Nafion 212

Nafion 212
Nafion 212
Brand: Dupont
Product Code: N212
Availability: In Stock
Price: $26.00

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Untreated Nafion 212 is 50.8 micrometers (2 mil) thick. The membrane is positioned between a backing film and a coversheet.

DuPont™ Nafion® 212 membranes are based on chemically stabilized perfluorosulfonic acid/PTFE copolymer in the acid (H+) form, and exhibit substantially lower fluoride ion release compared to the non-stabilized polymer – a sign of improved chemical durability. Nafion PFSA membranes are widely used for Proton Exchange Membrane (PEM) fuel cells and water electrolyzers. The membrane performs as a separator and solid electrolyte in a variety of electrochemical cells that require the membrane to selectively transport cations across the cell junction. The polymer is chemically resistant and durable.

View the Nafion product data sheets below for more information on each type:

Properties
Thickness 50.8 micrometers (2 mil)
Basic Weight (g/m²) 100
Tensile Strength - max. (MPa) 32 (MD), 32 (TD) - Method: ASTM D 882
Non-Std Modulus (MPa) 266 (MD), 251 (TD) - Method: ASTM D 882
Elongation to Break (%) 343 (MD), 352 (TD) - Method: ASTM D 882
Hydrogen Crossover (ml/min·cm²) < 0.010
Specific Gravity (23 °C, 50% RH) 1.97
Available Acid Capacity (meq/g) 0.92 min.
Total Acid Capacity (meq/g) 0.95 to 1.01
Hydrolytic Properties
Water content (% water) 5.0 ± 3.0% - Method: ASTM D 570
Water uptake (% water) 50.0 ± 5.0% - Method: ASTM D 570
Linear Expansion % increase - 50% RH, 23°C to water soaked 23°C 10 - Method: ASTM D 570
Linear Expansion % increase - 50% RH, 23°C to water soaked 100°C 15 - Method: ASTM D 570