| Abstract:Using single-factor experiment, application of additives in prehydrolysis of bamboo and determination of optimum technological conditions of bamboo dissolving pulp manufacture were studied, the optimum conditions were obtained. For prehydrolysis stage, the additives charge is 0.5% (based on the oven dried bamboo chips), the retention time at maximum temperature is 60 min; prehydrolyzed stock is neutralized before conducting kraft cooking. The kraft cooking optimum conditions: alkali charge 18%（Na2O）, time at maximum temperature 90 min. Under these conditions, the qualities of resultant bamboo dissolving pulp are brightness 37.3%ISO, viscosity 992 mL/g, yield 29.5%, Kappa number 8.0, alkali solubility S18 2.03%, S10 3.38%, S10-S18 1.35%. |
