Page 67 - 精细化工2019年第9期
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第 36 卷第 9 期 精 细 化 工 Vol.36, No.9
201 9 年 9 月 FINE CHEMICALS Sept. 2019
功能材料
木犀草素配位印迹聚合物的制备及吸附性能
乐 薇,锁进猛,徐文广,杨 立,龚乃超
(武汉工商学院 环境与生物工程学院,湖北 武汉 430065)
2+
摘要:采用沉淀聚合法,结合 Zn 的配位作用,在水溶液中制备了木犀草素配位印迹聚合物(LUT-CIPs),并
2+
考察了 LUT-CIPs 的吸附性能。结果表明,LUT-CIPs 的最佳制备条件为:n〔模板分子(木犀草素-Zn )〕∶n〔功
能单体(丙烯酰胺)〕∶n〔交联剂(N,N-亚甲基双丙烯酰胺)〕=1∶4∶30。在该条件下聚合物对醇相中的木犀草素
的吸附量达 36.45 mg/g、对芹菜素和芸香叶苷竞争底物的选择性系数分别达到 5.09 和 3.35;木犀草素在 LUT-CIPs
的吸附过程符合 Freundlich 等温吸附模型和准二级动力学方程;吸附液中加入的 14 种金属盐均可提高 LUT-CIPs
的吸附容量,金属离子和酸根离子种类对吸附有影响,其中加入 Pb(Ac) 2 后吸附容量提高最明显,为加入 Zn(Ac) 2
的 2.48 倍、未加金属盐的 5.20 倍。
关键词:木犀草素;分子印迹;配位;吸附性能;功能材料
中图分类号:TQ041.8;R284.2 文献标识码:A 文章编号:1003-5214 (2019) 09-1795-08
Preparation and Adsorption Properties of Luteolin
Complex Imprinted Polymers
YUE Wei, SUO Jin-meng, XU Wen-guang, YANG Li, GONG Nai-chao
(College of Environmental and Biological Engineering, Wuhan Technology and Business University, Wuhan 430065,
Hubei, China)
Abstract: A series of luteolin complex imprinted polymers (LUT-CIPs) were synthesized in aqueous
2+
solution by precipitation polymerization combined with the coordination effect of Zn . Their adsorption
properties were also studied. The results showed that the optimum condition for the preparation of
2+
LUT-CIPs were as follows: n(luteolin-Zn as template molecule)∶n(acrylamide as functional monomer)∶
n(N,N-methylenebisacrylamide as crosslinker)=1∶4∶30. Under this condition, the obtained LUT-CIPs
possessed the highest adsorption properties, and the adsorption capacity for luteolin from ethanol phase
reached 36.45 mg/g, the selectivity coefficient of luteolin for apigenin was 5.09 and for rutin was 3.35. The
adsorption process of luteolin on LUT-CIPs conformed to the Freundlich isothermal adsorption model and
the pseudo-second-order kinetic equation. The adsorption capacity of LUT-CIPs was increased when adding
metal salts into solution, the kinds of metal ion and acid radical influenced the adsorption. After adding
Pb(Ac) 2 into the adsorption solution, the adsorption capacity of LUT-CIPs increased most obviously, which
was 2.48 times as much as adding Zn(Ac) 2 and 5.20 times as much as adding no metal salts.
Key words: luteolin; molecular imprinting; coordination; adsorption properties; functional materials
[1]
木犀草素为一种典型的黄酮类天然化合物 ,存 选择性富集作用的物质以分离天然植物中的木犀草
[4]
在于多种植物中,具有抗肿瘤 [2-3] 、抗菌 、抗氧 素不但有研究意义,还具有经济价值。分子印迹技
[7]
[5]
[6]
化 以及对血脑屏障 、呼吸系统 、神经系统 [8-9] 术是新发展起来的一种模拟抗体-抗原相互作用的
的保护等作用。但从天然植物中分离获得高纯度的 技术,它以某一种特定靶分子为模板,制备出对该
木犀草素仍是一个研究难题。因此,制备一种具有 特定模板分子具有特异性识别作用的印迹聚合物
收稿日期:2018-09-05; 定用日期:2019-03-04; DOI: 10.13550/j.jxhg.20180659
基金项目:湖北省教育厅科学研究计划项目(B2017321);武汉工商学院校学术团队资助项目(SXTD2015003)
作者简介:乐 薇(1979—),女,副教授,E-mail:yuewei11@126.com。