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Polypyrrole/graphene nano composite and preparation method thereof

A nanocomposite material and graphene technology are applied in the field of preparation of polymer/graphite nanocomposite materials, polypyrrole/graphene conductive nanocomposite materials, and polypyrrole/graphene nanocomposite materials, which can solve the problem of poor mechanical ductility and difficulty. Processing and other problems, to achieve the effect of low cost, high production efficiency and good thermal stability

Inactive Publication Date: 2011-05-11
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, pure polypyrrole is insoluble in commonly used organic solvents, has poor mechanical ductility, and is difficult to process

Method used

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  • Polypyrrole/graphene nano composite and preparation method thereof
  • Polypyrrole/graphene nano composite and preparation method thereof
  • Polypyrrole/graphene nano composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of composite thermal material: Dissolve 0.5ml of steam-distilled pure pyrrole monomer in 3ml of absolute ethanol, add 0.005g of graphene and 1ml of polyethylene glycol-400 to it, and ultrasonically disperse at room temperature After 30min, transfer to an ice-water bath and stir for 2 hours. After the temperature stabilizes, add 3.4g FeCl 3 ·6H 2 O initiator and 0.4g of p-toluenesulfonic acid were first reacted in an ice-water bath for 2h, then ultrasonicated for 3h and then stirred at room temperature for 20 hours, the product was filtered, washed repeatedly with deionized water and ethanol, and vacuum-dried at 50°C for 24h. A polypyrrole / graphene nanocomposite material is obtained.

[0035] The conductivity of the polypyrrole / graphene nanocomposite is 1.99 S / cm.

Embodiment 2

[0037]Dissolve 0.5ml of steam-distilled pure pyrrole monomer in 3ml of absolute ethanol, add 0.01g of graphene and 1ml of polyethylene glycol-400, and ultrasonically disperse the system at room temperature for 30min, then transfer to ice Stir in a water bath for about 2 hours, add 3.8g FeCl after the temperature is stable 3 ·6H 2 O initiator and 0.4g of p-toluenesulfonic acid were first reacted in an ice-water bath for 2 hours, then ultrasonicated for 3 hours, then stirred at room temperature for 22 hours, the product was filtered, washed with deionized water and ethanol repeatedly, and vacuum-dried at 50°C for 24 hours. A polypyrrole / graphene nanocomposite material is obtained.

[0038] The electrical conductivity of the polypyrrole / graphene nanocomposite is 2.08 S / cm.

Embodiment 3

[0040] Dissolve 0.5ml of steam-distilled pure pyrrole monomer in 3ml of absolute ethanol, add 0.015g of graphene and 1ml of polyethylene glycol-400, and ultrasonically disperse the system at room temperature for 30min, then transfer to ice Stir in a water bath for 2 hours, add 4.1g FeCl after the temperature stabilizes 3 ·6H 2 O initiator and 0.4g of p-toluenesulfonic acid were first reacted in an ice-water bath for 2 hours, then ultrasonicated for 3 hours, then stirred at room temperature for 22 hours, the product was filtered, washed with deionized water and ethanol repeatedly, and vacuum-dried at 50°C for 24 hours. A polypyrrole / graphene nanocomposite material is obtained.

[0041] The conductivity of polypyrrole / graphene nanocomposite is 2.21S / cm.

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Abstract

The invention discloses a polypyrrole / graphene nano composite which belongs to the technical field of composites. In the invention, ethanol is taken as a medium, para-toluenesulfonic acid is taken as a surface active agent, polyethylene glycol-400 is taken as phase transfer catalyst, FeCl3*6H2O is taken as an evocating agent, and under ultrasound conditions, pyrrole monomers are polymerized in situ on graphene, so as to obtain the polypyrrole / graphene nano composite. In the composite of the invention, through analysis by electron microscopy, the pyrrole monomers are polymerized in situ and evenly cover the grapheme, and the graphene and the polypyrrole are tightly combined in a nano level; and thermogravimetric analysis and electric conductivity study show that the composite has better heat stability, electric conductivity and processability and can be used in the fields of sensors, electron devices and biomedicine.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a polymer / graphite nanocomposite material, in particular to a polypyrrole / graphene conductive nanocomposite material; the invention also relates to a preparation method of the polypyrrole / graphene nanocomposite material . Background technique [0002] Polypyrrole (Ppy), a conductive polymer material containing conjugated double bonds, has attracted increasing attention due to its good electrical conductivity, simple synthesis, and good environmental stability. It has been widely used in sensors, electronic devices, biological medicine and other fields. These properties of polypyrrole are closely related to its morphology and microstructure. Its morphology and microstructure are determined by synthesis methods, counter ions, and other factors. Usually, pure polypyrrole is insoluble in commonly used organic solvents, has poor mechanical ductility, and is difficult to p...

Claims

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Application Information

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IPC IPC(8): C08L79/04C08K3/04C08G73/06
Inventor 莫尊理高倩郭瑞斌刘鹏伟赵永霞冯超
Owner NORTHWEST NORMAL UNIVERSITY
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