溶胶-凝胶法制备鞣花酸表面分子印迹聚合物

doi:10.13218/j.cnki.csdc.2018.12.004

日用化学工业 ›› 2018, Vol. 48 ›› Issue (12): 684-690.doi: 10.13218/j.cnki.csdc.2018.12.004

溶胶-凝胶法制备鞣花酸表面分子印迹聚合物

郅轲轲^1,2, 徐鲁^1,2, 张亚刚^1,2,3, 王璐璐^1,2, 艾克热木·牙生¹, 张乐涛¹

1.中国科学院新疆理化技术研究所,新疆乌鲁木齐 830011;
2.中国科学院大学,北京 100049;
3.新疆工程学院化学与环境工程系,新疆乌鲁木齐 830023

收稿日期:2018-05-01 出版日期:2018-12-22 发布日期:2019-03-18
通讯作者: 张亚刚,研究员,博士,电话：18129307169,E-mail：ygzhang@ms.xjb.ac.cn。
作者简介:郅轲轲(1991-),女,河南周口人,博士研究生,电话：13095186962,E-mail：zhikeke@ms.xjb.ac.cn。
基金资助:
国家自然科学基金资助项目(21472235,21464015); 中组部千人计划-新疆项目资助(Y32H291501); 新疆天山英才工程(2018)资助项目; 中国科学院科技服务网络计划STS项目资助(2017)

Preparation of molecularly imprinted polymers via sol-gel surface imprinting for selectiveadsorption of ellagic acid

ZHI Ke-ke^1,2, XU Lu^1,2, ZHANG Ya-gang^1,2,3, WANG Lu-lu^1,2, YASIN Akram¹, ZHANG Le-tao¹

1.Xinjiang Technical Institute of Physics and Chemistry,The Chinese Academy of Sciences,Urumqi,Xinjiang 830011,China;
2.University of Chinese Academy of Sciences,Beijing 100049,China;
3.Department of Chemical & Environmental Engineering,Xinjiang Institute of Engineering,Urumqi,Xinjiang 830023,China;

Received:2018-05-01 Online:2018-12-22 Published:2019-03-18

摘要/Abstract

摘要： 采用溶胶-凝胶方法和表面分子印迹技术,以二氧化硅为载体,鞣花酸为模板分子,3-氨丙基三乙氧基硅烷为功能单体,四乙氧基硅烷为交联剂,在室温下合成鞣花酸分子印迹聚合物(MIPs)。通过扫描电镜表征了MIP的表面形貌。通过静态吸附实验评价了MIP对鞣花酸的吸附行为。结果显示,MIP对鞣花酸可在40 min内达到吸附平衡,印迹因子为2.68,饱和吸附容量可达70 mg/g;与非印迹聚合物相比,MIP对鞣花酸具有高选择性和特异识别性。对吸附数据进行非线性拟合结果显示,MIP对鞣花酸的吸附动力学较好地符合准二级动力学模型,MIP对鞣花酸的吸附等温线较好地符合Langmuir等温方程。另外,该材料在经过5次循环利用之后,对鞣花酸的吸附容量仍能保持在90%以上,表现了较好的重复利用性能。所合成的MIP能够作为一种良好的选择性吸附鞣花酸的功能材料,有望应用于复杂基质中鞣花酸的分离和纯化。

关键词: 鞣花酸, 表面分子印迹聚合物, 溶胶-凝胶法, 硅胶载体, 选择性吸附, 化妆品

Abstract: Molecularly imprinted polymers (MIPs) was prepared at room temperature using silica gel as the supporter,ellagic acid as the template molecule,3-aminopropyltriethoxysilane (APTES) as the functional monomer,and tetraethoxysilicane (TEOS) as the cross-linker.The surface morphology of MIP was characterized by SEM.The adsorption of ellagic acid onto MIP was evaluated by static adsorption experiment.The results indicate that the adsorption of ellagic acid on MIP can reach equilibrium within 40 min;the imprinting factor is 2.68;the saturated adsorption capacity is as high as 70 mg/g.In contrast to non-imprinted polymer (NIP),the MIP exhibits high selectivity and specific recognition towards ellagic acid.The results of nonlinear regression of adsorption data show that the adsorption kinetics and adsorption isotherms data of MIP fit well with pseudo-second-order kinetic model and Langmuir isotherm model,respectively.Furthermore,the adsorption capacity of MIP maintains above 90% after five regeneration cycles,indicative of excellent reusability.The prepared MIP can be severed as an excellent functional material for selective adsorption of ellagic acid,which has application potential for the separation and purification of ellagic acid in complex matrix.

Key words: ellagic acid, surface molecularly imprinted polymer, sol-gel method, silica gel supporter, selective adsorption, cosmetics

中图分类号:

TQ658

郅轲轲, 徐鲁, 张亚刚, 王璐璐, 艾克热木·牙生, 张乐涛. 溶胶-凝胶法制备鞣花酸表面分子印迹聚合物[J]. 日用化学工业, 2018, 48(12): 684-690.

ZHI Ke-ke, XU Lu, ZHANG Ya-gang, WANG Lu-lu, YASIN Akram, ZHANG Le-tao. Preparation of molecularly imprinted polymers via sol-gel surface imprinting for selectiveadsorption of ellagic acid[J]. China Surfactant Detergent & Cosmetics, 2018, 48(12): 684-690.

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溶胶-凝胶法制备鞣花酸表面分子印迹聚合物

Preparation of molecularly imprinted polymers via sol-gel surface imprinting for selectiveadsorption of ellagic acid

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