Fig. 4. FTIR spectra of bleached cellulosic pulp (Cp), and dialdehyde cellulose samples produced (at 75 °C during 3 h, with a 9.6 NaIO4/cellulosic pulp ratio) from different raw materials: from bleached cellulosic pulp, from Eucalyptus wood chips wastes subjected to mild cooking together with hot water extraction pre-treatment (kappa numbers of 10.2 and 13.9), and cooking without any hot water pre-treatment (kappa numbers of 16.1 and 26.7), i.e., DACp, DACwaqD2, DACwaqD3, DACwD1 and DACwD4, respectively.
