摘要
采用微波辐射法制备了Fe3O4-聚苯乙烯复合磁性微球。通过Fe3O4磁流体的制备及改性,利用微波辐射使苯乙烯自聚反应能够在Fe3O4磁性颗粒表面顺利进行,最终得到复合磁性微球。实验考察了微波功率大小、聚合反应体系pH值、磁流体用量等反应条件的影响,通过红外谱图、热重谱图分析了产物的结构和热稳定性,利用沉降实验定性地表征了产物的磁响应性。结果表明:微波功率为130 W时能迅速成功地制备出磁含量为24.47%的复合磁性微球。
The magnetic composite microsphere of polystyrene with Fe3O4 were prepared by microwave irradiate polymerization using styrene as the monomer in the present of magnetic fluid, in which the magnetic nanoparticles of Fe3O4 coating with PEG were synthesised by the chemical cop recipitation method. The microwave power, the pH val- ue of polymerization system and the mass of the magnetic fluid were exactly experimented. The structure, thermal stal- ibility were charactered by FT- IR and TG respectively. The magnetic properties were qualitative analysised by sedi- mentation experiment. The results showed that the magnetic composite microsphere with the content of Fe3O4 amount to 24.47% could be prepared by microwave irradiate polymerization under the microwave power of 130W.
出处
《化工时刊》
CAS
2009年第10期1-4,共4页
Chemical Industry Times
基金
安徽理工大学青年科学研究基金资助(QN200715)
关键词
微波辐射
磁流体
复合磁性微球
microwave irradiation magnetic fluid magnetic composite microsphere
作者简介
作者简介：杨永辉（1977～），男，硕士，讲师。研究方向：催化新材料。
