Table 3.

Pore sizes generated using various processes for different scaffolds.

Process	Polymer	Pore Size (µm)	References
Conventional gas foaming	PEGDA	100–400	[61,62]
CO2-water emulsion templating	Dextran	6.25–7	[63]
Dense gas CO2 + cross-linker	Elastin	80	[64]
Dense gas CO2 + cross-linker	Gelatin	80–120	[75]
Porogen leaching	PEG/PCL	180–400	[65]
Porogen leaching	PLGA	250–500	[6]
Freeze-drying	Collagen/Chitosan	50	[66]
Freeze-drying	Agarose	71–187	[67]
Freeze-drying	Chitosan, alginate	60–150	[68]
Freeze-drying	Gelatin	40–500	[69]
Freeze-drying	PVA/PCL	30–300	[70]
Freeze-drying	Chitosan/PCL	10–100	[72]
Electrospinning	Gelatin/PCL	20–80	[72,74]