0）-oxygen and hydrogen peroxide enhanced alkali extraction （Eop）-second stage chlorine bleaching （D₁）”. The treatment conditions of each section were optimized （O bleaching stage： sodium hydroxide dosage of 2.0%， oxygen pressure of 0.5 MPa， reaction time of 60 min， reaction temperature of 95 ℃； D₀ bleaching stage： chlorine dioxide dosage of 3.5%， reaction time of 80 min， reaction temperature of 70 ℃， the initial pH value of 4.0； Eop bleaching stage： hydrogen peroxide dosage of 1.4%， oxygen pressure of 0.2 MPa， reaction time of 90 min， reaction temperature of 90 ℃， initial pH value of 11.5； D₁ bleaching stage： chlorine dioxide dosage of 1.5%， the reaction time of 150 min， the reaction temperature of 70 ℃， the initial pH value of 4.0）， and the final prepared bamboo pulp whiteness reached 82.7%， with viscosity of 440 mL/g， ash content of 0.24%， α-cellulose content of 90.92%.]]> 2024/7/22 18:25:42 NIU Shengyue,LUO Xiyao,LIN Kairui,YANG Jiawei,GAO Yafeng,HU Huichao,LI Jianguo,CHEN Lihui 6true 3/g，29.1 μm， and of 774 mm/s， respectively. And the stiffness of the bamboo pulp paper showed a dedining trend with the increase of bamboo age was a declining trend， the stiffness of the bamboo pulp paper of 6 months reached 289 mN， which was about twice as much as that of 36-month bamboo pulp paper. The filtration performance quality factor of bamboo pulp paper showed an increasing trend with the increase of bamboo age， and the quality factor of bamboo pulp paper was up to 4.96 at the age of 36 months， which was better than that of the flash drying hardwood pulp paper and similar to that of the flash drying softwood pulp paper.]]> 2024/7/22 18:25:43 LIU Liang,LIU Mengru,ZENG Jingshan,GAO Qichao,LI Hailong 5true dendrocalamus gracilis， dendrocalamus macrophylla， dendrocalamus minor， and indosasa angustata， respectively. The micro structure， fiber morphology， chemical composition， pulp， and paper properties of these bamboo species were evaluated to assess their potential application as filter materials. The results showed that four bamboo species had an average fiber length exceeding 2 mm. The content of holocellulose， lignin， and ash were 65%~73%， 18%~26%， and 1%~3%， respectively. The yield of fine pulp obtained through sulfite cooking was 30%~41%. Compared with commercial softwood kraft pulp filter materials， bamboo pulp filter materials exhibited higher bulk and stiffness. Based on evaluations of paper bulk， pore size， air permeability， filtration efficiency， filtration resistance， and quality factors， the filter performance of indosasa angustata was found to be favorable， with a quality factor of 5.66， surpassing the commercial softwood kraft pulp sample.]]> 2024/7/22 18:25:43 ZHANG Yan,ZENG Jingshan,HU Zihao,LI Hailong 4true Bambusa changningensis Yi et B.X.Li. The results of the single factor experiment revealed that the Kappa value of the DDS pulp was significantly affected by alkali dosage， sulphidity， maximum cooking temperature， and holding time. Through response surface experiments， the alkali dosage， sulphidity and holding time were further optimized， and the nonlinear regression equation was obtained. The obtained equation demonstrated a good fit according to analysis of variance and significance test. The optimum conditions for the DDS simulation cooking were determined as follows： alkali charge of 23.0% （in terms of NaOH）， sulphidity of 18% （in terms of Na₂S）， liquid ratio of 1∶4.5， maximum cooking temperature of 160 ℃， holding time of 70 min， and alkali dosage mass ratio of 20∶20∶60 （IC∶MC∶FC）. Under these cooking conditions， the yield of fine pulp was 49.0% and the Kappa value of the bamboo pulp could be reduced to 16.2.]]> 2024/7/22 18:25:46 PANG Chunxia,ZHAO Ju,JIANG Feng,XIAO Qicong,ZHAO Mingyao,ZHANG Shengquan,LIU Ximo,ZHAO Xingtao,LI Wenjun,YANG Ling 3true 0 stage， ClO₂ dosage， bleaching temperature， and bleaching time on bleaching yield and pulp whiteness， and optimized the D₀ stage process using orthogonal method. The results showed that under a liquid ratio of 1∶3（g∶mL）， the optimal cooking conditions for distillers’ grains were as follows： alkali dosage of 20%， sulfidity of 20%， and maximum cooking temperature of 150 ℃， the pulp yield of 25.1%， potassium permanganate value of 19.8， and whiteness of 19.2%. The optimal process conditions for the D₀ED₁ three-stage bleaching were as follows： for D₀ stage， pH value before bleaching of 2.01， ClO₂ dosage of 4%， bleaching temperature of 60 ℃， and bleaching time of 30 min， for stage E， alkali dosage of 2%， bleaching temperature of 70 ℃， and bleaching time of 60 min， for stage D₁， ClO₂ dosage of 1.5%， bleaching temperature of 70 ℃， and bleaching time of 120 min， the pulp brightness and potassium permanganate value was 57.2% and 1.9， respectively.]]> 2024/7/22 18:25:47 GAO Hongxia,TANG Ronghua,CAI Zhenyu,YUAN Defeng,YANG Tao 2true 2O₂ bleaching process parameters， and blending conditions on the properties of tobacco stem pulp fibers and paper. Under the conditions of hydrothermal pretreatment at 80 ℃ for 90 min and bleaching with H₂O₂ dogage of 3% for 60 min， tobacco stem pulp fibers with a length of 0.395 mm， width of 32.3 μm， twist angle of 98°， and curl index of 15.3% were obtained. With the mass prepared tobacco stem fibers blended with hardwood pulp in a mass ratio of tobacoo stem pulp and bleached sulfate hardwood pulp was 3∶7， paper with a bulk thickness of 1.68 cm³/g， a brightness of 62.1%， opacity of 94.6%， tear index of 5.92 mN·m²/g， and tensile index of 33.8 N·m/g was produced.]]> 2024/7/22 18:25:49 PAN Pengyu,SHI Jianzai,LI Anqi,CHEN Xin,YANG Weikai,ZHANG Jingnan,CHEN Lihui,LI Jianguo,ZHANG Guoqiang 1true