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Preparation method of electric-conductive macromolecule polymer nanoparticles with good water phase dispersibility

A technology for conducting polymers and nanoparticles, applied in the field of preparation of polymer nanoparticles, can solve the problems affecting the conductivity of materials, high surface energy, particle coagulation, agglomeration, etc. Effect

Inactive Publication Date: 2019-01-22
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most conductive polymers, such as poly 3,4-ethylenedioxythiophene, polypyrrole, and polyaniline, have rigid conjugated chain structures, are generally insoluble and infusible, and are difficult to form and process, which is limited in practical applications.
Most conductive composite materials need to disperse conductive polymer nanoparticles in various solvent phases and then process them. However, due to the large specific surface area and high surface energy of conductive polymer nanoparticles, particles are prone to coagulation and agglomeration. Make the particle size larger, so it is easy to lose the function of nanoparticles
The traditional method of dispersing conductive nanoparticles is to add a dispersant, but adding a dispersant will affect the conductive properties of the material, thereby affecting the practical application of the material

Method used

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  • Preparation method of electric-conductive macromolecule polymer nanoparticles with good water phase dispersibility
  • Preparation method of electric-conductive macromolecule polymer nanoparticles with good water phase dispersibility
  • Preparation method of electric-conductive macromolecule polymer nanoparticles with good water phase dispersibility

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Experimental program
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Effect test

Embodiment 1

[0033] A. Preparation of 3,4-ethylenedioxythiophene monomer solution:

[0034] Add 3,4-ethylenedioxythiophene monomer into absolute ethanol and stir thoroughly to obtain a 3,4-ethylenedioxythiophene monomer solution with a mass concentration of 0.85%.

[0035] B. Preparation of persulfate aqueous solution:

[0036] A certain amount of ammonium persulfate was weighed and dissolved in deionized water to obtain an aqueous solution of ammonium persulfate with a mass concentration of 9.1%.

[0037] C. Preparation of poly-3,4-ethylenedioxythiophene nanoparticles:

[0038] Add ammonium persulfate aqueous solution to 3,4-ethylenedioxythiophene monomer solution, the mass ratio is 3,4-ethylenedioxythiophene monomer:ammonium persulfate=1:5, after stirring evenly, weigh ferric chloride , with a mass ratio of 3,4-ethylenedioxythiophene monomer: ferric chloride = 1:20, added to the above mixed solution, the color of the solution immediately turned blue-black, and stirred for 9 days under ...

Embodiment 2

[0040] A. Preparation of pyrrole monomer solution:

[0041] The pyrrole monomer was added into methanol and stirred thoroughly to obtain a pyrrole monomer solution with a mass concentration of 1.2%.

[0042] B. Preparation of persulfate aqueous solution:

[0043] A certain amount of sodium persulfate was weighed and dissolved in deionized water to obtain an aqueous sodium persulfate solution with a mass concentration of 15%.

[0044] C. Preparation of Polypyrrole Nanoparticles:

[0045] Add sodium persulfate aqueous solution to the pyrrole monomer solution, the mass ratio is pyrrole monomer: sodium persulfate = 1:3, after stirring evenly, weigh the ferric sulfate. The mass ratio is pyrrole monomer: ferric sulfate = 1:15, when added to the above mixed solution, the color of the solution immediately turns blue-black, and it is stirred for 7 days in an ice bath. Then, centrifuge and wash 3 times with deionized water. The obtained black polypyrrole monomer nanoparticles are di...

Embodiment 3

[0047] A. Preparation of aniline monomer solution:

[0048] Adding the aniline monomer into glycerol and stirring thoroughly to obtain an aniline monomer solution with a mass concentration of 0.5%.

[0049] B. Preparation of persulfate aqueous solution:

[0050] A certain amount of potassium persulfate was weighed and dissolved in deionized water to obtain an aqueous solution of potassium persulfate with a mass concentration of 7.2%.

[0051] C. Preparation of polyaniline nanoparticles:

[0052]Add potassium persulfate aqueous solution to the aniline monomer solution, the mass ratio is aniline monomer: potassium persulfate=1:10, after stirring evenly, take iron nitrate, the mass ratio is aniline monomer: iron nitrate=1:7, add To the above mixed solution, the color of the solution turned black immediately, and stirred for 2 days under ice-bath conditions. Then, centrifuge and wash 3 times with deionized water. The obtained black polyaniline nanoparticles are dispersed in de...

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Abstract

The invention discloses a preparation method of electric-conductive macromolecule polymer nanoparticles with good water phase dispersibility. According to the method, an electric-conductive macromolecule monomer is dissolved in an organic solvent while a persulfate aqueous solution and a ferric salt are added to synergistically oxidize and polymerize the electric-conductive macromolecule monomer to obtain the electric-conductive macromolecule polymer nanoparticles. According to the present invention, the prepared electric-conductive macromolecule polymer nanoparticles can be uniformly and stably dispersed in an aqueous solution for a long time, and has excellent electrical conductivity.

Description

technical field [0001] The invention relates to a preparation method of conductive high molecular polymer nano particles, in particular to a preparation method of high molecular polymer nano particles with good water phase dispersibility and conductivity. Background technique [0002] Conductive polymers are widely used in many fields such as electronics, medicine, and biology. However, most conductive polymers, such as poly-3,4-ethylenedioxythiophene, polypyrrole, and polyaniline, have rigid conjugated chain structures, are generally insoluble and infusible, and are difficult to form and process, which is limited in practical applications. Most conductive composite materials need to disperse conductive polymer nanoparticles in various solvent phases and then process them. However, due to the large specific surface area and high surface energy of conductive polymer nanoparticles, particles are prone to coagulation and agglomeration. Make the particle size larger, so it is e...

Claims

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Application Information

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IPC IPC(8): C08J3/12C08L65/00C08L79/04C08L79/02
CPCC08J3/12C08J2365/00C08J2379/02C08J2379/04
Inventor 鲁雄黄自强甘东林闫力维王笑
Owner SOUTHWEST JIAOTONG UNIV
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