2026/2/26 13:11:20 LIU Wei,LIU Dongye,NING Hengli,ZOU Xuejun,LIU Yanshao,ZHANG Fengshan 8true 2/g to 1.02 kPa·m²/g， an increase of 21.4%； the xylanase treatment could raise the tensile strength index of the slurry from 19.3 N·m/g to 23.8 N·m/g， an increase of 23.3%. Field emission sacanning electron microscopy and transmission electron microscopy analysis indicated that after enzyme pretreatment， more fiber dissociation occurred between the S₁ and S₂ layer of the fiber cell wall during pulping， providing favorable conditions for subsequent pulping dissociation. During fine grinding of fibers， fiber swelling and external micro-fibering were more likely to occur.]]> 2026/2/26 13:11:22 GENG Bo,LIANG Long,SHEN Kuizhong,HAN Shanming,WU Ting,SHAO Xinyi,FANG Guigan 7true Neosinocalamus affinis as the raw material to investigate the effect of pulping conditions on lignin dissolution and fiber morphological evolution. During the process of sulfate pulping， with the increase of alkali dosage， maximum cooking temperature， and time at the maximum temperature as well as sulfidity effect of Neosinocalamus affinis was improved， the remove effect of lignin was enhanced， and the fiber morphology was optimized. Under the condition of alkali dosage of 18% (based on NaOH measurement)， maximum cooking temperature of 160 ℃， time at the maximum temperature of 120 min， and sulfidity of 25%， with the resulting bamboo pulp exhibited a yield of 49.2%，Kappa value of 17.7， fiber length and width of 1.620 mm and 20.60 μm， respectively， with a content of fine fibers of 2.6%， curling index of 5.7%， and the crystallinity index of 66.4%. In addition， the increase in alkali dosage decreased the Kappa value by 1.10/%， the increase in the maximum cooking temperature decreased the Kappa value by 0.35/℃， the increase in the time at the maximum temperature decreased the Kappa value by 0.11/min， and the increase in sulfidity decreased the Kappa value by 0.41/%， the Kappa value was relatively sensitive to the alkali dosage， but relatively insensitive to the time at the maximum temperature. The removal effect of lignin could be enhanced by increasing the alkli dosase and reducing the time at the maximum temperature. Under strengthened cooking condition， the fiber length and width decreased slightly， whereas the fiber curl index increased.]]> 2026/2/26 13:11:23 ZHENG Xiaobin,ZHANG Haoyun,JI Chaoqun,LIN Kairui,YANG Jiawei,HUANG Liulian,LI Jianguo,CHEN Lihui 6true Arundo donax. Firstly, the morphology of the raw materials of Arundo donax and the chemical composition of different parts were analyzed and compared. Secondly, the sulfate cooking process of Arundo donax was optimized through orthogonal experiments. The results showed that the average length of Arundo donax fiber was 1.050 mm, the average width was 23 μm, and the aspect ratio was 45.65. It was a better raw material for papermaking among Gramineous plants. The optimal cooking process conditions for the sulfate method were as follows, the maximum cooking temperature was 155 ℃, the alkali content was 18% (as Na₂O), and the sulfidation degree was 18%. At this time, the yield of fine slurry was 40.91%, the effective alkali content was 10.20 g/L, and the Kappa value was 10.38. The average length of the fibers of Arundo donax pulp was 0.908 mm, the average width was 18.8 μm, and the length-width ratio was 48.30.]]> 2026/2/26 13:11:24 LEI Jingyi,GUAN Xiuqiong,LIU Chun,ZHANG Yongqi,ZHAO Ju 5true 2026/2/26 13:11:25 XU Guangyu,WANG Xin,HUANG Binggui,YAO Shuangquan,QIN Chengrong,LIANG Chen 4true 2026/2/26 13:11:27 LIU Huan,LIU Hongbin,DONG Jixian,QIAO Lijie,LIU Zehua,WANG Shuangfei 3true Neosinocalamus (N.) affinis, this study focused on the research of composite enzyme preparations for enzymatic beating process of N.affinis chemimechanical pulp and chemical pulp, aiming to enhance the beating performance and reduce beating energy consumption. Ultimately, composite enzyme suitable for N.affinis chemimechamical pulp and chemical pulp were developed. The composite enzyme for chemimechanical pulp consisted of 20 U/g xylanase, 35 U/g mannanase, and 10 U/g lytic polysaccharide monooxygenase (LPMO), while that for chemical pulp consisted of 20 U/g xylanase, 20 U/g ferulic acid esterase, and 4 U/g LPMO. After treatment with the composite enzyme, the beating degree of N.affinis chemimechanical pulp and chemical pulp increased by 16.0% and 11.9%, respectively, and the beating energy consumption decreased by 26.1% and 20.6%, respectively. Furthermore, the tensile index and burst index of paper made from N.affinis chemimechanical pulp and chemical pulp were significantly improved, specifically, the tensile index and burst index of chemimechanical pulp paper increased by 20.9% and 13.6%, respectively, while those of chemical pulp paper increased by 5.7% and 1.3%, respectively. It was found that the kink index, water retention value, and fibrillation degree of N.affinis fibers increased after enzyme treatment.]]> 2026/2/26 13:11:28 WANG Jinjin,GUO Feng,BI Yujiao,DENG Zhonghao,LI Qun,LU Fuping,LI Ming 2true 2026/2/26 13:11:29 DUAN Linjuan,WU Hao,LI Zhiqiang,LI Qun,ZHANG Fengshan,ZHU Hongwei,LIU Rongrong 1true