摘要
常规工艺条件无法制备高白度化学热磨机械浆(CTMP)是制约竹类原料在高附加值纸产品领域广泛应用的主要原因之一。本研究以慈竹机械浆(TMP)为研究对象,通过强化预处理将纸浆白度由常规工艺的71.6%ISO提高至74.9%ISO。比较两种工艺条件制备的纸浆的紫外-可见光反射光谱和拉曼光谱图谱,发现强化预处理可以大量去除纸浆中的某些苯环侧链不饱和共轭结构,但会增加某些次生发色基团。初步判断慈竹TMP顽固发色基团的结构可能是某些苯环侧链不饱和共轭结构和呋喃类共轭结构。
The applications in high value-added paper products of bamboo is limited for high-brightness bamboo chemical thermomechanical pulp(CTMP)cannot be obtained from conventional process.In this study,the brightness of the Neosinocalamus Affinis TMP was increased from 71.6%ISO(conventional process)to 74.9%ISO by enhancing pretreatment.Comparing the UV-vis reflectance and Raman spectra of the pulps prepared in the abovementioned two process conditions,it was found that a good deal of the unsaturated conjugated structures of the side chain in benzene rings were removed,but certain new sub-chromogenic groups increased because of the enhancing pretreatment.The structure of the stable chromophores of the Neosinocalamus Affinis TMP was tentatively determined to be certain unsaturated conjugated structures of the benzene ring side chain and furan-type conjugated structure.
作者
焦健
朱北平
李刚
田庆文
房桂干
邓拥军
沈葵忠
梁芳敏
JIAO Jian;ZHU Beiping;LI Gang;TIAN Qingwen;FANG Guigan;DENG Yongjun;SHEN Kuizhong;LIANG Fangmin(State Key Laboratory for Biomass Chemical Utilization,Key Laboratory of Forest Chemical Engineering,SFA,Jiangsu Provincial Key Laboratory of Biomass Energy and Material,Institution of Chemical Industry of Forest Products,CAF,Nanjing,Jiangsu Province,210042;Collaborative Innovation Center for High Efficiency Processing and Utilization of Forestry Resources,Nanjing Forestry University,Nanjing,Jiangsu Province,210037;Shandong Huatai Paper Co.,Ltd.,Dongying,Shandong Province,257335)
出处
《中国造纸学报》
CAS
CSCD
北大核心
2022年第1期43-48,共6页
Transactions of China Pulp and Paper
基金
广西清洁化制浆造纸与污染控制重点实验室(广西大学)开放基金项目“木质素炭基复合光催化材料的构筑及其对二氧化氯制浆漂白废水中AOX的降解机制研究”(2021KF13)
泰山产业领军人才工程专项经费(tscy20200213)资助。
关键词
慈竹机械浆
漂白
顽固发色基团
Neosinocalamus Affinis TMP
bleach
stable chromophores
