Polyaniline nano-fibre and method for preparing same

Abstract

The invention relates to a polyaniline nanofiber and a method for making the same. The technique is characterized in that polyethyleneglycol with ether link functional group is taken as a templating agent, a homogeneous system of water and water-solubility organic solvent is taken as a reacting medium, ammonium persulfate is taken as an oxidizer, hydrochloric acid is taken as doping acid; the compositions in mixture ratio are: 0.5 to 10.0g of polyethyleneglycol, 30 to 150 ml of the homogeneous system of water and water-solubility organic solvent and 5 to 20 ml of hydrochloric acid, 2.0 to 20.0g of ammonium persulfate, and 2 to 10 ml of aniline, wherein, the volume content of the water-solubility organic solvent is between 0 and 100 percent. The method for making the polyaniline nanofiber has little environmental pollution, simple technique and high productivity and is easy to produce industrially; the obtained polyaniline nanofiber has good electroconductibility and thermal stability. The polyaniline nanofiber synthesized by the method can be applied to the fields such as an antistatic material, an electromagnetic screen material, a sensor, a secondary battery, a camouflage material, an anti-rot material and a nano functional device.

Description

technical field [0001] The invention relates to a polyaniline nanofiber and a preparation method thereof. The homogeneous system composed of polyethylene glycol containing ether bond functional groups as a template, hydrochloric acid as a dopant, water and a water-soluble organic solvent as a reaction medium is used as a reaction medium. Chemical oxidation is prepared through a series of steps. Background technique [0002] One-dimensional polyaniline nanostructures such as nanowires, nanotubes, nanorods, and nanofibers have different properties from ordinary polyaniline random particles, and play an important role in the manufacture of nanofunctional devices. When the characteristic dimensions of a material reach the nanometer scale, its performance will change significantly relative to the bulk material. In recent years, researchers have made great progress in the preparation of polyaniline nanofibers, but the preparation of polyaniline nanofibers with controllable size, ...

AI Technical Summary

Problems solved by technology

[0003] The methods currently used to prepare polyaniline nanofibers are mainly template methods, self-assembly methods, interfacial polymerization and other methods. These methods generally have the following problems: (1) the template agent used after the aniline polymerization is completed is not easy to remove; (2) the reaction Environmental pollution of oil-phase organic solvents in the medium; (3) high production costs; (4) difficulty in controlling the shape parameters of polyaniline nanofibers, etc.

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