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Composite material with high conductivity intercalation structure and preparation method thereof

A technology of high conductivity and composite materials, applied in the field of functional materials, can solve problems such as unfavorable dispersion effect and improved conductivity, and achieve the effect of low cost and simple operation

Active Publication Date: 2009-09-30
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the dispersion of graphite oxide in the composite has not been carefully studied. In-situ polymerization is easy to superimpose graphite oxide sheets, which is not conducive to its dispersion effect but affects the improvement of electrical conductivity.

Method used

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  • Composite material with high conductivity intercalation structure and preparation method thereof
  • Composite material with high conductivity intercalation structure and preparation method thereof
  • Composite material with high conductivity intercalation structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The polypyrrole / graphite oxide composite material with a high conductivity intercalation structure adopts the emulsion polymerization method, and the specific steps are as follows:

[0024] (1) 1mg·ml in 70ml graphite oxide aqueous solution -1 Add hydrochloric acid to adjust pH=1, add surfactant cetyltrimethylammonium bromide 70mg, treat under ultrasonic wave for 30min, form colloidal dispersion liquid.

[0025] (2) Add 0.07 g of pyrrole monomer to the colloidal dispersion in step (1), add dropwise oxidant ammonium persulfate aqueous solution 0.24 g / 5 ml under magnetic stirring, and perform emulsion polymerization at 0-5° C. for 10 h.

[0026] (3) Filter the black liquid obtained in step (2), wash with acetone and deionized water, and dry at 80° C. for 12 hours to obtain a polypyrrole / graphite oxide composite with high conductivity in an intercalation structure.

[0027] Using the four-probe method, the electrical conductivity of the polypyrrole / graphite oxide composit...

Embodiment 2

[0030] The polypyrrole / graphite oxide composite material with a high conductivity intercalation structure adopts the emulsion polymerization method, and the specific steps are as follows:

[0031] (1) 1mg·ml in 70ml graphite oxide aqueous solution -1 Add hydrochloric acid to adjust pH = 3, add emulsifier cetyltrimethylammonium bromide 350mg, treat under ultrasonic wave for 60min, and change to magnetic stirring after the system is fully dissolved.

[0032] (2) Add 0.35g of pyrrole monomer to the solution in step (1), control the reaction temperature at 0-5°C, and under the action of magnetic stirring, add 1.19g / 5ml of oxidant ammonium persulfate aqueous solution dropwise to start the reaction and continue Reaction 10h.

[0033] (3) Filter the black liquid obtained in step (2), wash with acetone and deionized water, and dry at 80° C. for 12 hours to obtain a highly conductive polypyrrole / graphite oxide composite with an intercalation structure.

[0034] A polypyrrole / graphite...

Embodiment 3

[0036] The polypyrrole / graphite oxide composite material with a high conductivity intercalation structure adopts the emulsion polymerization method, and the specific steps are as follows:

[0037](1) 70ml graphite oxide aqueous solution 2mg·ml -1 Add hydrochloric acid to adjust pH=1, add emulsifier cetyltrimethylammonium bromide 140mg, treat under ultrasonic wave for 30min, and change to magnetic stirring after the system is fully dissolved.

[0038] (2) Add 0.14g of pyrrole monomer to the solution in step (1), control the reaction temperature at 0-5°C, and under the action of magnetic stirring, add 0.48g / 5ml of oxidant ammonium persulfate aqueous solution dropwise to start the reaction and continue Reaction 10h.

[0039] (3) Filter the black liquid obtained in step (2), wash with acetone and deionized water, and dry at 80° C. for 12 hours to obtain a highly conductive polypyrrole / graphite oxide composite with an intercalation structure.

[0040] A polypyrrole / graphite oxide...

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Abstract

The invention discloses a composite material with a high conductivity intercalation structure and a preparation method thereof, namely a method for preparing a polypyrrole / graphite oxide composite material. The preparation method comprises the following steps: (1) firstly, dispersing the graphite oxide in a hydrochloric acid aqueous solution with pH of between 1 and 3, adding a surface active agent, namely hexadecyl trimethyl ammonium bromide into the mixed solution, carrying out ultrasonic treatment for 30 to 60 minutes at room temperature to obtain a colloidal dispersion solution; and (2) adding a pyrrole monomer into the colloidal dispersion solution of the step (1), under magnetic stirring, adding ammonium persulfate into the mixed solution, carrying out emulsion polymerization for 3 to 24 hours at a temperature of between 0 and 5 DEG C, filtering the product, washing the product by acetone and deionized water, and drying the product to obtain the polypyrrole / graphite oxide composite material with the high conductivity intercalation structure.

Description

technical field [0001] The invention relates to a composite material with a high conductivity intercalation structure and a preparation method thereof, more specifically relates to a polypyrrole / graphite oxide composite material, and belongs to the field of functional materials. Background technique [0002] The barrier effect of the two-dimensional confined space between the inorganic matter sheets in the conductive polymer / layered inorganic nanocomposite and the synergistic effect between the host and the guest make many properties better than the conventional composite materials with the same components, so as a This new type of functional composite material has broad application prospects in the fields of microelectronics, optics, electrochemistry and biotechnology. The hybrid materials of conductive polymer (PPY) and layered inorganic (GO) have attracted much attention in drug delivery, electronic materials and optoelectronic devices. The addition of conductive polymer ...

Claims

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Application Information

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IPC IPC(8): C08L79/04C08G73/06C08K9/00C08K3/04
Inventor 李春忠顾哲明王庚超张玲
Owner EAST CHINA UNIV OF SCI & TECH
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