PEEK-enhanced Cation Exchange Membrane

Catalog Number	ACMA00062960
Description	This product is a PEEK enhanced cation exchange membrane (CEM) with low resistance, high selectivity, high mechanical stability, high stability in acidic pH and corrosive environments, and high OH blocking capability.
Density	10 - 13 mg·cm-2
Application	Designed for Electrodialysis and Bipolar Electrodialysis (as separator between feed and acid chamber).
Storage	Dry 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 Foil	None
Bubble Point	> 3 bar (Test in Water)
Color Form	Brown
Delivery Form	Dry
Dimensional Swelling	0 - 2 %
Electrical Conductivity	2 - 8 (in Na+ form) mS·cm-1
Elongation At Break	20 - 50 %
Hydroxyl Transfer Rate	5 - 100 µmol·min-1·cm-2
Ionic Form	Protonic form (H+)
Non-Std Modulus	1000 - 2000 MPa
Notice For Use	Membranes 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.
pH	0 - 14
Reinforcement	PK
Selectivity	96 - 99 %
Sheet Resistance	2.5 - 5.0 (in Na+ form) Ω·cm2
Size	10 x 10 cm, 20 x 30 cm
Tensile Strength	50 - 80 MPa
Thickness	110 - 140 micrometers (4.3 - 5.5 mil)
Total Exchange Capacity	0.8 - 1.0 (in Na+ form) meq/g
Type	Cation
Water Absorption	10 - 30 wt % (in H2O at 25°C)
Yield Strength	15 - 30 MPa at 23°C / 51 % R.H.