Table 3.
Comparison of different silicone rubber pre-clean-up methods regarding solvent and time
| Clean-up method | According to reference | Total solvent (mL) | Time (h) | Swelling (%) | Release of oligomers (%) |
|---|---|---|---|---|---|
| Soxhlet extraction ethylacetate | Smedes and Booij (2012) | 400 | 100 | 92 | 2.5 |
| Extraction ethylacetate | Shahpoury and Hageman (2013) | 400 | 48 | 76 | 2.4 |
| Extraction n-hexane/acetone (3:1) | Schäfer et al.(2010) | 800 | 96 | 124 | 2.5 |
| ASE n-hexane/acetone (1:1) | This study | 169 | 1.2 | 42 | 2.2 |
Results of experimental approach using different clean-up methods in regard to swelling and the associated silicone oligomer release in %