B. Werthmann et al., QUANTITATIVE-ANALYSIS OF ANTIOXIDANTS IN ELASTOMERS BY SFE (SUPERCRITICAL-FLUID EXTRACTION), Kautschuk und Gummi, Kunststoffe, 51(2), 1998, pp. 118-121
The total amount of solvent extracts by SFE was determined in 7 vulcan
ized rubbers with different polarity. For comparison the rubber materi
als were extracted in accordance with DIN ISO 1407 (conventional metho
d). The extracts were specially prepared and then the amount of antiox
idants was analyzed offline by HPLC (High Performance Liquid Chromatog
raphy) under defined conditions. The results of SFE and conventional s
olvent extraction (Soxhlet extraction) are comparable, but the SFE off
ers more advantages.