中山大学学报（自然科学版）2016，Vol.55Issue(4)：75-80,6.DOI:10.13471/j.cnki.acta.snus.2016.04.013
双重磁响应复合微球的制备及吸附性能研究
Synthesis and adsorption properties of composite microsphere with dual-magnetic responses
摘要
Abstract
Seed emulsion polymerization was carried out to fabricate a novel class of thermo-sensitive Fe3 O4@poly (N-isopropylacrylamide-co-styrene)composite microspheres (Fe3 O4@P(NIPAM-co-St)).The structures of the as-prepared composite microspheres were characterized by TEM,FTIR,DLS,TGA and VSM.UV-Vis was employed to investigate the adsorption and magnetic-induced desorption behaviors using Rhodamine B (RhB)as a model molecule.The results indicated that the composite microspheres possessed a unique multi-core-shell structure.The magnetic nanoparticle content and saturation magnetic induction intensity of microspheres decreased with an increase of the St content during polymerization. RhB adsorption performance was improved when a proper amount of hydrophobic St comonomer was intro-duced into microspheres.The composite microspheres showed a high RhB adsorption capacity of up to 13.31 mg/g under an acid condition.As compared with the free desorption under room temperature, much more RhB on the composite microspheres could be desorbed under alternating magnetic field.The adsorption capacity of composite microsphere still achieved 8.82 mg/g after five adsorption /desorption cy-cles,indicating good dual-magnetic responses (magnetic separation and magnetic-induced desorption).关键词
复合微球/温敏/双重磁响应/吸附/再生Key words
composite microsphere/thermo-sensitive/dual-magnetic responses/adsorption/regenera-tion分类
通用工业技术引用本文复制引用
蔡力锋,王春丽,林旺,吴丁财..双重磁响应复合微球的制备及吸附性能研究[J].中山大学学报（自然科学版）,2016,55(4):75-80,6.基金项目
国家自然科学基金资助项目（51422307，51372280）；福建省科技厅对外合作资助项目（2015I0014）；福建省教育厅科技资助项目（JK2014043）；广东省自然科学杰出青年基金资助项目（S2013050014408）；广东特支计划科技创新青年拔尖人才资助项目（2014TQ01C337）；中山大学聚合物复合材料及功能材料教育部重点实验室开放课题资助项目 （）
