Table 1.
The HSP values of the solvents and the swelling ratios of the NBR vulcanizates.
| Solvents | δd, MPa1/2 | δp, MPa1/2 | δh, MPa1/2 | q, NBR34 | q, NBR39 | q, NBR44 | |
|---|---|---|---|---|---|---|---|
| Alkanes | Isooctane | 14.10 | 0.00 | 0.00 | 0.03 | 0.01 | 0.01 |
| Heptane | 15.30 | 0.00 | 0.00 | 0.09 | 0.03 | 0.02 | |
| Cyclohexane | 16.80 | 0.00 | 0.20 | 0.16 | 0.05 | 0.02 | |
| Aromatics | Ethylbenzene | 17.80 | 0.60 | 1.40 | 1.81 | 1.24 | 1.03 |
| Toluene | 18.00 | 1.40 | 2.00 | 2.33 | 1.68 | 1.42 | |
| Ethers | Diethyl ether | 14.50 | 2.90 | 4.60 | 0.51 | 0.36 | 0.29 |
| THF | 16.80 | 5.70 | 8.00 | 4.59 | 4.12 | 3.86 | |
| Esters | Butyl acetate | 15.60 | 6.20 | 4.90 | 3.35 | 3.19 | 3.14 |
| Methyl acetate | 15.50 | 7.20 | 7.60 | 2.63 | 2.71 | 2.79 | |
| Ketones | 2-butanone | 16.00 | 9.00 | 5.10 | 4.58 | 4.33 | 4.27 |
| Acetone | 15.50 | 10.40 | 7.00 | 1.94 | 1.41 | 1.17 | |
| Cyclohexanone | 17.80 | 8.40 | 5.10 | 2.19 | 2.01 | 1.95 | |
| Nitriles | Butyronitrile | 15.30 | 12.40 | 5.10 | 2.96 | 2.98 | 3 |
| Benzonitrile | 18.80 | 12.00 | 3.30 | 4.39 | 4.46 | 4.45 | |
| Acetonitrile | 15.30 | 18.00 | 6.10 | 1.07 | 1.4 | 1.68 | |
| Amides | DMF | 17.40 | 13.70 | 11.30 | 3.59 | 3.82 | 4.04 |