Preparation of Conducting Polyaniline-Bismuth Nanoparticle Composites by Planetary Ball Milling

作者：Anno H^*; Fukamoto M; Heta Y; Koga K; Itahara H; Asahi R; Satomura R; Sannomiya M; Toshima N

来源：Journal of Electronic Materials, 2009, 38(7): 1443-1449.

DOI：10.1007/s11664-009-0786-3

• Thermoelectric material
• conducting polymer
• polyaniline
• bismuth
• nanoparticle
• nanocomposite
• planetary ball milling
• cast film
• Seebeck coefficient
• electrical conductivity

Conducting polyaniline (PANi)/Bi nanoparticle composites have been prepared using a planetary ball-milling technique. PANi powder and (+/-)-10-camphorsulfonic acid (CSA) as a charge carrier dopant were dissolved in m-cresol. The solution and Bi powder (under 90 mu m) with different values of the molar ratio R = aniline/Bi, R = 0.1 to 1, were encased in a zirconia pot with zirconia balls, then milled at a rotating velocity of 600 rpm for 6 h to 12 h. X-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectroscopy, ultraviolet-visible (UV-Vis) transmission spectroscopy, thermal gravimetric analysis, and differential thermal analysis were used to characterize the CSA-doped PANi/Bi nanoparticle composites. Bi nanoparticles ranging in size from several tens of nanometers to a few hundred nanometers were dispersed in the CSA-doped PANi matrix. PANi also acted as a protection agent for Bi particles from aggregation and perhaps oxidation. The CSA-doped PANi/Bi nanocomposite films were obtained by casting the dispersed solution onto a quartz substrate and drying. The Seebeck coefficient and the electrical conductivity of the films were measured in the temperature range from room temperature to similar to 400 K.

• 出版日期2009-7