An Efficient Molten Salt Method to Fabricate Light-colored Conductive Whiskers for Fibers

Abstract

One-dimensional titanium dioxide (TiO₂) whiskers with controllable aspect ratios were synthesized by molten salt method adopting anatase TiO₂ nanoparticles as precursor, sodium chloride (NaCl) and dibasic sodium phosphate (Na₂HPO₄) as medium. The particle size of TiO₂ nanoparticles and ratio of precursor and medium that can help to generate high aspect ratio TiO₂ whiskers were studied and selected. Light-colored antimony-doped tin oxide @ titanium dioxide (ATO@TiO₂) conductive whiskers were prepared by coating ATO on TiO₂ whiskers through coprecipitation then. Finally, the ATO@TiO₂ light-colored conductive whiskers were dispersed in polyacrylonitrile (PAN) to fabricate light-colored conductive fibers. The experimental results show that the ATO@TiO₂ whiskers exhibits ideal whiteness and conductivity with 65.5 Wb and 106 Ω·cm, respectively, and the resistivity of conductive fibers was 6.07×10⁶ Ω·cm with 15wt% whisker content.

Keywords

molten salt method / light-colored / conductive fibers / antimony-doped tin oxide @ titanium dioxide (ATO@TiO₂)

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Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature