Ionic Liquid-assisted Synthesis of Nanocellulose Adsorbent and Its Adsorption Properties

被引：0
|
作者：
Huang J. [1 ]
Lin C. [1 ]
Chen R. [2 ]
Xiong W. [1 ]
Wen X. [1 ]
Luo X. [1 ]
机构：
[1] College of Environment and Resources, Fuzhou University, Fuzhou
[2] College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou
来源：
Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2020年 / 34卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Adsorbent; Graft copolymerization; Ionic liquid; Methylene blue; Nanocellulose; Organic polymer materials;
D O I：
10.11901/1005.3093.2020.017
中图分类号：
学科分类号：
摘要：
Nanocellulose adsorbent (AA/AM-g-NC) from cotton linter was successfully prepared by high pressure homogenization with the assistance of an ionic liquid. The cotton linter was first swelled, hydrolyzed and grafted with acrylic acid and acrylamide in an ionic liquid (1-butyl-3-methylimidazolium hydrogen sulfate ([Bmim]HSO4)), and then further treated by high pressure homogenization and finally AA/AM-g-NC was obtained. The AA/AM-g-NC adsorbent was characterized and used as adsorbent to adsorb methylene blue. The results show that after the treatment of high pressure homogenization assisted with hydrolysis and graft in ionic liquid AA/AM-g-NC illustrated as crosslinked net with fibril. The crystalline of AA/AM-g-NC remained as cellulose Ⅰ type, with a little increase in the crystallinity. The appearance of functional group from acrylic acid and acrylamide on the AA/AM-g-NC surface was proved. The sorption process towards methylene blue was pH value dependent, spontaneous, exothermic and followed the Langmuir adsorption isotherm. And the adsorption kinetic is closer to the quasi-second order kinetic equation and controlled by both intraparticle diffusion and surface diffusion.
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页码：674 / 682
页数：8
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