
Investigation of lignin obtained by processing of Betula pendula with ionic liquids
Keywords: پارس سگ; Ionic liquids; Lignin; Birch; Bark; GPC; 1-butyl-3-methylimidazolium chloride; 1-butyl-3-methylimidazolium acetate; 1-ethyl-3-methylimidazolium mesylate; 1-ethyl-3-methylimidazolium tosylate;