Author/Authors :
Sun، نويسنده , , Hanwen and Hong، نويسنده , , Jun and Meng، نويسنده , , Fanzong and Gong، نويسنده , , Peijun and Yu، نويسنده , , Jiahui and Xue، نويسنده , , Yanling and Zhao، نويسنده , , Sufang and Xu، نويسنده , , Dongmei and Dong، نويسنده , , Li and Yao، نويسنده , , Side، نويسنده ,
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.
Keywords :
magnetite , Photochemical polymerization , Coating , core-shell structure
