化学研究与应用
化學研究與應用
화학연구여응용
CHEMICAL RESEARCH AND APPLICATION
2014年
1期
55-59
,共5页
分子印迹%活性/可控%沉淀聚合
分子印跡%活性/可控%沉澱聚閤
분자인적%활성/가공%침정취합
molecular imprinting%living/controlled%precipitation polymerization
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。
以奎寧分子為模闆,甲基丙烯痠( MAA)為功能單體,乙二醇二甲基丙烯痠酯( EDMA)為交聯劑,二硫代四乙基鞦蘭姆( TED)為活性/可控引髮劑,將可逆加成-斷裂鏈轉移自由基聚閤與沉澱聚閤相結閤,製備微米級的毬形奎寧分子印跡聚閤物。併用掃描電鏡和激光粒度掃描對聚閤物粒子進行錶徵,結果顯示,活性/可控聚閤製備的分子印跡聚閤物呈均勻的毬形,其平均粒徑最大可達2.3μm。對不同底物的結閤實驗錶明,與傳統沉澱聚閤物相比,該分子印跡聚閤物錶現齣更高的絡閤容量和分子選擇性。
이규저분자위모판,갑기병희산( MAA)위공능단체,을이순이갑기병희산지( EDMA)위교련제,이류대사을기추란모( TED)위활성/가공인발제,장가역가성-단렬련전이자유기취합여침정취합상결합,제비미미급적구형규저분자인적취합물。병용소묘전경화격광립도소묘대취합물입자진행표정,결과현시,활성/가공취합제비적분자인적취합물정균균적구형,기평균립경최대가체2.3μm。대불동저물적결합실험표명,여전통침정취합물상비,해분자인적취합물표현출경고적락합용량화분자선택성。
The spherical molecularly imprinted polymers with micron-size were prepared by using quinine as template,methylacrylic acid( MAA) as functional monomer,ethylene glycol dimethacrylate( EDMA) as cross-linker and dithiotetraethylthiuram( TED) as the living/controlled initiator by combining reversible addition-fragmentation chain transfer radical polymerization with precipitation pol-ymerization. The polymeric particles were characterized by scanning electron microscopy and laser particle size analysis. The results show that the polymeric particles prepared by living/controlled polymerization present uniform spherical shape and its maximum av-erage diameter reach 2. 3 μm. The binding experiment towards different substrates indicates that the living/controlled molecularly imprinted polymer shows higher binding capacity and molecular selectivity than the traditional precipitation polymers.