Chemical compositions of various TFC membranes.
| Membrane | C (%) | N (%) | O (%) | S (%) | Cl (%) | C/O | C/N |
|---|---|---|---|---|---|---|---|
| M0 | 63.84 | 17.07 | 18.26 | 0.81 | 0.02 | 3.50 | 3.74 |
| M1 | 64.09 | 15.77 | 18.17 | 1.96 | 0.01 | 3.53 | 4.06 |
| M2 | 65.05 | 14.85 | 17.98 | 2.11 | 0.01 | 3.62 | 4.38 |
| M3 | 66.60 | 13.22 | 17.80 | 2.36 | 0.02 | 3.74 | 5.03 |
| M4 | 63.49 | 15.77 | 18.23 | 2.50 | 0.01 | 3.48 | 4.03 |
| Mb | 61.01 | 18.78 | 18.43 | 1.78 | 0 | 3.31 | 3.25 |