第 43 卷第 1 期Vol. 43 No. 1
2013 年 2 月Feb 2013

所属栏目:功能材料

N-甲基乙酰胺基修饰的超高交联吸附树脂的合成与吸附性能
周 平,王小梅*,赵晨曦 (长沙学院 生物工程与环境科学系,湖南 长沙 410003)
摘 要:以大孔交联氯甲基化聚苯乙烯为原料通过Friedel-Crafts反应、甲胺化反应和乙酰化反应,制备了N-甲基乙酰胺基修饰的超高交联型吸附树脂。研究了树脂对水溶液中水杨酸的吸附去除性能。结果表明,所制得的树脂能有效吸附水溶液中的水杨酸,吸附等温线都是I型吸附等温线,Langmuir和Freundlich方程模型都可很好地拟合平衡吸附数据。水杨酸原始浓度在903.6 mg/L、流速在88 mL/h,10 mL湿树脂在60 BV(1BV=10 mL)左右出现穿透,性能优于目前商品化的XAD-4树脂和XAD-7树脂。
关键词:N-甲基乙酰胺;超高交联树脂;吸附;水杨酸
中图分类号:TQ32  文献标识码:A  文章编号:1009-9212(2013)01-0055-04
Synthesis and Adsorption Property of Hypercrosslinked Polymeric Adsorbent Modified with N-Methylacetamide Groups
ZHOU Ping,WANG Xiao-mei*,ZHAO Chen-xi (Department of Bioengineering and Environmental Science,Changsha University,Changsha 410003,China)
Abstract:By Friedel-Crafts reaction,methylamination and acetamidation,a novel N-methylacetamide modified hypercrosslinked polymeric adsorbent was synthesized from macroporous cross-linked chloromethylated polystyrene. The adsorption behavior of salicylic acid on this resin was investigated in aqueous solution. The results indicated that the adsorption isotherms were type I isotherm,the Langmuir and Freundlich models were in accordance with the adsorption equilibrium data. At an initial concentration of 903.6 mg/L and a flow rate of 88 mL/h,60 BV of salicylic acid aqueous solution could be dealt by 10 mL of the title resin before the breakthrough point,which was superior to XAD-4 and XAD-7.
Key words:N-methylacetamide;hypercrosslinked polymeric adsorbent;adsorption;salicylic acid
基金项目:湖南省教育厅研究课题(11C0120)。
作者简介:周 平(1988-),男,湖南岳阳人,研究方向:功能高分子材料。
联 系 人:王小梅(1977-),女,湖南祁东人,研究方向:功能高分子。(E-mail:wxm@ccsu.cn)
收稿日期:2012-12-20