Table 1.
Formulations, element concentrations and binding energies of N1s, S2p, and Si2P of PPTA and PPTA-AM samples.
| Samples | APTES (mol)/ MPTES (mol) (Molar ratio) |
Element concentrations Atomic % |
Functional groups content (mmol g−1) | |||||
|---|---|---|---|---|---|---|---|---|
| C1S | N1S | O1S | Si2P | S2P | NH2 | SH | ||
| PPTA | 0/0 | 73.68 | 7.85 | 19.47 | ||||
| PPTA-AM-90 | 136.17/15.13 (9/1) | 67.14 | 6.07 | 16.37 | 8.63 | 1.79 | 1.25 | 0.55 |
| PPTA-AM-70 | 105.91/45.39 (7/3) | 58.26 | 5.94 | 19.52 | 11.91 | 4.37 | 0.95 | 0.97 |
| PPTA-AM-50 | 75.65/75.65 (1/1) | 53.35 | 5.61 | 23.74 | 11.97 | 5.33 | 0.73 | 1.27 |
| PPTA-AM-30 | 45.39/105.91 (3/7) | 52.04 | 5.26 | 22.49 | 13.30 | 6.91 | 0.42 | 1.58 |
| PPTA-AM-10 | 15.13/136.17 (1/9) | 51.75 | 5.06 | 22.16 | 13.19 | 7.84 | 0.13 | 1.75 |