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Fumasep FAD-PET-75 is a PET (Polyester) reinforced Anion Exchange Membrane (AEM) with low resistance, high acid transfer rate, high mechanical stability, and high stability in acidic environment. The polymer backbone for this membrane is based on a proprietary hydrocarbon resin.
Fumasep FAD-PET-75 membrane comes in either a 10cm x 10cm or 20cm x 30cm size sheet. When it is delivered it will be the brown foil membrane delivered in wet form. The membrane is ready for use when it arrives.
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.
• Application: Diffusion dialysis for acidic solutions (e.g. H2SO4-).
• Anion Exchange Membrane
• Stability range (pH) at 25 ºC: 1 - 9
• Thickness: 70 - 80 micrometers (2.75 - 3.15 mil)
• Sizes: 10cm x 10cm, 20cm x 30cm
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.
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 biocide to avoid biological fouling.
Membranes will expand and contract based on water / electrolyte content. To eliminate wrinkling, it is necessary to expand membranes before mounting by pretreatment. Do not let the membrane dry out since micro-cracks may likely occur during shrinkage.
The membrane is delivered in chloride form and wet form. The membrane changes dimensions based on its water content. When assembling and during cell operation do not let the membrane dry out since micro-cracks may likely occur during shrinkage.
Please note that a current lead time of one to two weeks is to be expected.
|Membrane||Anion Exchange Membrane|
|Thickness||60 - 80 µm (microns)|
|Appearance / Color||Light-Brown|
|Tensile Strength - max. (MPa)||40 - 70 MPa|
|Density||7.0 - 8.5 mg•cm-2|
|Non-Std Modulus (MPa)||1200 - 2000 MPa|
|Yield Strength at 23°C / 50 % R.H.||15 - 25 MPa|
|Elongation to Break (%)||15 - 50 %|
|Specific Area Resistance||0.25 - 0.50 (in Cl- form) Ω•cm2|
|Specific Conductivity||15 - 25 (in Cl- form) mS•cm-1|
|Counter Ion||Chloride Form (Cl-)|
|Ion Exchange Capacity||2.0 - 2.3 (in Cl- form) meq•g-1|
|Selectivity||91 - 95 %|
|Uptake in H2O at 25°C||20 - 30 wt %|
|Dimensional Swelling in H2O at 25°C||0 - 2 %|
|Proton Transfer Rate||2000 - 5000 µmol•min-1•cm-2|
|Bubble Point Test in Water at 25°C||> 3 bar|
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