竹龄对竹材化学成分及制浆造纸性能的影响  

Effects of Bamboo Growth-age on Its Chemical Components and Kraft Pulping Performance

作　　者：朱宗伟 李兵云 李海龙 ZHU Zongwei;LI Bingyun;LI Hailong(School of Light Industry and Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640)

机构地区：[1]华南理工大学轻工科学与工程学院,广东广州510640

出　　处：《中国造纸》2023年第4期8-13,共6页China Pulp & Paper

基　　金：国家科技基础资源调查专项(2019FY100900)。

摘　　要：以3种竹龄竹材为原料,研究了竹龄对竹材化学成分的影响,并进行了竹材硫酸盐法蒸煮和竹浆的筛分、打浆实验,研究了竹龄对竹材制浆及手抄片性能的影响。结果表明,竹材的综纤维素,冷水、热水和1%NaOH抽出物含量随竹龄的增长逐渐减小;苯-醇抽出物含量随竹龄的增长变化不大;Klason木质素、酸溶木质素及总木质素含量随竹龄的增长呈增加趋势。在相同的制浆工艺条件下,黑液中木质素含量随竹龄的增长逐渐增加;竹材细浆得率、竹浆白度、黑液中残碱含量随竹龄的增长逐渐减小;蒸煮粗渣率、竹浆卡伯值随着竹龄的增长逐渐增加。相同打浆度下,1年生和2年生竹材所抄纸张的抗张指数、耐破指数相近,均大于4年生竹材,纸张的撕裂指数和耐折度随竹龄的增长逐渐减小。Using three kinds of growth-ages of Dendrocalamus latiflorus Munro as raw materials,the effect of growth-age on chemical compo‐nents was analysized,and their pulping performances and handsheet properties were evaluated by kraft cooking,sieving,and pulping exper‐iments.The results showed that the holocellulose content,extractives contents(cold water,hot water,and 1%NaOH solution)of bamboo chips gradually decreased with growth-age.The content of benzyl alcohol extractive decreased slightly with growth-age.The contents of Kla‐son lignin,acid soluble lignin,and total lignin increased with growth-age.The lignin concentration in the black liquor gradually increased with growth-age under the same pulping conditions.The screened pulp yield,the pulp brightness,and the content of residual alkali in the black liquor gradually decreased with growth-age.The cooking crude residue rate and the Kappa number of pulp gradually increased with growth-age.Under the same level of beating degree,the tensile index and bursting index of handsheets of 1-year-old and 2-year-old bamboo pulps were similar and greater than those of 4-year-old bamboo pulp.The tear index and folding endurance of paper gradually decreased with growth-age.

关 键 词：竹龄 竹浆 化学成分 硫酸盐制浆 

分 类 号：TS721.2[轻工技术与工程—制浆造纸工程]