高容量分子印迹聚合物的制备及表征  

The Synthesis and Characterization of Metsulforon Methyl Imprinted Polymers with High Binding Capacity

作　　者：尹艳凤[1,2] 王安群[1] 沈华[1] 李倦生[1] 姚运先[1] 陈小明[2] 

机构地区：[1]长沙环境保护职业技术学院,湖南长沙410004 [2]湘潭大学,湖南湘潭411103

出　　处：《分析科学学报》2009年第4期414-418,共5页Journal of Analytical Science

摘　　要：以α-甲基丙烯酸和4-乙烯基吡啶为二元功能单体,乙二醇二甲基丙烯酸酯为交联剂,偶氮二异丁腈为引发剂,氯仿为致孔剂用本体聚合法合成了甲磺隆分子印迹三元共聚物,并用固相萃取方法对该聚合物在有机相及水相中的键合容量进行了评价,与同一条件用单一单体合成的聚合物的键合容量进行了比较,发现该三元共聚物在有机相中每克聚合物可键合20.5 mg的甲磺隆分子,水相中每克聚合物可键合19.2 mg的甲磺隆分子。采用核磁滴定对三元共聚体系的预聚溶液中分子作用力进行了研究,发现三元体系的预聚溶液中分子间作用力引起的位移变化幅度比二元体系的预聚溶液的变化大很多,这说明形成了更强的作用位点。In this thesis, the molecularly and 4-vinylpyridine as α-functional imprinted terpolymer were synthesized using a-methacrylic acid monomers, ethylene glycol dimethacrylate as crosslinker, azobisisobutyronitrile as initiator, chloroform as porogenic reagent and metsulfuron methyl as template molecules by bulk polymerization. The binding capacity of MIPs in organic and aqueous systems were evaluated by solid phase extration. The binding capacity of terpolymer is 20.5 mg in organic system and 19.2 mg in water system, which is much higher than that of the bipolymers, and is very useful for the recovery from the waste of metsulfuron methyl factory. The proton nuclear magnetic resonance （1H NMR）titration test was further used to study the phenomenon of high capacity, and the results indicated that there was obvious hydrogen bond interaction between MSM and the co-monomers of methacrylic acid and 4-vinylpyridine, which indicated that the stronger sites were formed.

关 键 词：甲磺隆 固相萃取 本体聚合 键合容量 

分 类 号：O657.32[理学—分析化学]