Table 1.
Plasticizers and sensor membranes properties.
| Plasticizer Name | Abbreviation | Mr g/mol |
Lipophilicity * | Dielectric Constant (ε) ** |
Resistance (MΩ) |
Membrane Visual Appearance |
|---|---|---|---|---|---|---|
| 2-nitrophenyl-octyl-ether | P1 | 251.32 | 5.80 | 21 | 55 | opaque |
| bis(2-ethylhexyl) phthalate | P2 | 390.56 | 7.60 | 5.17 | 57 | milky |
| bis(2-ethylhexyl) sebacate | P3 | 426.67 | 10.08 | 3.89 | 62 | milky |
| 2-nitrophenyl phenyl ether | P4 | 215.20 | 3.39 | 9.8 | 61 | transparent |
| dibutyl phthalate | P5 | 278.34 | 4.79 | 6.43 | 59 | opaque |
| dibutyl sebacate | P6 | 314.46 | 6.30 | 4.6 | 74 | opaque |
* calculated using the ALOGPS 2.1 online program. ** [17].