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Graphene/conductive polymer composite film and preparation method thereof

A conductive polymer and graphene technology, which is applied in the direction of non-metallic conductors, organic material conductors, carbon-silicon compound conductors, etc., can solve the problems of limited applications, achieve great convenience, simple preparation method conditions, and good electrical conductivity.

Active Publication Date: 2010-08-11
武汉工大科技园发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conductive polymers are generally insoluble and infusible, which limits their applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Prepare graphite oxide according to the method reported in the literature (Composites Science and Technology, 2009, 69, 1231);

[0030] 2) in the dilute hydrochloric acid solution containing 1mmol of aniline, adding the ammonium persulfate of 1mmol is an oxidant to prepare polyaniline;

[0031] 3) The graphite oxide and polyaniline obtained in steps 1) and 2) were ultrasonically dispersed in N-methylpyrrolidone for 60 minutes according to a mass ratio of 10:90, 0.2g of hydrazine hydrate was added thereto, and stirred for 24 hours;

[0032] 4) Add the above solution dropwise to the substrate rotating at 3000 rpm, spin coating for 30 seconds, wash and dry;

[0033] 5) Repeat step 4) and cycle 100 times to obtain a graphene / polyaniline composite film with a film thickness of about 1 μm and an electrical conductivity of 2×10 -2 S / cm.

Embodiment 2

[0035] 1) Prepare graphite oxide according to the method reported in the literature (Composites Science and Technology, 2009, 69, 1231);

[0036] 2) in the dilute sulfuric acid solution containing 2mmol o-methoxyaniline, adding the ammonium persulfate of 2mmol is an oxidant to prepare poly-o-methoxyaniline;

[0037] 3) The graphite oxide and poly-o-methoxyaniline obtained in steps 1) and 2) were ultrasonically dispersed in N-methylpyrrolidone for 60 minutes according to a mass ratio of 30:70, 0.4 g of hydrazine was added thereto, and stirred for 36 hours ;

[0038] 4) Immerse the substrate in the above solution, pull out after 5 seconds, wash and dry;

[0039] 5) Step 4) is repeated, and the graphene / poly-o-methoxyaniline composite film is obtained after 5 cycles, the film thickness is about 100 μm, and the conductivity of the composite film is 4×10 -1 S / cm.

Embodiment 3

[0041] 1) Prepare graphite oxide according to the method reported in the literature (Composites Science and Technology, 2009, 69, 1231);

[0042] 2) in the dilute acetic acid solution containing 5mmol 2,5-dimethoxyaniline, adding 5mmol of ammonium persulfate is an oxidant to prepare poly-2,5-dimethoxyaniline;

[0043] 3) The graphite oxide and poly-2,5-dimethoxyaniline obtained in steps 1) and 2) were ultrasonically dispersed in N-methylpyrrolidone for 90 minutes in a mass ratio of 50:50, and 0.2 g of dimethoxyaniline was added thereto. Methylhydrazine, stirred for 48 hours;

[0044] 4) Add the above solution dropwise to the substrate rotating at 3000 rpm, spin coating for 30 seconds, wash and dry;

[0045] 5) Repeat step 4) and cycle 500 times to obtain a graphene / poly-2,5-dimethoxyaniline composite film, the film thickness is about 6 μm, and the conductivity of the composite film is 7×10 1 S / cm.

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Abstract

The invention relates to a graphene / conductive polymer composite film and a preparation method thereof. The graphene / conductive polymer composite film comprises products prepared by the following reaction: 1) preparing graphite oxide from graphite by a chemical oxidation method; 2) adding an oxidant ammonium persulfate into monomer containing acid solution to prepare conductive polymer; 3) performing ultrasonic dispersion on the graphite oxide and the conductive polymer in N-methylpyrrolidone, adding a reducing agent, and stirring; 4) coating solution prepared by step 3) on the surface of a substrate to form a film, washing and drying; and 5) repeating the step 4) until the film has the required thickness. The graphene / conductive polymer composite film and the preparation method have the advantages that: 1) the formed graphene / conductive polymer composite film has good electric conduction and antistatic property, and has the conductivity between 1*10<-3> and 1*10<2>S / cm; 2) the conjugated structure of the grapheme and the conductive polymer ensures that the grapheme and the conductive polymer have high compatibility; 3) the composite film has controllable thickness; and 4) the preparation method has simple conditions and easy operation.

Description

technical field [0001] The invention relates to the preparation of composite membrane materials, in particular to a graphene / conductive polymer composite membrane and a preparation method thereof. Background technique [0002] Graphene is a new type of two-dimensional nanocarbon material consisting of a layer of carbon atoms discovered in 2004. It is currently the thinnest two-dimensional material in the world. The basic unit of one-dimensional carbon nanotubes, three-dimensional graphite). The study found that graphene has excellent electrical properties, and its room temperature electron mobility reaches 10,000 cm 2 / Vs; has excellent mechanical properties, its tensile strength and Young's modulus are 130GPa and 1TPa respectively; its thermal conductivity can reach 5000W / mK. This new material is expected to set off a new revolution in the fields of microelectronics, mechanics and medicine. Using natural graphite as raw material, the mass production of graphene is realiz...

Claims

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Application Information

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IPC IPC(8): C08L79/02C08K3/04C08G73/02C08J5/18H01B1/12H01B1/04
Inventor 李亮潘杰魏玉研鄢国平喻湘华
Owner 武汉工大科技园发展有限公司
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