罗布麻秆中纤维素提取及其气凝胶的制备印染（2024No.3）罗布麻秆中纤维素提取及其气凝胶的制备周亲雄1，陈英1，2，3，刘瑞1，欧阳宇航1æèççöø÷÷1.新疆大学纺织与服装学院，新疆乌鲁木齐830017；2.东华大学化学与化工学院，上海201620；3.新疆智能与绿色纺织重点实验室，新疆乌鲁木齐830017摘要：为实现罗布麻秆的高附加值利用，以罗布麻秆为原料，选用硝酸/乙醇法提取纤维素，通过单因素试验和正交试验优化的提取工艺为：温度85℃、时间1.5h和固液比1∶25，提取的纤维素纯度可达98.61%。采用TEMPO氧化与超声处理相结合，制备纳米纤维素；再以其为骨架，加入聚乙烯醇和钠基蒙脱土制备纤维素复合气凝胶（NMPC）。结果表明：与纤维素气凝胶（PC）相比，NMPC对亚甲基蓝（MB）的吸附量最高达265.84mg/g。当应变为60%时，NMPC的应力是PC的2倍。钠基蒙脱土的加入改善了气凝胶的结构，不仅提高了气凝胶的吸附性能，还提升了其压缩力学性能。关键词：罗布麻秆；硝酸/乙醇法；纤维素提取；纤维素气凝胶中图分类号：TS199文献标志码：BDOI：10.3969/j.yinran.202403008CelluloseextractionfromapocynumvenetumstalkanditspreparationofaerogelZHOUQinxiong1,CHENYing1,2,3,LIURui1,OUYANGYuhang1æèççççöø÷÷÷÷1.CollegeofTextilesandClothing,XinjiangUniversity,Urumqi830017,China;2.CollegeofChemistryandChemicalEngineering,DonghuaUniversity,Shanghai201620,China;3.XinjiangKeyLaboratoryofIntelligentandGreenTextile,Urumqi830017,ChinaAbstract:Toachievehighvalue-addedutilizationofapocynumvenetumstalk,celluloseisextractedfromapoc⁃ynumvenetumstalkusingnitricacid/ethanolmethod.Theprocessisoptimizedthroughsinglefactorandor⁃thogonalexperiments,andtheconditionsaredefinesasfollows:temperature85℃,time1.5h,solid-liquidra⁃tio1∶25,thepurityoftheextractedcelluloseis98.61%.Then,thenanocelluloseispreparedbycombiningTEM⁃POoxidationandultrasonictreatment,cellulosecompositeaerogel(NMPC)ispreparedbyaddingpolyvinylalco⁃holandsodiummontmorillonitetonanocelluloseastheskeleton.Theresultsshowthatcomparedwithcellu⁃loseaerogel(PC),theadsorptioncapacityofNMPCforMethyleneBlue(MB)is265.84mg/g,andthestressofNMPCistwicethatofPCwhenthestrainis60%.Theadditionofsodiummontmorillonite...
