不同生长期绿洲一号和巨菌草制浆性能探讨

Study on Pulping Performance of Arund donax cv. Lvzhou No.1 and Pennisetum Sinese in Different Growth Periods

关键词:  绿洲一号  巨菌草  超声波  制浆性能

Key Words:Arund donax cv. Lvzhou No.1  Pennisetum Sinese  ultrasonic  pulp performance

摘要:采用超声辅助预处理及蒸煮对1年、2年和3年不同生长期的绿洲一号及巨菌草的制浆性能进行了评价。结果表明，在相同制浆工艺条件下（超声波预处理用碱量4%，硫化度2%，超声时间2 h；蒸煮用碱量6%，硫化度0，固液比1∶4，最高温度170℃，保温时间1 h），3年生巨菌草较适合作为制浆原料，其制浆的粗浆得率49.3%，卡伯值14.5，纸浆黏度850.63 mL/g，白度39.3%。超声波预处理液中木素含量4.3 g/L，还原糖含量2.9 g/L，蒸煮黑液中木素含量2.9 g/L，还原糖含量5.7 g/L。抄造纸张抗张指数56.4 N·m/g，撕裂指数20.5 mN·m²/g，耐破指数2.35 kPa·m²/g。

Abstract:The pulping performance of Arund donax cv. Lvzhou No.1 and Pennisetum Sinese in different growth periods of 1， 2， and 3 years by ultrasonic-assisted pretreatment and cooking process were evaluated. The research results showed that under the same pulping conditions （ultrasonic pretreatment with 4% alkali； sulfidity of 2%； ultrasonic time of 2 h； cooking alkali dosage of 6%， sulfidity of 0； solid-liquid ratio of 1∶4； maximum temperature of 170℃， and holding time of 1 h）， the 3-year-old Pennisetum Sinese was more suitable as a pulp raw material， the unscreened pulp yield was 49.3%， Kappa value was 14.5， viscosity was 850.63 mL/g， brightness was 39.3%. The contents of lignin and reducing sugar in ultrasonic pretreatment liquid were 4.3 g/L and 2.9 g/L， and those in cooking black liquid were 2.9 g/L and 5.7 g/L. tensile index of paper was 56.4 N·m/g， and tearing index was 20.5 mN·m²/g， burst index was 2.35 kPa·m²/g.