木质素含量对纤维素纳米纤维热稳定性的影响  

Effect of Lignin Content on the Thermal Stability of Cellulose Nanofiber

作　　者：王绪崇 张胜 袁晓君 陆丽蓉 张日婧 徐子越 孙文 骆莲新[1,2] WANG Xuchong;ZHANG Sheng;YUAN Xiaojun;LU Lirong;ZHANG Rijing;XU Ziyue;SUN Wen;LUO Lianxin(College of Light Industry and Food Engineering,Guangxi University,Nanning,Guangxi Zhuang Autonomous Region,530004;Guangxi Key Lab of Clean Pulp&Papermaking and Pollution Control,Nanning,Guangxi Zhuang Autonomous Region,530004)

机构地区：[1]广西大学轻工与食品工程学院,广西南宁530004 [2]广西清洁制浆造纸与污染控制重点实验室,广西南宁530004

出　　处：《中国造纸》2021年第7期70-77,共8页China Pulp & Paper

基　　金：广西自然科学基金(2018GXNSFAA281336);广西“大学生创新创业训练计划”(201910593200)。

摘　　要：分别采用热水、绿液及漂白预处理以改变蔗渣和云杉纤维素纳米纤维的木质素含量,探究残余木质素含量对纤维素纳米纤维热稳定性能的影响。结果表明,经过热水预处理制备的蔗渣和云杉纤维素纳米纤维的木质素含量分别比经过绿液预处理制备的蔗渣和云杉纤维素纳米纤维高16.1%和8.9%,比经过漂白预处理制备的蔗渣和云杉纤维素纳米纤维的高22.7%和24.3%,半纤维素含量相对较低。经过热水预处理制备的蔗渣和云杉纤维素纳米纤维的热稳定性分别比经过漂白预处理制备的蔗渣和云杉纤维素纳米纤维的热稳定性提高了约4.3%和5.4%。The hot water,green liquor and bleach pretreatment were used to change the lignin content of bagasse and spruce cellulose nanofibers and explore the effect of residue lignin content on the thermal stability of cellulose nanofibers.The results indicated that the lignin content of SCB-HW and SP-HW was 16.1%and 8.9%higher than SCB-GL and SP-GL,22.7%and 24.3%higher than SCB-B and SP-B,while hemicellulose the content was relatively low.The thermal stability of SCB-HW and SP-HW was 4.3%and 5.4%higher than that of SCBB and SP-B,respectively.Conclusively,the different pretreatment changed the lignin and hemicellulose content of cellulose nanofibers and impacted the thermal stability of cellulose nanofibers.

关 键 词：纤维素纳米纤维 预处理 木质素 热稳定性 

分 类 号：TS721[轻工技术与工程—制浆造纸工程]