Preparation and adsorption behavior of berberine hydrochloride imprinted polymers by using silica gel as sacrificed support material

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• 作者：Hui Li^a ; ^{lihuijsdx@163.com} ; Yuzhuo Li^a ; Zhiping Li^b ; Xiyang Peng^a ; Yanan Li^a ; Gui Li^a ; Xianzhou Tan^a ; Gongxi Chen^a
• 关键词：Molecular imprinted polymer ; Surface imprinting technique ; Berberine hydrochloride ; Silica gel
• 刊名：Applied Surface Science
• 出版年：2012
• 期刊代码：6_01694332
• 类别：ms
• 出版时间：1 March, 2012
• 卷：258
• 期：10
• 页码：4314-4321
• 文件大小：590 K

摘要

Preparation of berberine hydrochloride (B-Cl) imprinted polymers (MIPs) based on surface imprinting technique with silica gel as sacrificial support material was performed successfully by using B-Cl as template, methacrylic acid (MAA) and ethylene glycol dimethacrylate (EGDMA) as functional monomer and cross-linker, respectively. The prepared polymers were characterized by Fourier transmission infrared spectrometry (FTIR) and scanning electron microscopy (SEM). Adsorption behavior of the MIPs for the template and its structural analogues was investigated. Sites distribution on the surface of MIPs was explored by using different isotherm adsorption models and thermodynamic parameters for the adsorption of B-Cl on the MIPs determined. Sample application and reusability for the MIPs was also evaluated. Results indicated the strong adsorption and high selectivity of the MIPs for B-Cl. Saturated adsorption capacity reached 27.2 渭mol g^鈭? and the selectivity coefficient of the MIPs for B-Cl relative to jatrorrhizine hydrochloride (J-Cl) and palmatine palmatus hydrochloride (P-Cl) are 3.70 and 6.03, respectively. In addition, the MIPs were shown with good reusability and selectively retention ability in sample application.