纤维素科学与技术2025，Vol.33Issue(1)：39-45,7.DOI:10.16561/j.cnki.xws.2025.01.01
基于玉米秸秆的超疏水纳米纤维素气凝胶的制备与油水分离性能研究
Preparation and Oil-water Separation Performance Study of Superhydrophobic Nanocellulose Aerogels Based on Corn Stover
摘要
Abstract
The development of low-cost,green and efficient absorption materials is of great importance in the field of oil-water separation.In this paper,nanocellulose fibers were extracted from agricultural waste corn stover by chemical-mechanical methods.Polyvinyl alcohol(PVA)and polydopamine(PDA)nanoparticles were added to the corn cellulose suspension by the one-pot method,and the suspension was then freeze-dried to prepare nanocellulose aerogels.Finally,the aerogels were super-hydrophobically modified by immersing in an ethanol solution of stearic acid(SA)to obtain superhydrophobic cellulose-nanocellulose aerogels(SA/CC).The water contact angle(WCA)of the SA/CC reached 158.52º±2.73º.In the oil-water separation test,the absorption capacity of the aerogel for various oils ranged from 19.5 to 55.3 g/g,and the decrease of the absorption capacity after 20 repetitions of oil absorption ranged from 4.9%to 14.3%.The oil-water separation efficiencies of various oils and solvents were all greater than 96%.This environmentally friendly aerogel presents great potential for application in oil-water separation.关键词
玉米秸秆/纳米纤维素纤维/气凝胶/超疏水/油水分离Key words
corn stover/cellulose nanofiber/aerogel/super-hydrophobicity/oil-water separation分类
化学工程引用本文复制引用
娄焯垚,涂园园,李娜,孔佳利..基于玉米秸秆的超疏水纳米纤维素气凝胶的制备与油水分离性能研究[J].纤维素科学与技术,2025,33(1):39-45,7.基金项目
清远市市科技计划项目(2022YFJH004). （2022YFJH004）
