polyvinylidene difluoride (PVDF), is an excellent film forming polymer with outstanding chemical, thermal and mechanical stability. However, additive-free PVDF membranes with pores small enough to apply them in NF do not currently exist. By accurately tuning the phase inversion parameters (i.e. polymer concentration, co-solvent concentration and evaporation time), a membrane was obtained that retains for 80% a 327 Da solute from an aqueous solution at a permeance of 1.8 LMH/bar when operated at 10 bar. The membranes were characterised by XRD and SEM, while the membrane formation process was characterised using viscosity measurements and cloud point determinations. ispartof: JOURNAL OF MEMBRANE SCIENCE vol:557 pages:24-29 status: published |
| Databáze: | OpenAIRE |
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