Preparation and electromagnetic properties of the BaFe12O19/multiwall carbon nanotubes/poly(3-methyl-thiophene) composites

The BaFe 12 O 19 /multiwall carbon nanotubes/poly(3-methyl-thiophene) (BaFe 12 O 19 /MCNTs/P(3MT)) composites were synthesized through an in situ chemical polymerization of 3-methyl-thiophene (3MT) in the presence of BaFe 12 O 19 /MCNTs composite powders. The BaFe 12 O 19 /MCNTs/P(3MT) composites were characterized by the fourier transform infrared spectrometry (FTIR) and X-ray diffraction (XRD). The morphologies of the composites were observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The electric conductive properties were tested by a four-probe conductivity tester and the magnetic properties were measured by vibrating sample magnetometer (VSM). The electromagnetic performance tests showed that when the mass ratio of BaFe 12 O 19 to MCNTs was 0.4, and the BaFe 12 O 19 /MCNTs to P(3MT) was 0.15, the conductivity, saturation magnetization ( M s ) and residual magnetization ( M r ) of the BaFe 12 O 19 /MCNTs/P(3MT) composites achieved 166.740 S/m, 29.884 emu/g, and 17.581 emu/g, respectively. POLYM. COMPOS., 34:1801–1808, 2013. © 2013 Society of Plastics Engineers