| 摘要: |
| 为有效分离天然活性黄酮物质山奈酚，制备山奈酚分子印迹聚合物微球，以山奈酚为模板分子，4-乙烯基吡啶为功能单体，乙二醇二甲基丙烯酸酯为交联剂，乙腈为溶剂，采用扫描电镜、傅里叶红外光谱和热重分析进行表征，对其进行吸附性能测定。得到了最优的聚合反应条件是：反应温度60 ℃，功能单体与溶剂的体积比为1：20，模板分子和功能单体的摩尔比为1：8。合成的聚合物微球颗粒均匀，耐热性能好，对山奈酚具有良好的吸附能力，实际最大饱和吸附量是1.053 mg/g。Scatchard分析表明聚合物对山奈酚存在特异性吸附性能。 |
| 关键词: 山奈酚 4-乙烯基吡啶 分子印记聚合物 微球 吸附性能 |
| DOI：10.11841/j.issn.1007-4333.2014.01.21 |
| 投稿时间：2013-05-15 |
| 基金项目:国家自然科学基金资助项目（31070490）；国家林业局948项目（2009-4-62） |
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| Synthesis and evaluation of a molecularly imprinted polymer microsphere for kaempferol |
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CHEN Hong-yan1, SONG Ke-ke1, YUN Yan-bin2, HU Wei-wu3
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| (1.College of Science, Beijing Forestry University, Beijing 100083, China;2.College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China;3.The Jounral Center, China University of Geosciences(Beijing), Beijing 100083, China) |
| Abstract: |
| In order to effectively separate the active natural flavonoids kaempferol (KAE),a molecularly imprinted polymer (MIP) microsphere was prepared in acetonitrile using KAE,4-vinyl pyridine (4-VP) and ethylene glycol dimethacrylate (EDMA) as the template,functional monomer and cross-linker respectively.Afterwards,the synthesized MIP was analyzed by SEM,FTIR and TG.The parameters studied for kaempferol include adsorption kinetics and adsorption isotherm.The optimum synthesis conditions of the MIP microsphere were as follows:synthesis temperature was at 60 ℃,the ratio of functional monomer to solvent was 1：20,and the ratio of template to functional monomer was 1：8.The experimental results showed that the MIP exhibited a favorable affinity for kaempferol,and the saturated capacity could reach to 1.053 mg/g.The Scatchard analysis revealed that the specific adsorption of kaempferols existed in MIP. |
| Key words: kaempferol 4-vinyl pyridine molecular imprinting polymer microsphere adsorption properties |
