Research On Organic/TiO₂ Functional Hybrid Fibers

In this paper,the Titanium Dioxide/Polypyrrole?TiO₂/PPy?composite conductiving microspheres are used to modify the polyacrylonitrile?PAN?fiber and polyester?PET?fiber to improve their antistatic property.A facile solvothermal approach is employed to synthesize TiO₂ microspheres.TiO₂/PPy composite conducting microspheres are synthesized via chemical oxidative polymerization of pyrrole monomers on the surface of TiO₂ microspheres.?1?The blending PAN antistatic fiber are produced by wet spinning method,the TiO₂/PPy composite conducting microspheres are used as the antistatic additive in the PAN spinning solution??2?The PAN-PPy composite fibers are also produced by wet spinning method.Firstly,the PPy are synthesized in the PAN solution with the help of FeCl₃,then the PAN-PPy composite spinning solution are used to spin??3?The PET-PPy composite fibers are produced by chemical oxidative polymerization of pyrrole monomers on the surface of PET fibers.Firstly,the PET fibers after alkali treatment are immersed in aqueous solution containing FeCl₃,then the fibers are putted in the aqueous solution containing Py to make the PPy are polymerized on the surface of PET fibers??4?The TiO₂-PPy modified PET fibers can be obtained by putting the TiO₂ in the aqueous solution containing Py under the same reaction condition.The composite conducting microspheres were investigated by FTIR,the result shows that the composite conducting microspheres have both the PPy and TiO₂ characteristics peak,which suggests that PPy was successfully polymerized in the composite structure.The morpholoyies of TiO₂/PPy composite conducting microspheres were investigated by scanning electron microscope,the result shows that the TiO₂ microspheres with diameter of 2?m were obtained when 12.5 mL acetone,45 mL isopropyl alcohol and 1 mL TiCl₄ reactioned at 200^?C for 12 h by solvothermal treatment.Then the TiO₂ microspheres are used as matrix materials to prepare TiO₂/PPy composite conducting microspheres,the resistivity of TiO₂/PPy is 0.161??cm while n?Py?:n?TiO₂?is 2:1.The strength and electric conductivity of the composite fibers were tested,and the results show that the strength and resistivity of the composite fibers decrease while the amount of TiO₂/PPy and Py increasing.For the PET-PPy composite fibers,the intensity of fracture increase due to the increasing amount of PPy on the surface of fibers.For the composite PET fibers modified by TiO₂-PPy,the resistivity decreases with the increasing of m?PET?:m?TiO₂??The composite fibers have the lowest resistivity of 2.37??cm while m?PET?:m?TiO₂?is 5.