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PK-enhanced Cation Exchange Membrane

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Catalog NumberACMA00062971

CategoryCation Exchange Membranes

DescriptionThis product is a PK-enhanced cation exchange membrane (CEM) with high hydroxyl blocking ability, high selectivity, high mechanical stability, and high stability in acidic and alkaline environments.
Density10 - 13 mg·cm-2
ApplicationProcess for concentrating alkaline solutions, electrodialysis and electrodialysis with bipolar membranes.
StorageDry form: Membranes can be stored dry for an unlimited period of time. However, the membrane must be conditioned (washed and rinsed) before use.
Wet form: Available for short- and medium-term storage (hours to weeks) in unsealed containers in 0.5 - 1.5 wt% NaCl solution or similar neutral pH electrolyte.
Backing FoilNone
Bubble Point> 3 bar (Test in Water)
Color FormBrown
Delivery FormDry
Dimensional Swelling0 - 2 %
Electrical Conductivity1 - 4 (in Na+ form) mS·cm-1
Elongation At Break20 - 50 %
Hydroxyl Transfer Rate5 - 50 µmol·min-1·cm-2
Ionic FormProtonic form (H+)
Non-Std Modulus1000 - 2000 MPa
Notice For UseMembranes are delivered in H and dry versions. Depending on the application and cell design, assembly can be done in dry (without pretreatment) or wet form.
For optimal performance, it is recommended to rinse the membrane in a NaCl solution (e.g., 0.5 M NaCl solution at 25°C for 24 hours) to remove any additives on the membrane.
Place the membrane sample between stabilizing mesh/spacers to avoid curling.
Do not let the film dry as micro-cracks may appear during shrinkage.
pH0 - 14
ReinforcementPK
Selectivity96 - 99 %
Sheet Resistance3 - 10 (in Na+ form) Ω·cm2
Size10 x 10 cm, 20 x 30 cm
Tensile Strength50 - 80 MPa
Thickness130 micrometers (5.1 mil)
Total Exchange Capacity0.6 - 0.8 (in Na+ form) meq/g
TypeCation
Water Absorption10 - 25 wt % (in H2O at 25°C)
Yield Strength20 - 30 MPa at 23°C / 52 % R.H.

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