| Abbreviations | Definition |
| 1 H NMR | Proton nuclear magnetic resonance |
| 2-MeTHF | 2-methyl tetrahydrofuran |
| Al | Aluminium |
| ASHS | Amine-free CO2-switchable hydrophilicity solvent |
| BHET | Bis(2-hydroxyethyl) terephthalate |
| C12-TEA | Lauric acid-triethanolamine |
| CPME | Cyclopentyl methyl ether |
| DEG | Diethylene glycol |
| DES | Deep eutectic solvent |
| DET | Diethyl terephthalate |
| DMCHA | N,N-dimethylcyclohexylamine |
| DMF | Dimethyl formamide |
| DMSO | Dimethyl sulfoxide |
| DSC | Differential scanning calorimetry |
| EG | Ethylene glycol |
| EVA | Ethylene-vinyl acetate |
| EVOH | Ethylene vinyl alcohol copolymer |
| FTIR | Fourier transform infrared spectroscopy |
| GVL | γ-Valerolactone |
| HCl | Hydrochloric acid |
| HDPE | High-density polyethylene |
| LDPE | Low-density polyethylene |
| NaOH | Sodium hydroxide |
| PA | Polyamide |
| PE | Polyethylene |
| PET | Polyethylene terephthalate |
| PETG | Polyethylene terephthalate glycol |
| PO | Polyolefin |
| PP | Polypropylene |
| PS | Polystyrene |
| PU | Polyurethane |
| PVC | Polyvinyl chloride |
| SB-PU | Solvent-based polyurethane |
| SF-PU | Solvent-free polyurethane |
| SDP | Selective dissolution–precipitation |
| SHS | Switchable hydrophilicity solvent |
| STRAP | Solvent-targeted recovery and precipitation |
| TGA | Thermogravimetric analysis |
| THF | Tetrahydrofuran |
| TPA | Terephthalic acid |
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