PANI/nano-ZnO Composites Prepared by In-situ Polymerization under Magnetic Field

After ZnO nanoparticles with diameter about 100 nm were surface modified by the coupling agent (KH550), polyaniline (PAN and polyaniline/nano-ZnO composites with weight-average molecular weight of 3 x 10(4) were synthesized by in-situ polymerization method in the presence of a constant magnetic field (0.4 T) and ethanol/water/dodecylbenzene sulfonic acid (DBSA) system. FT-IR spectra showed the characteristic peaks of PANT shifted to the lower wavenumber when nano-ZnO was loaded. Polyaniline and its composites had good solubility in chloroform and N-methyl pyrrolidone (higher than 80%). The effect of magnetic field and nano-ZnO on orientation structure of PANT were analyzed by X-ray diffraction (XRD). PANI had higher crystallinity and more obvious orientation structure under the magnetic field. Polyaniline/nano-ZnO composites had the remarkable electrical conductivity about 220 S/m and high transmittance about 80%. It is showed that PANT composites is very suitable to be used in the field of flexible optoelectronic devices.