Perfluorinated PFA reinforced Cation Exchange Membrane

Catalog NumberACMA00062963

CategoryCation Exchange Membranes

Description	This is a Perfluorinated PFA reinforced Cation Exchange Membrane (CEM) with low resistance, high mechanical stability, high selectivity and high chemical / oxidative stability, and resistance to chlorine.
Density	25 - 30 mg·cm-2
Application	Electrochemical processes requiring cation exchange membranes with high oxidative stability and high resistance to chlorine (e.g. for electrolysis, for electrode protection in electrodialysis, and others).
Storage	The membrane can be stored dry for an unlimited amount of time. However, the membrane has to be conditioned (washed and rinsed) prior to use.
Backing Foil	PET Foil
Bubble Point	> 3 bar (Test in Water)
Color Form	Transparent / Colorless
Delivery Form	Dry (non-activated)
Dimensional Swelling	8 - 12 (in H-form) %
Electrical Conductivity	6 - 9 (Na+ form) mS·cm-1
Elongation At Break	20 - 50 %
Hydroxyl Transfer Rate	250 - 400 µmol·min-1·cm-2
Ionic Form	H-form
Non-Std Modulus	400 - 700 MPa
Notice For Use	The membrane is delivered in H-form and dry form (non-activated). In many applications no further pretreatment is required. However, for optimum performance and lowest resistance it is recommended to pretreat the membrane according to the following prescription: Put the membrane sample in an aqueous 10 wt% HNO3 solution or in 5 vol % H2SO4 solution at minimum 80°C for at least 12 hours. After rinsing with demineralized water (pH ~ 7) the membrane is ready for use (activated). Membranes will expand and contract based on moisture content.
pH	0 - 14
Reinforcement	PFA
Selectivity	94 - 98 %
Sheet Resistance	1.8 - 2.9 (Na+ form) Ω·cm2
Size	20cm x 30cm
Tensile Strength	15 - 20 MPa
Thickness	140 - 150 micrometers (5.51 - 5.91 mil)
Total Exchange Capacity	0.7 - 0.9 meq/g
Type	Cation
Water Absorption	15 - 25 (in H2O at 25°C in H-form) wt %