Combination treatment of kenaf bast fiber for high viscosity pulp

摘要: The viscosity of kenaf bast fiber has been found to be highly sensitive and variable with different pulping methods; therefore, it is important choose proper chemicals conditions for bleaching fiber. From several experiments, a nonconventional method combination ammonium oxalate pretreatment followed by soda at normal pressure then acidic chlorite delignification was developed obtain high-viscosity pulp (162 centipoise). optimum level alkali dosage 15% (on as NaOH). Pulps showed linear relations between xylose or glucose contents, but the gave extremely high viscosity, beyond relations. highest from demonstrated tear index about twofold folding endurance 6.2-fold higher than those Manila hemp comparable tensile burst indexes. could used in production high-quality currency paper longevity special uses.