Effect of Activating Action on the Composition, Structure and Reactivity of Aspen Wood
Effect of different methods of aspen wood activation (grinding in the mills of different design, explosive autohydrolysis, catalytic oxidation with hydrogen peroxide) and combinations of these methods on the structure, chemical composition and reactivity of activated wood was studied. It was established that all the methods used for preliminary mechanical treatment of aspen wood lead to the change of its supramolecular structure, chemical composition and reactivity: the concentration of easily hydrolyzed polysaccharides in activated samples increases, the concentration of hardly hydrolyzed polysaccharides and residual lignin decrease, the rates of acid hydrolysis of polysaccharides into monosaccharides and lignin oxidation by hydrogen peroxide increase.