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Fumasep FAA-3-PE-30 is an anion exchange membrane - PE-reinforced with low resistance, high selectivity, high mechanical stability, and high stability in pH acidic and basic environment. The polymer backbone for this membrane is based on a proprietary hydrocarbon resin.
Fumasep FAA-3-PE-30 membrane comes in either a 10cm x 10cm or 20cm x 30cm size sheet.
Fumatech membranes are highly sensitive to differences in humidity and moisture content. Therefore the membranes can vary +/- 0.5cm from the original cut sizes. Also due to this sensitivity the manufacturer expects wrinkles to form, however soaking the membranes in deionized water will return the membranes to the full size planar state according to the manufacturer.
• Applications: Electrodialysis for demineralisation, desalination applications, capacitive deionization and others
• Anion Exchange Membrane
• Thickness (dry): 20 - 30 micrometers (0.78 - 1.1 mil)
• Sizes: 10cm x 10cm, 20cm x 30cm
The membrane is the thin brown foil, delivered on a backing foil (colourless rigid PET foil). Pull off carefully the membrane (brown) from the backing foil. The membrane is delivered in dry form.
Keep membrane package closed / sealed when unused. Store, handle and process the membrane in a clean and dust-free area. Use only new and sharp knives or blades, when cutting the membrane. Always wear protective gloves when handling the membrane. Handle with care, be sure not to puncture, crease or scratch the membrane, otherwise leaks will occur. All surfaces in contact with the membrane during handling, inspection, storage and mounting must be smooth and free of sharp projections.
Dry form: Storage for long time scale (> 12 month) may be done in dry state (sealed container). Wet form: Storage for short and medium time scale (hours up to several weeks) may be done in unsealed containers in 0.5 – 1.5 wt% NaCl solution or comparable neutral pH electrolytes. For storage over a longer time period a sealed container is recommended using afore said electrolyte with ca. 100 ppm biocide (e.g. NaN3) to avoid biological fouling.
The membrane is delivered in bromide form and dry form. Depending on application and cell design, assembling is possible in dry form (without pretreatment) or wet form. For optimum performance it is recommended to rinse the membrane in NaCl solution (e.g. 0.5 M NaCl solution at T = 25 °C for 24 hrs) to remove any additive from the membrane. Place the membrane sample between stabilizing meshes / spacers in order to avoid curling. Do not let the membrane dry out since micro-cracks may likely occur during shrinkage.
If you have any concerns about storage, chemical stability, and pretreatment please feel free to contact us for further information.
Please note that a current lead time of four to six weeks is to be expected.
|Membrane||Anion Exchange Membrane|
|Thickness||20 - 30 µm (microns)|
|Appearance / Color||Brown, Slightly Opaque|
|Backing Foil||PET foil|
|Tensile Strength - max. (MPa)||40 - 50 MPa|
|Yield Strength at 23°C / 50 % R.H.||30 - 40 MPa|
|Elongation to Break (%)||30 - 50|
|Area Specific Resistance (ohm cm²)||0.8 – 1.3|
|Specific Conductivity||1.5 – 2.0 mS cm^-1|
|Young’s modulus at 23 °C / 50 % r.h.||1000 - 1500 MPa|
|Counter Ion||Bromide form|
|Ion Exchange Capacity||1.4 - 1.6 mmol g^-1|
|Selectivity||94 - 98% (0.1 / 0.5 mol/kg KCl at T = 25 °C)|
|Uptake in H2O at 25°C||15 – 20 wt%|
|Weight Per Unit Area||2.0 – 2.8 mg cm^-2|
|Dimensional Swelling in H2O at 25°C||0 - 1%|
|Proton Transfer Rate||1000 – 2000 μmol min^- 1 c m^-2|
|Bubble Point Test in Water at 25°C||> 3 bar|
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