Chemie und Prozesstechnik
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- 2019 (1) (entfernen)
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- Nanoparticles with same nominal diameter; surface coating; two-dimensional off-line coupling (1) (entfernen)
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- 6 Materialchemie (1)
- 6.3 Strukturanalytik (1)
The successful off-line coupling of asymmetrical flow field flow fractionation (AF4) and capillary electrophoresis (CE) for Separation of nanoparticles (NPs) with different surface coatings was shown.
Two mixtures of polystyrene nanoparticles (PS-NPs) with comparable core sizes (20 nm and 50 nm) but different coatings (no coating/carboxyl-coated) were studied. Separation in either method resulted in non-baseline resolved or non-separated peaks. In contrast, two-dimensional off-line coupling of AF4 and CE resulted in clearly separated regions in their 2 D plots and can obviouly improve separation resolution.