论文部分内容阅读
以奎宁分子为模板,甲基丙烯酸(MAA)为功能单体,乙二醇二甲基丙烯酸酯(EDMA)为交联剂,二硫代四乙基秋兰姆(TED)为活性/可控引发剂,将可逆加成—断裂链转移自由基聚合与沉淀聚合相结合,制备微米级的球形奎宁分子印迹聚合物。并用扫描电镜和激光粒度扫描对聚合物粒子进行表征,结果显示,活性/可控聚合制备的分子印迹聚合物呈均匀的球形,其平均粒径最大可达2.3μm。对不同底物的结合实验表明,与传统沉淀聚合物相比,该分子印迹聚合物表现出更高的络合容量和分子选择性。
Using quinine as a template, methacrylic acid (MAA) as a functional monomer, ethylene glycol dimethacrylate (EDMA) as a cross-linking agent and dithioctylthiuram (TED) as an active / Controllable initiator, reversible addition-fragmentation chain transfer radical polymerization combined with precipitation polymerization to prepare micron-sized spherical quinine molecularly imprinted polymer. The morphology of polymer particles was characterized by scanning electron microscopy (SEM) and laser scanning electron microscopy (SEM). The results showed that the molecularly imprinted polymer prepared by the active / controlled polymerization was spherical and the average particle size was up to 2.3μm. The binding experiments on different substrates showed that the molecularly imprinted polymer showed higher complexing capacity and molecular selectivity than traditional precipitated polymers.