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Preparation method for polyaniline-based self-repairing conductive hydrogel

A conductive hydrogel, polyaniline-based technology, which is applied in the preparation of self-healing conductive hydrogels and the preparation of polyaniline-based self-healing conductive hydrogels, can solve problems such as the influence of energy storage capacity, and achieve improved conductivity. , Excellent self-healing performance, the effect of improving self-healing performance

Inactive Publication Date: 2017-06-20
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the supercapacitor is damaged, its energy storage capacity will be greatly affected.

Method used

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  • Preparation method for polyaniline-based self-repairing conductive hydrogel
  • Preparation method for polyaniline-based self-repairing conductive hydrogel

Examples

Experimental program
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Effect test

Embodiment example 1

[0022] Step 1: Dissolve 10g of sodium borate and 8g of sodium bicarbonate in 100mL of deionized water as the reaction medium (to protect the o-dihydroxyl group). Both sodium borate and sodium bicarbonate are saturated aqueous solutions, some of which are separated out, and bubbled with nitrogen for 20 minutes After removing air from the solution, 5 g of dopamine hydrochloride was added to the solution. Dissolve 4.7mL of methacrylic anhydride in 25mL of THF and add dropwise to the above solution. In order to keep the mixed solution properly alkaline, add 2M NaOH solution dropwise to adjust the pH of the solution to 8 or above, and stir the mixed solution for 14h under nitrogen atmosphere . The mixture was washed twice with 50 mL of ethyl acetate, the pH of the centrifuged aqueous solution was adjusted to below 2 with 6M HCl solution, and extracted three times with ethyl acetate. Then dry the obtained ethyl acetate layer solution with anhydrous magnesium sulfate, rotary evapora...

Embodiment example 2

[0026] Step 1: Dissolve 10g of sodium borate and 8g of sodium bicarbonate in 100mL of deionized water as the reaction medium (to protect the o-dihydroxyl group). Both sodium borate and sodium bicarbonate are saturated aqueous solutions, some of which are separated out, and bubbled with nitrogen for 20 minutes After removing air from the solution, 6.25 g of dopamine hydrochloride was added to the solution. Dissolve 4.7mL of methacrylic anhydride in 25mL of THF and add dropwise to the above solution. In order to keep the mixed solution properly alkaline, add 2M NaOH solution dropwise to adjust the pH of the solution to 8 or above, and stir the mixed solution for 14h under nitrogen atmosphere . The mixture was washed twice with 50 mL of ethyl acetate, the pH of the centrifuged aqueous solution was adjusted to below 2 with 6M HCl solution, and extracted three times with ethyl acetate. Then dry the obtained ethyl acetate layer solution with anhydrous magnesium sulfate, rotary evap...

Embodiment example 3

[0030]Step 1: Dissolve 10g of sodium borate and 8g of sodium bicarbonate in 100mL of deionized water as the reaction medium (to protect the o-dihydroxyl group). Both sodium borate and sodium bicarbonate are saturated aqueous solutions, some of which are separated out, and bubbled with nitrogen for 20 minutes After removing air from the solution, 5 g of dopamine hydrochloride was added to the solution. 4.7mL methacrylic anhydride was dissolved in 25mLTHF and added dropwise to the above solution. In order to keep the mixed solution properly alkaline, 2M NaOH solution was added dropwise to adjust the pH of the solution to 8 or above, and the mixed solution was stirred for 14h under nitrogen atmosphere. The mixture was washed twice with 50 mL of ethyl acetate, the pH of the centrifuged aqueous solution was adjusted to below 2 with 6M HCl solution, and extracted three times with ethyl acetate. Then dry the obtained ethyl acetate layer solution with anhydrous magnesium sulfate, rota...

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Abstract

The invention discloses a preparation method for polyaniline-based self-repairing conductive hydrogel and belongs to the technical field of a high polymer material. The method is characterized in that polyaniline is used as a conductive high polymer material, and polymethylacrylamide is modified by a functional group dopamine and is endowed with a self-repairing property. The method comprises the following steps: firstly, modifying methacrylamide (DMA) with functional monomer dopamine, and performing photopolymerization, thereby preparing a series of hydrogel in different DMA contents; and adding aniline for performing in situ polymerization, thereby obtaining the self-repairing conductive hydrogel. The polyaniline hydrogel provided by the invention has a better self-repairing property and conductivity, and the property can be controlled by regulating the DMA content. The self-repairing conductive hydrogel prepared according to the invention is expected to be applied to a flexible super-capacitor with a self-repairing property.

Description

technical field [0001] The invention relates to a preparation method of a self-repairing conductive hydrogel, in particular to a preparation method of a polyaniline-based self-repairing conductive hydrogel, and belongs to the field of polymer materials. Background technique [0002] With the continuous improvement of industrial development level, the discharge of petroleum and other chemical fuels has caused serious damage to the environment on which human beings live. In order to solve the problems of environmental pollution and energy shortage at the same time, there is an urgent need for a green and sustainable energy source, and it is also urgent to find a device with a strong energy storage capacity. Supercapacitors have attracted extensive attention as a powerful energy storage device. Once the supercapacitor is damaged, its energy storage capacity will be greatly affected. Therefore, while developing supercapacitors, supercapacitors with self-healing ability also ha...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08L79/02C08L51/00C08G73/02C08F265/10C08F220/60C08F222/38
CPCC08F265/10C08G73/0266C08J3/075C08J2379/02C08J2451/00C08K5/521C08K2201/001C08F220/603
Inventor 李雅瑜叶瑾石畅施冬健孔思予章朱迎陈明清
Owner JIANGNAN UNIV
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