均相体系中改性纤维素的制备及其对亚甲基蓝的吸附性能研究  

Preparation of modified cellulose in the homogeneous system and study on its adsorption performance toward methylene blue

作　　者：谭磊 姚睿 郝燕[1,2] 杨卉[1,2] 杨慧敏 马力通[1,2] Tan Lei;Yao Rui;Hao Yan;Yang Hui;Yang Huimin;Ma Litong(School of Chemistry and Chemical Engineering,Inner Mongolia University of Science&Technology,Baotou 014010;Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-coal Chemical Industry,Inner Mongolia University of Science&Technology,Baotou 014010)

机构地区：[1]内蒙古科技大学化学与化工学院,包头014010 [2]内蒙古科技大学生物煤化工综合利用内蒙古自治区工程研究中心,包头014010

出　　处：《化工新型材料》2024年第2期218-222,229,共6页New Chemical Materials

基　　金：国家自然科学基金项目(11965015);内蒙古自治区高等学校青年科技英才支持计划资助(NJYT22072);内蒙古科技大学优秀青年基金项目(2019YQL05);内蒙古科技大学基本科研业务费专项资金;“草原英才”工程专项经费。

摘　　要：为了开发低成本、环境友好的吸附材料用于吸附、分离水中的染料离子,在均相体系中,以纤维素为基材、过硫酸钾为引发剂、甲基丙烯酸缩水甘油酯(GMA)为接枝单体,制备了纤维素接枝共聚物Cell-g-PGMA,并通过FT-IR、XRD和TGA对接枝共聚物进行了表征。系统研究了接枝时间、温度、单体用量和引发剂用量对接枝率的影响。同时在不同吸附时间、温度、吸附剂用量和初始浓度下考察了Cell-g-PGMA对亚甲基蓝(MB)离子的吸附性能。研究表明,该吸附剂对MB表现出优异的吸附性能,理论最大吸附量为271.39mg/g,吸附过程符合准二级动力学模型和Langmuir吸附等温线。To develop the low-cost and environmentally friendly adsorbents for the adsorption and separation of dye ions from wastewater,cellulose graft copolymers(Cell-g-PGMA)were prepared in the homogeneous system using cellulose as the substrate,potassium persulfate as the initiator and glycidyl methacrylate(GMA)as the monomer.The graft copolymers were characterized by FT-IR,XRD and TGA.Meanwhile,the effects of grafting time,temperature,the amount of monomer and initiator on the grafting rate were systematically studied.Moreover,the adsorption performance of Cell-g-PGMA toward methylene blue(MB)was investigated at different adsorption times,temperatures,the adsorbent dosages and initial MB concentrations.The results indicated that as-prepared Cell-g-PGMA exhibited excellent adsorption performance for MB with a theoretical maximum adsorption capacity of 271.39mg/g.The adsorption behavior was well fitted to the pseudo-second-order kinetic model and the Langmuir adsorption model.

关 键 词：微晶纤维素 甲基丙烯酸缩水甘油酯 均相接枝改性 吸附 亚甲基蓝 

分 类 号：O636.11[理学—高分子化学]