采用多聚磷酸钠(STPP)对Fe_3O_4磁性纳米粒子进行表面改性,制备稳定的水基磁流体.通过傅里叶变换红外光谱(FTIR)、热重分析(TG)、透射电镜(TEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)、振动样品磁强计(VSM)及Zeta电位仪对所制备的磁流体进行表征.结果表明,STPP包覆于Fe_3O_4磁性纳米粒子的表面,当pH>3时,粒子表面带有负电荷;磁性测试结果表明,STPP/Fe_3O_4磁性纳米粒子具有超顺磁性,其饱和磁化强度为62.3 A·m~2·kg~(-1).
参考文献
| [1] | Lee J.;Senna M.;Isobe T. .PREPARATION OF ULTRAFINE FE3O4 PARTICLES BY PRECIPITATION IN THE PRESENCE OF PVA AT HIGH PH[J].Journal of Colloid and Interface Science,1996(2):490-494. |
| [2] | 苑星海,许雪燕.琼脂改性水基Fe3O4磁性液体的研制[J].材料工程,2008(10):32-34. |
| [3] | Chao Hui;Chengmin Shen;Tianzhong Yang .Large-Scale Fe3O4 Nanoparticles Soluble in Water Synthesized by a Facile Method[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2008(30):11336-11339. |
| [4] | Aiguo Yan;Xiaohe Liu;Guanzhou Qiu .Solvothermal synthesis and characterization of size-controlled Fe_3O_4 nanoparticles[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):487-491. |
| [5] | 熊雷,姜宏伟,王迪珍.PVP-b-PLA 修饰 Fe3O4 磁性纳米粒子的制备与表征[J].高分子学报,2008(08):791-796. |
| [6] | Katas H;Alpar HO .Development and characterisation of chitosan nanoparticles for siRNA delivery[J].Journal of Controlled Release: Official Journal of the Controlled Release Society,2006(2):216-225. |
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