Research Article
Characterization of Functionalized Polyurethane Foam for Lead Ion Removal from Water
Table 1
Foam composition based on various processing variables.
| Variable | Sample | PPG (g) | TDI (g) | BES (g) | DMSO (g) | DBTL (g) | Surfactant (g) | Water (g) | CERT (min) |
| BES/DMSO | A1 | 50 | 18.3 | 0 | 0 | 2 | 0.25 | 6 | 40 | A2 | 3.4 | 7.8 | A3 | 6.7 | 15.7 | A4 | 10.1 | 23.5 |
| PPG/TDI | B5 | 50 | 9.1 | 6.7 | 15.7 | 2 | 0.25 | 6 | 40 | B6 | 18.3 | B7 | 27.4 |
| CERT | C9 | 50 | 18.3 | 6.7 | 15.7 | 2 | 0.25 | 6 | 60 | C8 | 40 | C10 | 90 |
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