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Poly(3, 4-ethylenedioxythiophene) composite material and preparation method and application thereof

A technology of ethylenedioxythiophene and composite materials, applied in applications, medical science, sensors, etc., can solve the problems of inapplicable preparation of flexible electrodes, difficulty in antifreeze, adhesion, plasticity, biocompatibility, etc.

Inactive Publication Date: 2019-09-06
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of dispersion is widely used in electronics, medicine, military, biology and other fields, but it is difficult to have the advantages of antifreeze, adhesion, plasticity, biocompatibility, etc., and is not suitable for the preparation of flexible electrodes.

Method used

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  • Poly(3, 4-ethylenedioxythiophene) composite material and preparation method and application thereof
  • Poly(3, 4-ethylenedioxythiophene) composite material and preparation method and application thereof
  • Poly(3, 4-ethylenedioxythiophene) composite material and preparation method and application thereof

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preparation example Construction

[0030] The present invention relates to a kind of poly(3,4-ethylenedioxythiophene) / sulfonated lignin as conductive material super sticky antifreeze poly(3,4-ethylenedioxythiophene) / sulfonated lignin / A method for preparing a three-dimensional network hydrogel commercial electrode of polyacrylic acid, the steps of the method are as follows:

[0031] Step 1. Dissolve xg sulfonated lignin in water (solid content of lignin is 1%-5%), add 3,4 ethylenedioxythiophene and stir at 500r / min for 15 minutes, then add ammonium persulfate, pass through N 2 Reaction 24h.

[0032] Step 2: Add 0.05g of ammonium persulfate to 6g of acrylic acid, stir evenly with ultrasonic, add 50-1000ul poly(3,4-ethylenedioxythiophene) / sulfonated lignin dispersion obtained in step 1, add 10-30ml Water, after stirring, sonicate for 10-30min, then add 0.02g N, N methylenebisacrylamide, stir, sonicate for 10min, then heat in a water bath at 50°C for 2h to obtain a gel;

[0033] Step 3, take the gel obtained in ...

Embodiment 1

[0036] Step 1. Dissolve 1g of sulfonated lignin in 40.17ml of deionized water, add 0.50g of 3,4 ethylenedioxythiophene, stir at 500r / min for 20 minutes, add 1.003g of ammonium persulfate, and pass through N at room temperature 2 Reaction 24h.

[0037] Step 2: Add 0.05 g of ammonium persulfate to 6 g of acrylic acid, stir evenly with ultrasonic, add 100 ul of the poly(3,4-ethylenedioxythiophene) / sulfonated lignin dispersion obtained in Step 1, add 15 ml of water, and stir , sonicate for 10 minutes, then add 0.02g N, N methylenebisacrylamide and stir, then sonicate for 10 minutes, then heat in a water bath at 50°C for 2 hours to obtain a gel;

[0038] Step 3: Take the gel obtained in Step 2, soak it in glycerin for 2.5 hours, and take it out to obtain a three-dimensional network hydrogel of poly(3,4-ethylenedioxythiophene) / sulfonated lignin / polyacrylic acid.

Embodiment 2

[0040] Step 1. Dissolve xg sulfonated lignin in water (solid content of lignin is 2.0%), add 3,4 ethylenedioxythiophene and stir at 500r / min for 10 minutes, then add ammonium persulfate, pass N 2 Reaction 24h.

[0041] Step 2: Add 0.05g of ammonium persulfate to 6g of acrylic acid, stir evenly by ultrasonic, add 500ul of poly(3,4-ethylenedioxythiophene) / sulfonated lignin dispersion obtained in Step 1, add 25ml of water, and stir , sonicate for 10 minutes, then add 0.02g N, N methylenebisacrylamide and stir, then sonicate for 10 minutes, then heat in a water bath at 50°C for 2 hours to obtain a gel;

[0042] Step 3: Take the gel obtained in Step 2, soak it in glycerin for 3 hours, and take it out to obtain a three-dimensional network hydrogel of poly(3,4-ethylenedioxythiophene) / sulfonated lignin / polyacrylic acid.

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Abstract

The invention relates to an electrical conductive composite material, in particular to a poly(3, 4-ethylenedioxythiophene) composite material and a preparation method and application thereof. The preparation method comprises the steps that sulfonated lignin and a 3, 4-ethylenedithiathiophene monomer are dissolved into water to be reacted with ammonium persulfate in a nitrogen atmosphere, and a poly(3, 4-ethylenedioxythiophene) / sulfonated lignin dispersion liquid is prepared; ammonium persulfate is added into crylic acid to be uniformly stirred, the poly(3, 4-ethylenedioxythiophene) / sulfonatedlignin dispersion liquid is added, after uniform dispersion, the mixture is heated in a water bath until gel is completely formed, the gel is put into glycerinum for soaking, and the obtained poly(3,4-ethylenedioxythiophene) composite material is taken out. According to the product, the composite material has the advantages of freezing resistance, adhesion, plasticity, biocompatibility and the like, and the composite material can be used for preparing a flexible electrode and used for detecting electrocardiogram, electromyogram and the like.

Description

[0001] 【Technical field】 [0002] The invention relates to a conductive composite material, in particular to a poly(3,4-ethylenedioxythiophene) composite material and its preparation method and application. [0003] 【Background technique】 [0004] In recent years, research on conductive hydrogels with strain sensing functions has been very popular, and hydrogel sensors that convert mechanical deformation into electrical signals have been flourishing in commercial electrodes, human motion detection, health monitoring, and human-computer interaction. Flexible electrodes need to have mechanical adaptability, that is, mild plastic deformation, to fully match bending, pulling, compression and dynamic surfaces, and to adhere to the skin to achieve its easy-to-wear characteristics. At the same time, as an electronic skin, it must have antifreeze, It has the advantages of non-toxicity, biocompatibility and biodegradability. [0005] Sulfonated lignin is lignin sulfonic acid, as a disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J3/075C08L33/02C08L97/00C08L65/00C08K5/053A61B5/04
CPCA61B5/6801A61B5/24C08J3/075C08J7/12C08J2333/02C08J2465/00C08J2497/00C08K5/053
Inventor 曹石林王勤华林嫦妹马晓娟黄六莲陈礼辉
Owner FUJIAN AGRI & FORESTRY UNIV
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