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Spherical polyelectrolyte brush loaded organic conductive composite micro-nano particle and preparation method thereof

A technology of polyelectrolyte brush and conductive polymer is applied in the field of spherical polyelectrolyte brush-loaded organic conductive composite micro-nano particles and their preparation, which can solve the problems of monomer copolymerization template report and other problems, and achieve good conductivity and controllable particle size. , the effect of high conductivity

Inactive Publication Date: 2015-03-25
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A small amount of research has been achieved in this area, but there are no literature reports on it as a template for the copolymerization of two monomers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 80 mg (5% of the sum of the mass of the two monomers) of spherical polyelectrolyte brush (ASPB, core particle size: 100 nm, brush weight average molecular weight: 2000 g / mol, see Express Polymer Letters Vol. 6 for the synthesis method (2012) pp 680-686) ultrasonically dispersed in 18.9 mL of hydrochloric acid aqueous solution with a concentration of 2 mol / L, after 20 minutes, add aniline (0.9 mL) and pyrrole (0.7 mL) monomers in the same amount, and magnetically stir . The reaction system was placed in an environment of 0 ℃, and after 20 minutes of nitrogen protection, 2.28 g of ammonium persulfate (50% of the sum of the amounts of the two monomer substances) was added, and the system gradually turned black. After the reaction continued for 6 hours, the product was separated by suction filtration, and the filter cake was washed with 2 mol / L aqueous hydrochloric acid and alcohol-water mixture (V 醇 / V 水 =3) Wash 3 times until the filtrate is colorless. The resulting fi...

Embodiment 2

[0032] 160 mg (10% of the sum of the mass of the two monomers) of ASPB (nuclear particle size: 50 nm, brush weight average molecular weight: 500 g / mol) was ultrasonically dispersed in 18.9 mL, 2 mol / L hydrochloric acid aqueous solution, After 20 minutes, add aniline (0.9 mL) and pyrrole (0.7 mL) monomers in an equal amount, and stir magnetically. The reaction system was placed in an environment of 30 ° C, protected by nitrogen for 20 minutes, and 1.82 g of ammonium persulfate (40% of the sum of the amounts of the two monomer substances) was added, and the system gradually turned black. After the reaction continued for 2 hours, the product was separated by suction filtration, and the filter cake was washed with 2 mol / L aqueous hydrochloric acid and alcohol-water mixture (V 醇 / V 水 =4) Wash until the filtrate is colorless. The resulting filter cake was vacuum-dried at 50° C. for 24 hours, and then ground to obtain aniline-pyrrole copolymer conductive polymer powder supported by...

Embodiment 3

[0034] 240 mg (15% of the sum of the mass of the two monomers) of ASPB (nuclear particle size: 150 nm, brush weight average molecular weight: 1000 g / mol) was ultrasonically dispersed in 18.9 mL, 2 mol / L hydrochloric acid aqueous solution, After 20 minutes, add aniline (0.9 mL) and pyrrole (0.7 mL) monomers in an equal amount, and stir magnetically. The reaction system was placed in an environment of 5 °C, protected by argon for 20 minutes, and 1.37 g of ammonium persulfate (30% of the sum of the amounts of the two monomer substances) was added, and the system gradually turned black. After the reaction continued for 8 hours, the product was separated by suction filtration, and the filter cake was washed with 2 mol / L aqueous hydrochloric acid and alcohol-water mixture (V 醇 / V 水 =5) Wash repeatedly until the filtrate is colorless. The resulting filter cake was vacuum-dried at 50° C. for 24 hours, and then ground to obtain aniline-pyrrole copolymer conductive polymer powder supp...

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Abstract

The invention relates to a spherical polyelectrolyte brush loaded organic conductive composite micro-nano particle and a preparation method thereof. The composite micro-nano particle is composited by a spherical polyelectrolyte brush and an aniline-pyrrole copolymerization conductive polymer. The preparation method comprises the steps of introducing the nano-spherical polyelectrolyte brush into a composite polymeric system, and obtaining the spherical polyelectrolyte brush loaded organic conductive composite micro-nano particle by an in-situ chemical oxidative polymerization method. The preparation method is simple and convenient in operational course; the prepared spherical polyelectrolyte brush loaded organic conductive composite micro-nano particle has the characteristics of high conductivity, controllable particle size and good processing property; the conductive composite micro-nano material with the excellent conductivity can be obtained by controlling a molecular structure of the added spherical polyelectrolyte brush and polymerization reaction condition parameters; and the operational course is simple and convenient.

Description

technical field [0001] The invention relates to the field of nanocomposite materials, in particular to a spherical polyelectrolyte brush-loaded organic conductive composite micro-nano particle and a preparation method thereof. Background technique [0002] Since the discovery of conductive polymers by American scientists Heeger, MacDiarmid and Japanese scientist Shirakawa in 1977, due to their excellent physical and chemical properties, conductive polymers have great application value in the fields of national economy and industrial production. Compared with a large number of reports on conductive polymer polypyrrole and polyaniline, the research on aniline-pyrrole copolymer system is very insufficient. Since the copolymer can overcome the shortcoming of single π-electron in the single homopolymerization system and obtain composite materials with better properties, the research on the aniline-pyrrole copolymerization system has gradually attracted people's attention. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/02C08L79/04C08L51/10C08G73/02C08G73/06
Inventor 黎厚斌苏娜黄瑜张雄志刘兴海
Owner WUHAN UNIV
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