
Effect of urea addition on chitosan dissolution with [Emim]Ac-Urea solution system
Keywords: 1HNMR; H-nuclear magnetic resonance; 13CNMR; C-nuclear magnetic resonance; FTIR; Fourier transform infrared spectroscopy; [Emim]Ac; 1-ethyl-â3-âmethylimidazolium acetate; [Amim]Cl; 1-allyl-3-methylimidazolium chloride; [Bmim]Ac; 1-butyl-3-methylimidaz