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Method of preparing polythiophene or derivative thereof-multiwall carbon nano-tube composite material

A technology for multi-walled carbon nanotubes and composite materials, which is applied in the field of preparing conductive polymer-carbon nanotube composite materials, can solve the problems of insolubility of composite materials, and the agglomeration of carbon nanotubes is not easy to disperse, and achieves the effect of preventing agglomeration.

Inactive Publication Date: 2007-03-07
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that carbon nanotubes are a nanomaterial with broad application prospects, but the problem that carbon nanotubes are easy to agglomerate and not easy to disperse has always limited its application, and most conductive polymers- The problem of insolubility of carbon nanotube composites

Method used

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  • Method of preparing polythiophene or derivative thereof-multiwall carbon nano-tube composite material
  • Method of preparing polythiophene or derivative thereof-multiwall carbon nano-tube composite material
  • Method of preparing polythiophene or derivative thereof-multiwall carbon nano-tube composite material

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Effect test

Embodiment 1

[0028] Preparation steps of polythiophene-multi-walled carbon nanotube composites:

[0029] Step 1, processing multi-walled carbon nanotubes:

[0030] (1) At 80°C, 1.5g of multi-walled carbon nanotubes were mixed with 90ml of 63% HNO 3 Heat under reflux for 4 hours, filter with suction, and repeatedly wash with distilled water until the filtrate becomes colorless;

[0031] (2) adding the multi-walled carbon nanotubes treated in step (1) to a mixed solution of 20 ml distilled water, 100 ml n-heptane and 10 g oleic acid, ultrasonically dispersing and mixing evenly, adding 10 ml 98% sulfuric acid, and adding 10 ml of 98% sulfuric acid at 80° C. , and continue to heat under reflux for 1 hour.

[0032] (3) The mixture of step (2) is liquid-separated, the water phase is removed, and the oil phase is repeatedly washed with distilled water until the water phase becomes colorless, that is, the water phase no longer contains multi-walled carbon nanotubes and detects no SO. 4 2+ unti...

Embodiment 2

[0041] The preparation steps of poly(3-thiophene methyl acetate)-multi-walled carbon nanotube composite material:

[0042] The monomer used is 3-thiophene methyl acetate, and its structural formula is as follows:

[0043]

[0044] The amount of initiator anhydrous ferric chloride is 4.12g; others are the same as in Example 1.

[0045] After analysis, the multi-walled carbon nanotubes were coated with poly(3-thiophene methyl acetate) to form a core-shell nanowire structure with the multi-walled carbon nanotubes as the core and the polymer as the shell. The product is insoluble in methanol and water, but soluble in chloroform, benzene and toluene.

Embodiment 3

[0047] Preparation steps of poly(3-methoxythiophene)-multi-walled carbon nanotube composites:

[0048] The monomer used is 3-methoxythiophene, and its structural formula is as follows:

[0049]

[0050] The amount of initiator anhydrous ferric chloride is 5.70g; others are the same as in Example 1.

[0051] After analysis, the multi-walled carbon nanotubes were coated with poly(3-methoxythiophene) to form a core-shell nanowire structure with the multi-walled carbon nanotubes as the core and the polymer as the shell. The product is soluble in dimethyl disulfone.

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Abstract

The invention discloses a preparing method of conductive composite material of polythiofuran or derivant-multiwall carbon nanometer pipe, which comprises the following steps: disposing the surface of multiwall carbon nanometer pipe; dispersing in the chloroform; adsorbing monomer on the multiwall carbon nanometer pipe; adding initiator to polymerize; obtaining the product; changing the kind of substituted base of thiofuran ring to adjust the solubility.

Description

Field of Invention [0001] The invention relates to a method for preparing a conductive polymer-carbon nanotube composite material. Background technique [0002] Conductive polymers have promising development prospects due to their low density, structural diversity, molecular design, tunable electromagnetic parameters, and unique physical and chemical properties, and have attracted extensive attention from the scientific community. , nonlinear optical devices, semiconductor devices, electrochromic devices, sensors, stealth materials and electromagnetic shielding have broad application prospects. [0003] Among many conductive polymer materials, polythiophene has become a research hotspot in the field of conductive polymers due to its easy polymerization, good thermal stability, excellent physical and chemical properties, good electrochemical properties and environmental stability. Like other conductive polymers, the conductivity of polythiophene varies greatly depending on t...

Claims

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Application Information

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IPC IPC(8): C08L65/00C08K3/04C08G61/12
Inventor 朱红郭洪范
Owner BEIJING JIAOTONG UNIV
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