Table 4.

Summary of solvents used in selective dissolution–precipitation processes.

Classification	Target Polymer	Dissolution (Solvent)	Precipitation (Antisolvent or Operation)	References
Physical dissolution–selective dissolution–precipitation	LDPE	Xylene	Isopropanol	[35,36]
		biodiesel	ethanol	[37]
		2-MeTHF	Distilling the solvent	[37]
		cyclopentyl methyl ether	Distilling the solvent	[37]
		* xylene	n-hexane	[38]
	PE	toluene	acetone	[39,40]
	HDPE	Xylene	isopropanol	[35]
		* xylene	n-hexane	[38]
	PP	Xylene	isopropanol	[35]
		* xylene	n-hexane	[38]
	PS	* D-limonene	Distilling the solvent	[38]
	PET	* benzyl alcohol	methanol	[38]
		GVL (remove PU ink)	-	[41]
	PVC	* dichloromethane	methanol	[38]
	EVOH	DMSO	Water	[39,40]
		DMSO (60%)–water (40%)	Cooling from 95 to 35 °C	[40]
	PETG	DMF (60%)–THF (40%)	n-propanol	[40]

* dissolution of commercial waste packaging materials, may not be multilayer structures.