Table 2.
Con A binding capacities of hydroxylated nylon membranes modified by different polyelectrolyte films.a
| Polyelectrolyte films | pH of PAH and/or PAA deposition solution | Con A binding from breakthrough curve (mg/cm3) | Con A binding from elution (mg/cm3) |
|---|---|---|---|
| PSS/PAH/PAA-NTA-Cu2+ | 2 | 65±1 | 69±2 |
| 3 | 53±1 | 52±2 | |
| 4 | 36±4 | 33±2 | |
| 5 | 19±4 | 21±4 | |
| PAA-NTA-Cu2+ | 2 | 60±1 | 59±2 |
| 3 | 52±2 | 52±6 | |
| 4 | 37±4 | 37±5 | |
| 5 | 12±2 | 11±3 | |
| PAA/PAH/PAA-NTA-Cu2+ | 3 | 69±1 | 71±2 |
| PAA/PEI/PAA-NTA-Cu2+ | 3 | 73±4 | 71±7 |
a
Each experiment was repeated with two different membranes, and the ± values represent the difference between the average and the data points.