کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1442443 | 1509451 | 2009 | 5 صفحه PDF | دانلود رایگان |
Flake-like polypyrrole/SrFe12O19 composites were synthesized by in situ polymerization method. The samples were characterized by SEM, XRD and IR technology. Flocs-like SrFe12O19 was synthesized by sol–gel method using the absorbent cotton as template for the first time. A possible mechanism for the formation of flocs-like SrFe12O19 had been proposed. Then the flocs-like SrFe12O19 was used as template for the preparation of polypyrrole/SrFe12O19 composites. Two kinds of surface active agents were used for the surface treatment of the flocs-like SrFe12O19. It was found that the comprehensive magnetic property for the flocs-like SrFe12O19 was superior to the sphericity-like SrFe12O19 for the excellent magnetic aeolotropism of the flocs-like SrFe12O19. The coercivity (Hc) for the flake polypyrrole/SrFe12O19 composites was far greater than the pure flocs-like SrFe12O19. The effect of the surface active agents on the morphology and properties of flake-like polypyrrole/SrFe12O19 composites was studied in the text.
Journal: Synthetic Metals - Volume 159, Issues 19–20, October 2009, Pages 2029–2033