复凝聚法制备磁性微胶囊及其磁响应特性.pdf

·54· 材料导报B：研究篇 复凝聚法制备磁性微胶囊及其磁响应特性。 周建林，罗艳，钟毅 (东华大学化学化t与生物工程学院，上海201620) 摘要 采用复凝聚法，以亲油改性的纳米FeaOl为磁性颗粒，白油为分散介质，明胶、阿扛伯胶为壁材，在不同 工艺条件下制备磁性微胶囊。通过激光粒度分析仪测试微胶囊的粒径及粒径分布，采用光学显微镜和扫描电子显微 镜(SEM)，E察微胺囊的表面形貌及分散状态，借助磁铁和振动样品磁强计(VSM)测试微胶囊的磁响应性能。结果 pH=3．8、芯壁比1：1、搅拌速率600r／min条件下制备的微胶囊形状规整性及单分散性好，且囊壁透明、表面光滑， 具有良好的磁响应性能，可应用于磁泳显示和靶向药物传榆领域。 关键词 复凝聚法制备条件磁性微胶囊磁响应 中图分类号：TQ58 文献标识码：A and of PreparationMagneticResponse PropertyMagneticMicrocapsule Coacervation Complex by ZHOU Yi Yan，ZHONG Jianlin，LUO of 8L 201620) (CollegeChemistry．ChemicalEngineeringBiotechnology，DonghuaUniversity，Shanghai Abstract atoleineand ascore Magneticmicrocapsulesconmining hydrophobicFe3(h material，were prepared from meansof coacervationmethod．Thesizeandsizedistributionof gelatin，arabicgumby complex particle magnetic weredetermined size and of mierocapsules byparticleanalyzer．Morphology were dispersibilitymagneticmierocapsule observed and electron of mi· byopticalmicroscopescanning microscope(SEM)．Magneticresponsepropertymagnetic wasmeasured and resultsshowthat emcapsules bymagnetvibratingsamplemagnetometer(VSM)．Therateof