CAJ | 학술논문

以表面修饰双键的 Fe3O4@ SiO2纳米颗粒为基体，以萘夫西林（nafcillin）为模板，甲基丙烯酸（MAA）为单体，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，采用三步升温聚合法合成了核壳结构的萘夫西林磁性分子印迹聚合物。采用傅里叶变换红外光谱仪（ FT-IR ）、透射电子显微镜（ TEM ）、X 射线衍射仪（ XRD）和振动样品磁强计（ VSM）对制备的印迹聚合物微球进行了表征，得到的磁性印迹聚合物微球的粒径在320 nm左右，大小均匀，分散性较好，可以在外加磁场下与溶剂实现快速分离。对磁性印迹和非印迹聚合物进行了吸附性能研究，结果表明该印迹聚合物微球对模板分子具有很高的吸附容量（50.7 mg／g），特异性识别性能良好（印迹因子为2.46），有望应用于实际样品中萘夫西林残留量的富集分析。
이표면수식쌍건적 Fe3O4@ SiO2납미과립위기체，이내부서림（nafcillin）위모판，갑기병희산（MAA）위단체，을이순이갑기병희산지（ EGDMA）위교련제，우담이이정정（ AIBN）위인발제，채용삼보승온취합법합성료핵각결구적내부서림자성분자인적취합물。채용부리협변환홍외광보의（ FT-IR ）、투사전자현미경（ TEM ）、X 사선연사의（ XRD）화진동양품자강계（ VSM）대제비적인적취합물미구진행료표정，득도적자성인적취합물미구적립경재320 nm좌우，대소균균，분산성교호，가이재외가자장하여용제실현쾌속분리。대자성인적화비인적취합물진행료흡부성능연구，결과표명해인적취합물미구대모판분자구유흔고적흡부용량（50.7 mg／g），특이성식별성능량호（인적인자위2.46），유망응용우실제양품중내부서림잔류량적부집분석。
The uniform core-shell nanostructured magnetic molecularly imprinted polymers ( MIPs)were synthesized using antibiotic nafcillin as a template. In this protocol,the magnetite nanoparticles( NPs)were synthesized by the solvothermal reaction firstly. Subsequently,the vinyl groups were grated onto silica-modified Fe 3 O 4 surface by 3-methacryloyloxypropyltrime-thoxysilane via sol-gel method. Finally,the nafcillin-MIPs film was formed on the surface of Fe3O4@SiO2 by the copolymerization of vinyl end group with functional monomer,methacrylic acid,cross-linking agent,ethylene glycol dimethacrylate,the initiator azo-bis-isobutyronitrile and template molecule. The morphological and magnetic characteristics of the MIPs were char-acterized by transmission electron microscopy,Fourier transform infrared spectroscopy,X-ray diffraction and vibrating sample magnetometer. The obtained spherical magnetic MIPs with diameters of about 320 nm had good monodispersity. The static binding experiment was carried out to evaluate the properties of magnetic MIPs and non imprinted polymers ( NIPs ). The results demonstrated that the magnetic MIPs had high adsorption capacity to template and good selectivity. The imprinting factor and the maximum adsorption capacity of Fe3O4@MIPs to naf-cillin were 2. 46 and 50. 7 mg/g,respectively. It is expected that the prepared magnetic MIPs could be used for the enrichment of nafcillin in complex samples.