Comparison of cationic demand between olive wood organosolv pulp and eucaliptus kraft pulp (original) (raw)

The present work has evaluated the variation of cationic demand in function of refining degree for two unbleached cellulosic pulps: a eucalyptus pulp proceeding from a kraft process and an olive wood pulp proceeding from an organosolv process. In the organosolv process, a mixture of ethanolamine, sodium hydroxide and water has been used. For each kind of pulp, fines percentage, weighted medium length of fines, specific surface, carboxyl group's content, water retention value and cationic demand in function of refining degree have been obtained. Cationic demand has been evaluated by means of colloidal titration.