Ion-Exchange Membranes Based on Polynorbornenes with Fluorinated Imide Side Chain Groups

Table 1

Density in Kg m⁻³, 𝜌, water uptake in Kg H₂O/Kg dry membrane, 𝑤_𝑢, IEC in equivalents of fixed anionic groups per Kg dry membrane obtained by titration, 𝑋⁻, and NMR, 𝑋⁻_NMR, molecules of water per fixed ionic group, 𝜆, and conductivity, 𝜎, in S/m, at 30°C.

Membrane	𝜌	𝑤𝑢	𝑋^−	𝑋^−NMR	𝜆𝑥−	𝜆𝑋^−NMR	𝜎
P5FNDIHS	1500	0.617	1.750	2.060	19.6	16.6	2.24
C5FNDIHS	1380	0.373	0.286	0.204	72.5	101.6	0.0134