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Electric polyaniline derivative surface modified water decentralized carbon nano-tube and preparation method

A technology of conductive polyaniline and aniline derivatives, applied in nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve problems such as low conductivity, achieve good water dispersibility, less environmental pollution, and simple preparation process

Inactive Publication Date: 2007-10-24
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a water-dispersible carbon nanotube with a surface modified conductive polyaniline derivative and a preparation method thereof, so as to overcome the defect of low electrical conductivity of the carbon nanotube prepared in the prior art and satisfy different application fields needs

Method used

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  • Electric polyaniline derivative surface modified water decentralized carbon nano-tube and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dissolve 1 g of anthranilic acid monomer in 1 mol / L hydrochloric acid aqueous solution, then add 1 g of multi-walled carbon nanotubes (with a diameter of 10-20 nm) into the above aqueous solution, and ultrasonically treat for 2 hours to make carbon The nanotubes are evenly dispersed; take 1.3g of ammonium persulfate, make 10mL solution with deionized water, control the molar ratio of anthranilic acid to ammonium persulfate to be 1:1, and then slowly add the ammonium persulfate aqueous solution to the above In the reaction system, react at 25° C. for 24 hours, filter, wash and dry to obtain water-dispersible carbon nanotubes with conductive polyanthranilic acid surface-modified. Through elemental analysis, it was determined that the content of polyanthranilic acid on the surface of the modified carbon nanotubes was 36.8wt%.

[0023] Figure 1 shows the infrared analysis results of polyanthranilic acid surface-modified carbon nanotubes, 1562cm -1 and 1082cm -1 The absorp...

Embodiment 2

[0027] 0.1g of anthranilic acid monomer is dissolved in 3mol / L hydrochloric acid aqueous solution, then 1g of multi-walled carbon nanotubes (its diameter is 10-20nm) is added in the above-mentioned aqueous solution, through ultrasonic treatment 1 hour, make Carbon nanotubes are uniformly dispersed; get 0.26g ammonium persulfate, make 5mL solution with deionized water, control the molar ratio of anthranilic acid and ammonium persulfate to be 1:2, then slowly add the ammonium persulfate aqueous solution to the In the above reaction system, react at 25° C. for 48 hours, filter, wash and dry to obtain water-dispersible carbon nanotubes surface-modified with conductive polyanthranilic acid. Through elemental analysis, it was determined that the content of polyanthranilic acid on the surface of the modified carbon nanotube was 4.2wt%.

[0028] Its conductivity was tested with a four-probe instrument to be 10.2 S / cm.

[0029] A sedimentation test was used to evaluate the water dispe...

Embodiment 3

[0031] Dissolve 5 g of anthranilic acid monomer in 2 mol / L hydrochloric acid aqueous solution, then add 1 g of multi-walled carbon nanotubes (with a diameter of 10-20 nm) into the above aqueous solution, and ultrasonically treat for 1 hour to make carbon The nanotubes are evenly dispersed; take 6.5g of ammonium persulfate, make 50mL solution with deionized water, control the molar ratio of anthranilic acid to ammonium persulfate to be 1:1, then slowly add the ammonium persulfate aqueous solution to the above In the reaction system, react at 25° C. for 24 hours, filter, wash and dry to obtain water-dispersible carbon nanotubes with conductive polyanthranilic acid surface-modified. Through elemental analysis, it was determined that the content of polyanthranilic acid on the surface of the modified carbon nanotube was 56.2wt%.

[0032] Its conductivity is 16.2S / cm measured with a four-probe instrument.

[0033] A sedimentation test was used to evaluate the water dispersion stabi...

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Abstract

The invention discloses a water dispersing carbon nanometer pipe and making method of modified conductive polyaniline derivant surface, which is characterized by the following: dissolving the water-soluble phenylamine derivant monomer into inorganic acid solution; adding carbon nanometer pipe to be dispersed evenly through ultrasound; oxidizing and polymerizing to coat the water-soluble conductive phenylamine derivant on the carbon nanometer pipe surface evenly acted by oxidizer through original position chemistry; obtaining the product with simple and feasible method, strong controllability as well as good water dispersion and superior conductivity; fitting for making high-strength, antistatic and microwave-adsorbing material as mass transmitting and transferring carrier for special functional nanometer element and different systems; displaying wide applying prospect in the material science, nanometer technique and life science.

Description

technical field [0001] The invention relates to a water-dispersible carbon nanotube and a preparation method thereof, in particular to a water-dispersible carbon nanotube with a surface-modified conductive polyaniline derivative and a preparation method thereof. Background technique [0002] Carbon nanotubes (CNTs for short) are hollow tubes formed by rolling graphene sheets formed by carbon atoms. According to the number of graphite sheets, carbon nanotubes are divided into single-wall nanotubes (Single-wall Nanotube, SWNTs) and multi-wall carbon nanotubes (Multi-wall Nanotube, MWNTs). [0003] Carbon nanotubes have a unique structure and unique performance. Its theoretical tensile strength is 100 times that of steel, and its density is only 1 / 6 of that of steel. It has high toughness, strong electrical conductivity, excellent field emission performance, and good Adsorption performance, called by scientists as the future "superfiber", has aroused great concern in the field...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82B3/00
Inventor 王庚超丁赟立施静蔚李星玮李春忠
Owner EAST CHINA UNIV OF SCI & TECH
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