| Composition of the nonionic surfactant (PENONIONIC-1) | IFT, mNm | EE
| ODE | Additional oil yield | ||
| Monoester, % | Diester, % | 1% | 5% | 1h, 80˚C, % | mm | % |
SM-1 | 88.17 | 4.1 | 0.03 | 0.016 | 100 | 25 | 35.94 |
SM-2 | 97.00 | 2.46 | 0.05 | 0.008 | 97.5 | 20 | 23.20 |
SM-3 | 81.85 | 16.9 | 0.029 | 0.015 | 10 | 15 | 12.45 |
SM-4 | 86.00 | 13.37 | 0.023 | 0.025 | 10 | 21 | 19.72 |
SM-5 | 78.93 | 15.12 | 0.039 | 0.028 | 50 | 16 | - |
SM-6 | 86.39 | 12.21 | 0.045 | 0.019 | 12.5 | 19 | - |
SM-7 | 97.00 | 2.46 | 0.051 | 0.035 | 95 | 14 | 23.42 |
SM-8 | 97.00 | 2.46 | 0.036 | 0.045 | 85 | 15 | 24.64 |
SM-9 | 97.00 | 2.46 | 0.023 | 0.019 | 40 | 16 | 26.89 |