表面接枝法制备磁性邻苯二甲酸二丁酯印迹聚合物及其识别性能研究

发布时间：2018-06-11 15:40

本文选题：邻苯二甲酸二丁酯 + 分子印迹聚合物　；参考：《分析化学》2017年04期

【摘要】：采用表面接枝法对四氧化三铁纳米粒子表面进行功能化修饰,以二甲基丙烯酸乙二醇酯(EGDMA)为交联剂,偶氮二异丁腈(AIBN)为引发剂,成功制备了对邻苯二甲酸二丁酯(DBP)具有特异识别性能的磁性表面印迹聚合物(MMIPs)。利用扫描电镜、透射电镜、振动样品磁强计、元素分析、红外光谱等对其进行表征。BET测试结果表明,MMIPs的比表面积(380 m~2/g)大于MNIPs(324 m~2/g)。吸附动力学、等温线模型分析显示,MMIPs对DBP的Sips等温线模型相关系数R~2=0.999,动力学Pseudo-second-order模型相关系数(R~2)为0.9797。对邻苯二甲酸二烯丙酯(DAP)、DBP和邻苯二甲酸二(2-乙基己基)酯(DEHP)的印迹因子分别为1.53、2.21和1.39,对DBP具有较高的印迹因子和较好的识别性能。磁性分子印迹聚合物经5次再生后,对DBP的吸附能力仅下降了12.3%,表明再生循环效果较好。
[Abstract]:The surface of Fe _ 2O _ 4 nanoparticles was functionalized by surface grafting method, using ethylene glycol dimethacrylate (EGDMA) as crosslinking agent and azodiisobutyronitrile (AIBN) as initiator. A magnetic surface imprinted polymer (MMIPsN) with special recognition property was successfully prepared. Scanning electron microscope, transmission electron microscope, vibratory sample magnetometer, elemental analysis and infrared spectroscopy were used to characterize the MMIPs. The results of BET showed that the specific surface area of MMIPs was 380mN / 2 / g) larger than that of MNIPs324mGN / g / g. The adsorption kinetics and isotherm model analysis showed that the correlation coefficient of MMIPs to DBP isotherm model was 0.999, and the correlation coefficient of kinetic Pseudo-secondary order model was 0.979 7. The imprinting factors of DBP and DEHP were 1.53n2.21 and 1.39, respectively, which showed higher imprinting factor and better recognition performance for DBP. The adsorption ability of the magnetic molecularly imprinted polymer to DBP decreased only by 12.3i after regeneration for 5 times, which indicated that the regeneration cycle was better.
【作者单位】：江苏大学环境与安全工程学院;江苏大学材料科学与工程学院;
【基金】：国家自然科学基金项目(No.21677064) 中国博士后自然科学基金项目(No.2015T80515) 江苏省自然科学基金项目(Nos.BK20151323,BK20151337)资助~~
【分类号】：O631.3

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