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Conductive polymer aerogel and preparation method thereof

A conductive polymer and airgel technology, applied in the field of conductive polymer airgel material and its preparation, can solve the problems of difficult preparation of conductive polymer hydrogel, poor mechanical properties of airgel, etc., and achieve easy control And industrial production, excellent physical and mechanical properties and electrical conductivity, low price effect

Inactive Publication Date: 2015-12-23
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the poor solubility of conductive polymers, the preparation of conductive polymer hydrogels is relatively difficult, resulting in few reports on conductive polymer aerogels.
Zhang et al first synthesized a conductive polymer airgel composed of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonic acid) in 2010 (J.Mater.Chem.,2010,20 ,5080–5085), and applied to supercapacitor electrode materials, but the airgel has poor mechanical properties and low specific capacitance
At present, there are few reports on polymer conductive airgel materials with low cost and excellent mechanical properties.

Method used

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  • Conductive polymer aerogel and preparation method thereof
  • Conductive polymer aerogel and preparation method thereof

Examples

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Embodiment 1

[0032] A preparation method of conductive polymer airgel, comprising the following steps:

[0033] Step 1. Add 4g of low-ester pectin into 100mL of deionized water, stir at 800r / min for 10min to dissolve, then add 6g of aniline at 0°C, and continue stirring for 3h to dissolve to obtain a mixed solution;

[0034] Step 2. Add 3 g of ammonium persulfate to the mixed solution in Step 1 at 0°C, and stir at 800 r / min until the color of the solution turns black; then keep the temperature unchanged for 24 hours to obtain a hydrogel;

[0035] Step 3, add the obtained hydrogel into a container with fresh deionized water for soaking and washing, and replace fresh deionized water every day for 5 days; the impurity in the hydrogel is removed during the soaking and washing process, so that only polyaniline and low-ester pectin;

[0036] Step 4, adding the soaked and washed hydrogel into a container filled with fresh ethanol for solvent exchange, replacing fresh ethanol every day for 7 days...

Embodiment 2

[0040] A preparation method of conductive polymer airgel, comprising the following steps:

[0041] Step 1. Add 4g of low-ester pectin into 96mL of deionized water, stir at 1000r / min for 30min to dissolve, then add 4g of aniline at 4°C, continue stirring for 3h to dissolve, and obtain a mixed solution;

[0042]Step 2. Add 2 g of ammonium persulfate to the mixed solution in Step 1 at 4°C, and stir at 1000 r / min until the color of the solution turns black; then keep the temperature unchanged for 24 hours to obtain a hydrogel;

[0043] Step 3, add the obtained hydrogel into a container with fresh deionized water for soaking and washing, and replace fresh deionized water every day for 5 days; the impurity in the hydrogel is removed during the soaking and washing process, so that only polyaniline and low-ester pectin;

[0044] Step 4, adding the soaked and washed hydrogel into a container filled with fresh ethanol for solvent exchange, replacing fresh ethanol every day for 7 days; ...

Embodiment 3

[0048] A preparation method of conductive polymer airgel, comprising the following steps:

[0049] Step 1. Add 4g of low-ester pectin into 96mL of deionized water, stir at 800r / min for 30min to dissolve, then add 1.7g of aniline at 2°C, and continue stirring for 3h to dissolve to obtain a mixed solution;

[0050] Step 2. Add 0.85 g of ammonium persulfate to the mixed solution in Step 1 at 2°C, and stir at 800 r / min until the color of the solution turns black; then keep the temperature unchanged for 24 hours to obtain a hydrogel;

[0051] Step 3, add the obtained hydrogel into a container with fresh deionized water for soaking and washing, and replace fresh deionized water every day for 5 days; the impurity in the hydrogel is removed during the soaking and washing process, so that only polyaniline and low-ester pectin;

[0052] Step 4. Quickly freeze the soaked and washed hydrogel at -196°C until the ice crystals grow completely, and freeze at room temperature until completely...

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Abstract

The invention discloses a conductive polymer aerogel and a preparation method thereof. The preparation method comprises the following steps: polymerizing polyaniline in a low-ester pectin water solution, and then inducing to form an aquagel, carrying out solvent washing, and carrying out freeze-drying or supercritical drying. The aerogel is prepared by performing hydrogen bond crosslinking on 20-80 wt% of polyaniline and the balance of low-ester pectin with excellent mechanical properties. The method has the advantages of abundant raw material sources and low price. The obtained aerogel has the advantages of excellent mechanical properties, high conductivity, low density, high specific area and the like, and has favorable application prospects in the fields of energy storage materials, intelligent response, data storage and the like.

Description

technical field [0001] The invention belongs to the technical field of airgel material preparation, and in particular relates to a conductive polymer airgel material and a preparation method thereof. Background technique [0002] Airgel is a star material that has emerged in recent years. It is prepared by replacing the liquid in the gel with gas, and the gel network structure remains basically unchanged. Due to the very high porosity of the material itself, high specific surface area, low apparent strength, density and refractive index, airgel materials are used in strong laser research target materials, heat insulation materials, energy storage materials, catalytic materials, adsorption materials, etc. Materials, Cerenkov threshold detectors and other fields have shown excellent application prospects. [0003] Among many airgel materials, conductive aerogels have both electrical conductivity and the excellent properties of aerogels (low density, high specific surface area...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08L79/02C08L5/06C08J3/24C08J3/075
Inventor 赵海波朱家艺袁磊付志兵王朝阳杨曦米睿瞿静钟铭龙张厚琼
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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