中国造纸学报2026，Vol.41Issue(1)：18-29,12.DOI:10.11981/j.issn.1000-6842.2026.01.18
干法预处理甘蔗渣纤维素的酯化改性及产物结构性能研究
Study on Esterification Modification of Dry Pretreated Sugarcane Bagasse Cellulose with Structure and Properties of Products
摘要
Abstract
In this study,cellulose acetate(SBC-CA,Pre-SBC1-CA,Pre-SBC2-CA)and cellulose benzoate(SBC-CB,Pre-SBC1-CB,Pre-SBC2-CB)were prepared by acetylation(homogeneous)and benzoylation(heterogeneous)reactions,respectively,with sugarcane bagasse cellulose before and after dry pretreatment at different times as raw material.The samples were characterized to investigate the effects of dry pretreatment on esterification activity of sugarcane bagasse cellulose,with their structure and properties.The results showed that dry pretreat-ment effectively improved the esterification activity of sugarcane bagasse cellulose,and was conducive to the preparation of cellulose acetate and cellulose benzoate with favorable crystalline structure,hydrophobic properties,and thermal stability.Compared with SBC-CA and SBC-CB without dry pretreatment,Pre-SBC2-CA and Pre-SBC2-CB with dry pretreatment for 3 h exhibited the highest esterification efficien-cy with substitution degrees of 2.82 and 0.76,increased by 20.5％and 46.2％,while yields rose by 1.2 and 1.3 times,the crystallinity in-dex increased by 1.26 and 1.09 times,the water contact angle increased by 74.1％and 20.5％,respectively.Theremore,the temperatures corresponding to the maximum degradation rate of Pre-SBC2-CA and Pre-SBC2-CB reached 380 and 369℃,with both the initial and com-plete decomposition temperature increasing simultaneously.关键词
干法预处理/甘蔗渣纤维素/酯化/结构表征/热稳定性Key words
dry pretreatment/sugarcane bagasse cellulose/esterification/structural characterization/thermal stability分类
轻工纺织引用本文复制引用
刘晓霞,张健,付雨璐,李芗怡,张华,韦小燕,林日辉,姚先超..干法预处理甘蔗渣纤维素的酯化改性及产物结构性能研究[J].中国造纸学报,2026,41(1):18-29,12.基金项目
国家自然科学基金(21766004) （21766004）
广西自然科学基金(2019GXNSFAA185008) （2019GXNSFAA185008）
广西民族大学引进人才科研启动项目(2024KJQD06) （2024KJQD06）
广西高校中青年教师科研基础能力提升项目(2023KY0175) （2023KY0175）
广西民族大学研究生教育创新计划(gxun-chxs2024108). （gxun-chxs2024108）
