Abstract
A novel synthesis method of polymer-coated magnetic nanoparticles was developed. UV-induced photochemical polymerization of acrylamide in magnetite aqueous suspension was performed to obtain core-shell structure polyacrylamide-coated magnetic nanoparticles. The mechanism of UV-induced photochemical coating was discussed. The morphology, crystalline structure and magnetic properties of polyacrylamide-coated magnetic nanoparticles were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM), respectively. Superparamagnetic behaviors, high saturation magnetization and good response to external magnetic field were confirmed by the measurement of magnetic hysteresis curves.
| Original language | English |
|---|---|
| Pages (from-to) | 250-254 |
| Number of pages | 5 |
| Journal | Surface and Coatings Technology |
| Volume | 201 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - 12 Sep 2006 |
| Externally published | Yes |
Keywords
- Coating
- Core-shell structure
- Magnetite
- Photochemical polymerization