摘要
本研究以11种桉木和5种相思木为研究对象,使用多种统计学模型拟合分析了16种原料的材性特征(β-β结构单元含量、原浆白度)与其在2种预浸渍溶出物处理工艺(全洗净与全保留)下可漂性的关系。结果表明,所有原料β-β结构单元含量与可漂性呈显著负相关关系,而原浆白度与可漂性呈正相关关系;预浸渍溶出物全洗净工艺的模型拟合效果显著优于全保留工艺,其中桉木在全洗净工艺下的二次变换模型决定系数(R^(2))高达0.90,表明β-β结构单元含量和原浆白度对可漂性的影响显著;全保留工艺的模型拟合效果较差(R^(2)<0.66),表明预浸渍溶出物的保留削弱了材性参数对可漂性的解释能力,其对原料可漂性的影响不容忽视;同时发现,桉木与相思木的材性特征具有协同建模潜力,相思木数据的引入未对模型拟合效果产生显著影响。
This study investigated 11 eucalyptus and 5 acacia wood species,employing multiple statistical models(including multivariate linear regression,exponential models,and quadratic transformation models)to analyze the correlations between material characteristics(β-βstructural unit content,original pulp brightness)and bleachability under two pre-impregnation dissolved substance treatment processes(fullwash and full-retention).The results demonstrated thatβ-βstructural unit content exhibited a significant negative correlation with bleachability,while original pulp brightness showed a positive correlation in all raw materials.The full-wash process achieved superior model fitting performance compared to the full-retention process.Specifically,the quadratic transformation model for eucalyptus under the full-wash process yielded a determination coefficient(R^(2))of 0.90,indicating thatβ-βstructural unit content and original pulp brightness significantly influenced bleachability.In contrast,the full-retention process showed poorer model performance(R^(2)<0.66),suggesting that retained pre-impregnation dissolved substances weakened the explanatory power of material characteristics on bleachability.Additionally,eucalyptus and acacia exhibited synergistic modeling potential,as the inclusion of acacia data did not significantly compromise model accuracy.
作者
焦健
焦婷
房桂干
耿博
邓拥军
沈葵忠
李红斌
姜海鹏
JIAO Jian;JIAO Ting;FANG Guigan;GENG Bo;DENG Yongjun;SHEN Kuizhong;LI Hongbin;JIANG Haipeng(Jiangsu Key Lab of Biomass Energy and Materials,Key Lab of Chemical Engineering of Forest Products,National Engineering Lab for Biomass Chemical Utilization,Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry,Nanjing,Jiangsu Province,210042;Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Nanjing,Jiangsu Province,210037;Shandong Sun Paper Industry Joint Stock Co.,Ltd.,Jining,Shandong Procince,272100)
出处
《中国造纸学报》
北大核心
2025年第4期132-139,共8页
Transactions of China Pulp and Paper
基金
国家自然科学基金面上项目(32271974)。
关键词
化机浆
可漂性
β-β结构
原浆白度
预浸渍溶出物
chemi-mechanical pulp
bleachability
β-βstructural unit
original pulp brightness
pre-impregnation dissolved substance
