Soluble polyaniline conductive nanofiber and preparation method thereof

A technology of conductive nanometer and polyaniline, which is applied in the field of soluble polyaniline conductive nanofiber and its preparation, can solve the problems of not forming a three-dimensional network structure, poor repeatability of the preparation method, limited application scope, etc., achieving regular size and reducing the possibility of , the effect of expanding the scope of application

Inactive Publication Date: 2011-05-18
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both polyaniline conductive nanofibers and their preparation methods have shortcomings. First, the surface of polyaniline conductive nanofibers is rough, the shape is irregular, and the fibers are partially agglomerated and there are a small number of micron particles on them. Grade spherical particles, the intertwining of fibers is irregular and disorderly, without forming a good three-dimensional network structure; secondly, polyaniline conductive nanofibers are only well solubl

Method used

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  • Soluble polyaniline conductive nanofiber and preparation method thereof
  • Soluble polyaniline conductive nanofiber and preparation method thereof
  • Soluble polyaniline conductive nanofiber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The concrete steps of preparation are:

[0024] Step 1: firstly mix aniline and co-stabilizer in a weight ratio of 48:1.2 and then stir for 15 minutes; wherein the co-stabilizer is hexadecane to obtain an oil phase liquid. Then, the emulsifier and water were mixed according to the weight ratio of 1.2:430 and then stirred for 15 minutes; wherein, the emulsifier was cetyl sodium sulfate to obtain an aqueous phase liquid. Next, first mix the oil phase liquid and the water phase liquid and then stir for 15 minutes; wherein, the weight ratio between the aniline in the oil phase liquid and the emulsifier in the water phase liquid is 48:1.2. Then place it in an ultrasonic wave and homogenize it for 10 minutes to obtain a miniemulsion.

[0025]Step 2, first add protonic acid solution to the miniemulsion and then stir for 10 minutes; wherein, the weight ratio between aniline and protonic acid in the miniemulsion is 2.2:1, the protonic acid is hydrochloric acid, and its concentr...

Embodiment 2

[0028] The concrete steps of preparation are:

[0029] Step 1: firstly mix aniline and co-stabilizer in a weight ratio of 49:1.1 and then stir for 17 minutes; wherein the co-stabilizer is hexadecane to obtain an oil phase liquid. Then the emulsifier and water were mixed according to the weight ratio of 1.1:440 and then stirred for 17 minutes; wherein, the emulsifier was cetyl sodium sulfate to obtain an aqueous phase liquid. Next, first mix the oil phase liquid and the water phase liquid and then stir for 17 minutes; wherein, the weight ratio between the aniline in the oil phase liquid and the emulsifier in the water phase liquid is 49:1.1. Then place it in an ultrasonic wave and homogenize it for 11 minutes to obtain a miniemulsion.

[0030] Step 2, first add protonic acid solution to the miniemulsion and then stir for 11 minutes; wherein, the weight ratio between aniline and protonic acid in the miniemulsion is 2.3:1, the protonic acid is hydrochloric acid, and its concentr...

Embodiment 3

[0033] The concrete steps of preparation are:

[0034] Step 1, first mix aniline and co-stabilizer in a weight ratio of 50:1 and then stir for 20 minutes; wherein the co-stabilizer is hexadecane to obtain an oil phase liquid. Then, the emulsifier and water were mixed according to the weight ratio of 1:450 and then stirred for 20 minutes; wherein, the emulsifier was cetyl sodium sulfate to obtain an aqueous phase liquid. Next, first mix the oil phase liquid and the water phase liquid and then stir for 20 minutes; wherein, the weight ratio between the aniline in the oil phase liquid and the emulsifier in the water phase liquid is 50:1. Then place it in an ultrasonic wave and homogenize it for 13 minutes to obtain a miniemulsion.

[0035] Step 2, first add protonic acid solution to the miniemulsion and then stir for 13 minutes; wherein, the weight ratio between aniline and protonic acid in the miniemulsion is 2.3:1, the protonic acid is hydrochloric acid, and its concentration i...

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Abstract

The invention discloses a soluble polyaniline conductive nanofiber and a preparation method thereof. The fibers have smooth surfaces and uniform shapes, are crossed and automatically assembled to form a regular nanoscale three-dimensional net, and have the solubility of more than or equal to 10 mg/ml in a solvent which may be water, ethanol, ethylene glycol, N,N-dimethylformamide or dimethyl sulfoxide. The method comprises the following steps of: first mixing aniline with an auxiliary stabilizer with stirring to obtain oil phase liquid, mixing an emulsifier with the water with stirring to obtain water phase liquid, mixing the oil phase liquid with the water phase liquid with stirring and placing the mixture in ultrasonic waves for homogenization to obtain miniemulsion; then adding protonic acid solution into the miniemulsion for stirring to obtain mixed solution, and adding the aqueous solution of oxidant dropwise into the mixed solution for reaction to obtain dark green solution; and finally performing centrifugation treatment on the dark green solution to obtain precipitates, washing the precipitates with the ethanol and the water, and drying the washed precipitates to obtain the soluble polyaniline conductive nanofibers. The polyaniline conductive nanofiber and the preparation method thereof can be widely used for the connection, functional units and the like of nanoscale electronic devices, photoelectronic devices, electrochemical devices and electromechanical devices.

Description

technical field [0001] The invention relates to a nanofiber and a preparation method thereof, in particular to a soluble polyaniline conductive nanofiber and a preparation method thereof. Background technique [0002] Among many conductive polymers, polyaniline is considered to be the most promising conductive polymer due to its easy availability of monomers, diverse structures, unique doping mechanism and good environmental stability. However, the conductive polyaniline synthesized by traditional chemical methods exhibits a granular aggregate structure, which has the disadvantages of insoluble, infusible and poor processability, which makes it difficult to realize industrial production of polyaniline. The preparation of conductive polyaniline with nanofibrous structure is one of the effective ways to improve its processability and mechanical properties. Polyaniline nanofibers have different electronic, optical, chemical, and thermal properties than bulk polyaniline, and pl...

Claims

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Application Information

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IPC IPC(8): C08G73/02
Inventor 王化王若溪王磊田兴友
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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