Table 1.

Solubility of isolated chitins and chitosan in 4 ionic liquids. Based on data in [91,92].

Polymer	Origin and viscosity	Solubility (w/w%) at 110 °C
		AmiCl	AmiBr	BmiAc	BmiCl
α-Chitin	Crab	n.a.	Soluble, 9.1	n.a	n.a.
α-Chitin	Crab, η 35 cp	Insoluble	n.a.	Soluble, 6	Partly soluble
β-Chitin	Squid pen, η 15 cp	Insoluble	n.a.	Soluble, 7	Partly soluble
β-Chitin	Squid pen, η 278 cp	Insoluble	n.a.	Soluble, 3	Insoluble
Chitosan	Crab, Mv 97 kDa	Soluble, 8	n.a.	Soluble, 12	Soluble, 10

AmiCl is 1-allyl-3-methylimidazolium chloride; BmiCl is 1-butyl-3-methylimidazolium chloride, BmiAc is 1-butyl-3-methylimidazolium acetate, and AmiBr is 1-allyl-3-methylimidazolium bromide. n.a. = not available.