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Contact angles of water and swelling degrees of the dense PPO and PPO/GO membranes.
| Membrane | Contact Angle of Water, ° | Swelling Degree, % | |
|---|---|---|---|
| Water | Ethylene Glycol | ||
| PPO | 89 ± 2 | 1.4 | 3.4 |
| PPO/GO (0.1%) | 89 ± 2 | 1.8 | 3.5 |
| PPO/GO (0.3%) | 87 ± 2 | 2.7 | 3.5 |
| PPO/GO (0.5%) | 86 ± 2 | 3.5 | 4.4 |
| PPO/GO (0.7%) | 85 ± 2 | 6.4 | 7.1 |
| PPO/GO (0.9%) | 83 ± 2 | 6.6 | 7.7 |
