CAJ | 학술논문

采用层层自组装法合成了一种新型的磺丁醚-β-环糊精/Fe3O4杂化的磁性纳米复合体(SBE-β-CD/Fe3O4 MNP).β-环糊精与1,4-丁磺酸内酯发生亲核取代反应得到磺丁醚-β-环糊精,柠檬酸进一步修饰磺丁醚-β-环糊精使其具有羧基基团,与阿拉伯胶修饰后的含有氨基的磁性纳米粒子进行脱水缩合制得SBE-β-CD/Fe3O4 MNP.运用X射线衍射(XRD)、透射电镜(TEM)、动态光散射(DLS)、红外光谱法(FHR)和热重分析(TGA)方法进行表征,证实了Fe3O4 MNP上接枝了SBE-β-CD.根据热重分析曲线(TGA)可估算出磁性纳米粒子表面SBE-β-CD的量及每个Fe3O4磁性纳米粒子结合SBE-β-CD分子的个数.
채용층층자조장법합성료일충신형적광정미-β-배호정/Fe3O4잡화적자성납미복합체(SBE-β-CD/Fe3O4 MNP).β-배호정여1,4-정광산내지발생친핵취대반응득도광정미-β-배호정,저몽산진일보수식광정미-β-배호정사기구유최기기단,여아랍백효수식후적함유안기적자성납미입자진행탈수축합제득SBE-β-CD/Fe3O4 MNP.운용X사선연사(XRD)、투사전경(TEM)、동태광산사(DLS)、홍외광보법(FHR)화열중분석(TGA)방법진행표정,증실료Fe3O4 MNP상접지료SBE-β-CD.근거열중분석곡선(TGA)가고산출자성납미입자표면SBE-β-CD적량급매개Fe3O4자성납미입자결합SBE-β-CD분자적개수.
A novel magnetic nano-composite from the combination of Fe3O4 magnetic nanoparticles(MNP) and sulfobutylether-β-CD(SBE-β-CD) has been developed.Fabrication of composite SBE-β-CD/Fe3O4 M NP is based on conjugating the citrate-modified SBE-β-CD onto the gum arabic-modified MNP via carbodiimide activation.The structural property,morphology and hydrodynamic diameter distribution were characterized by X-ray diffraction ( XRD),transmission electron microscopy (TEM) and dynamic light scattering( DLS),respectively.The SBE-β-CD grafting was confirmed by Fourier transformation-infrared spectrometry(FTIR).The amount of SBE-β-CD grafted on MNP and the number of SBE-β-CD molecules immobilized on each MNP were determined by thermogravimetric analysis (TGA).