Table 6. Properties of the Obtained Block Copolymers.
swelling
ratio |
|||||||
---|---|---|---|---|---|---|---|
run | electrolyte | EWa (g/equiv) | densityb (g/cm3) | NHc (mmol/cm3) | water uptake (%) | in-plane (%) | through-plane (%) |
1 | block copolymer 1 | 510 | 2.31 | 4.5 | 113 | 44 | 34 |
2 | block copolymer 2 | 558 | 2.27 | 4.1 | 153 | 36 | 25 |
3 | Nafion112 | 1075 | 2.03 | 1.9 | 22 | 14 | 13 |
4 | S-PEEK | 418 | 1.32 | 3.1 | 165 | 54 | 16 |
Calculated from titration (NaCl method).
Calculated from dry membrane weight and dimensions.
Proton density (NH = density/EW×1000).