Table 5.
Density of different polymers and various density solutions for MPs separation.
| Polymer | Ref. | Density solution | Ref. | ||
|---|---|---|---|---|---|
| Type | Density (g/cm3) | Type | Density (g/cm3) | ||
| Polypropylene (PP) | 0.83–0.85 | (Andrady, 2015) | Water | 1.00 | (Dikareva and Simon, 2019) |
| Polyethylene (PE) | 0.91–0.94 | (Andrady, 2015) | NaCl | 1.20 | (Wang et al., 2017) |
| Polystyrene (PS) | 1.05 | (Andrady, 2015) | CaCl2 | 1.40 | (Grause et al., 2022) |
| Polyamide or nylon (PA) | 1.13–1.15 | (Sundt et al., 2014) | K2CO3 | 1.54 | (Gohla et al., 2021; Prepilková et al., 2022) |
| Polyurethane (PUR) | 1.20 | (Sundt et al., 2014) | NaBr | 1.55 | (Liu et al., 2019b) |
| Polyethylene terephthalate (PET) | 1.37 | (Andrady, 2015) | ZnBr2 | 1.71 | (Quinn et al., 2017) |
| Polyvinyl chloride (PVC) | 1.38 | (Andrady, 2015) | ZnCl2 | 1.60–1.80 | (Scherer et al., 2020) |
| Polytetrafluorethylene (PTFE) | 2.20 | (Sundt et al., 2014) | NaI | 1.60–1.80 | (Dikareva and Simon, 2019; Zhang and Liu, 2018) |