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Hybridization material of Nano fiber of titanium oxide / polyaniline, and preparation method

A technology of nanofibers and hybrid materials, applied in the field of nano-hybrid materials and their preparation, can solve the problems of high use cost, poor processability of conductive polymers, low mechanical strength, etc., and achieves low price, components and performance. The effect of easy control and simple preparation process

Inactive Publication Date: 2007-10-10
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conductivity of conductive polymers with micro / nano structures strongly depends on factors such as doping concentration, dopant, synthesis conditions, morphology, pipe diameter, measurement temperature, external pressure, etc. However, conductive polymers have poor processability, Low mechanical strength, high use cost and other shortcomings, so it is limited in practical application (Chinese invention patent 2004100989231)

Method used

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  • Hybridization material of Nano fiber of titanium oxide / polyaniline, and preparation method
  • Hybridization material of Nano fiber of titanium oxide / polyaniline, and preparation method
  • Hybridization material of Nano fiber of titanium oxide / polyaniline, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0024] Example 2 (polyaniline nanofibers)

[0025] 20mmol of aniline monomer and 0.50g of polyvinyl pyrrolidone (PVP) were added to 60ml of 1M hydrochloric acid aqueous solution and stirred, and stirred at room temperature for 24 hours to make the whole system dispersed uniformly; 5.0mmol of ammonium persulfate was added to 60ml of 1M hydrochloric acid solution and stirred well, Then under the condition of rapid stirring, the ammonium persulfate solution was quickly poured into the aniline solution, and the product was filtered after half an hour of polymerization, and repeatedly washed with deionized water until the filtrate was colorless, and the unreacted monomers, initiators, Surfactant, etc.; then transfer the filter cake into a vacuum drying oven, vacuum dry at 80°C for 4 hours, and grind the particles to obtain polyaniline nanofiber particles.

[0026] The lens photo of the polyaniline nanofiber particles is shown in Figure 2. The diameter of the nan...

Embodiment 3

[0027] Example 3 (titanium oxide / polyaniline nanofiber hybrid material)

[0028] First, 0.5g of titanium oxide powder was added to 30ml of 10M potassium hydroxide solution, stirred at room temperature for half an hour, all transferred to a hydrothermal kettle with a polytetrafluoroethylene lining, heated in a closed state, and maintained at 180 ° C for reaction For 48 hours, the product was repeatedly washed and filtered with 0.1M hydrochloric acid solution and deionized water until the pH value of the filtrate was less than 7. The filter cake was transferred to a vacuum drying oven, and vacuum-dried at 80 ° C for 4 hours to obtain titanium oxide nanorods. Then add the titanium oxide nanorods of 0.2g in the 1M hydrochloric acid aqueous solution of 60ml and stir, then add 20mmol aniline monomer, and continue to stir at room temperature for 24 hours to make the whole system uniformly dispersed; 5mmol ammonium persulfate is added to the 1M hydrochloric acid solu...

Embodiment 4

[0029] Embodiment 4 (titanium oxide / polyaniline nanofiber hybrid material):

[0030] First, 0.5g of titanium oxide powder was added to 30ml of 10M potassium hydroxide solution, stirred at room temperature for half an hour, all transferred to a hydrothermal kettle with a polytetrafluoroethylene lining, heated in a closed state, and maintained at 180 ° C for reaction For 48 hours, the product was repeatedly washed and filtered with 0.1M hydrochloric acid solution and deionized water until the pH value of the filtrate was less than 7. The filter cake was transferred to a vacuum drying oven, and vacuum-dried at 80 ° C for 4 hours to obtain titanium oxide nanorods. ; Add the titanium oxide nanorods of 0.2g to the 1M aqueous hydrochloric acid solution of 60ml and stir evenly, then add 20mmol of aniline monomer and 0.50g of polyvinyl pyrrolidone (PVP), and continue to stir at room temperature for 24 hours to make the whole system uniformly dispersed; 5mmol of ammoni...

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Abstract

This invention relates to a method for preparing TiO2 / polyaniline nanofiber hybrid material. The hybrid material is composite nanoparticles composed of 20-70 wt. % one-dimensional TiO2 nanorods and polyaniline nanofibers. The hybrid material is prepared by combination of template-induced polymerization and hydrothermal method from TiO2 and aniline with HCl as the dopant, ammonium persulfate as the initiator, and poly (vinyl pyrrolidone) as the surfactant. The ratio of polyaniline to ammonium persulfate is 4:1. The hybrid material has such advantages as high thermal stability, good mechanical properties, low cost, abundant and cheap raw materials, no toxicity, no harm, simple process, and controllable composition and properties.

Description

technical field [0001] The invention relates to a nanometer hybrid material and a preparation technology thereof, in particular to a titanium oxide / polyaniline nanofiber hybrid material and a preparation method thereof. Background technique [0002] Organic / inorganic composites not only combine the elasticity, toughness, and processability of organic materials, but also combine the rigidity, dimensional stability and thermal stability of inorganic materials. The low-dimensional organic / inorganic composites further combine the advantages of nanomaterials, and the composites have strong synergistic effects, thus exhibiting mechanical, thermal, electrical, magnetic and optical properties different from general macroscopic composites. [0003] Due to their unique properties, organic conductive materials have broad application prospects in such fields as chemical sensors, batteries, optical materials, electronic cables, electromagnetic shielding, microwave stealth, etc., and have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08K3/22C08J3/12C08G73/02
Inventor 王宝祥薛冬峰石勇薛方红王立秋
Owner DALIAN UNIV OF TECH
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