芦丁分子印迹聚合物的制备及其吸附性能的研究

以芦丁为模板分子,以α-甲基丙烯酸(MAA)和丙烯酰胺(AM)为功能单体,乙二醇二甲基丙烯酸酯(EGDMA)为交联剂,偶氮二异丁腈(AIBN)为引发剂,利用分子印迹技术在甲醇/水(V/V,1/4)溶剂中合成了芦丁分子印迹聚合物(MIPs),研究了不同功能单体及其用量和不同交联剂用量的聚合体系组成对印迹聚合物吸附特性的影响。对最佳比例制备的MIPs进行了吸附等温实验和Scatchard分析,其结合位点的离解常数Kd分别为105.26mg.L-1和1250mg.L-1,饱和吸附量Qmax分别为18.02mg.g-1和73.50mg.g-1。并利用红外光谱(IR)对分子印迹聚合物进行了表征。

Study on preparation and performance of rutin molecularly imprinted polymers

A series of molecularly imprinted polymers(MIPs)were prepared by the molecular template technology in methanol/water(V/V,1/4)with rutin as the template molecule,methacrylic acid(MAA)or acrylamide(AM)as the functional monomer,ethylene glycol dimethacrylate(EGDMA)as a crosslinker,and azobisisobutyronitrile(AIBN)as evocating agent,respectively.The effect of the composition of polymerization systems of different functional monomer and dosage of functional monomer and crosslinker on the adsorption property of MIPs were studied.The character trials which involved the determination of the binding isothermal,the analysis of Scatchard plot carried out on the MIPs.Scatchard analysis showed that two classes of binding sites were produced in the polymermatrix and their dissociation constants were calculated to be 105.26mg·L-1and 1250mg·L-1,and saturated adsorptive capacity were 18.02mg·g-1and 73.50mg·g-1,respectively.The results of IR demonstrated the formation of MIPs.