Preparation method of high-stretchability polyaniline-based flexible electrically conductive hydrogel

A polyaniline-based, flexible and conductive technology is used in the preparation of conductive functional polymer hydrogels and highly stretchable polyaniline-based flexible conductive hydrogels, which can solve problems such as inflexibility and restricting the use of flexible electronic devices. , to achieve the effect of promoting uniform distribution, excellent electrical conductivity and electrochemical performance, and improving electrochemical performance

Active Publication Date: 2019-08-23
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conductive polymers (such as polyaniline, polypyrrole, polythiophene, etc.) are usually composed of rigid molecular chains and are not flexible, which restricts their application in flexible electronic devices.

Method used

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  • Preparation method of high-stretchability polyaniline-based flexible electrically conductive hydrogel
  • Preparation method of high-stretchability polyaniline-based flexible electrically conductive hydrogel
  • Preparation method of high-stretchability polyaniline-based flexible electrically conductive hydrogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Dissolve 2.7g of NaOH solid in 20ml of deionized water, then slowly add 10g of acrylic acid in an ice-water bath to prepare a 50mol% neutralized acrylic acid aqueous solution; take 3ml of the above solution and mix it with 1g of acrylamide and 2ml of deionized water , stir until the solution is clear; then add 1ml 1wt% ammonium persulfate solution and 100μl 1wt% N,N'-methylenebisacrylamide solution in turn, stir until the solution is clear; pour the mixed solution into a plastic hose, seal it, ASH was prepared by reacting at 60°C for 4h.

[0028] (2) The ASH prepared in step (1) was swelled in a large amount of deionized water for 48 hours, then frozen at -18°C for 12 hours, and then thawed at room temperature for 4 hours to obtain a porous copolymer hydrogel.

[0029] (3) The porous copolymer hydrogel prepared in step (2) was placed in 30ml of 0.1mol / l aniline hydrochloride solution, stored in a vacuum environment for 3 hours, and then placed in a 0°C environment f...

Embodiment 2

[0039] (1) Dissolve 2.7g of NaOH solid in 20ml of deionized water, then slowly add 10g of acrylic acid in an ice-water bath to prepare a 50mol% neutralized acrylic acid aqueous solution; take 3ml of the above solution, mix with 1.3g of acrylamide and 2ml of deionized water Mix and stir until the solution is clear; then add 1ml 1wt% ammonium persulfate solution and 200μl 1wt% N,N'-methylenebisacrylamide solution in turn, stir until the solution is clear; pour the mixed solution into a plastic hose, seal , ASH was prepared by reacting at 60°C for 4h.

[0040] (2) The ASH prepared in step (1) was swelled in a large amount of deionized water for 48 hours, then frozen at -18°C for 12 hours, and then thawed at room temperature for 4 hours to obtain a porous copolymer hydrogel.

[0041] (3) The porous copolymer hydrogel prepared in step (2) was placed in 30ml of 0.1mol / l aniline hydrochloride solution, stored in a vacuum environment for 3 hours, and then placed in a 0°C environment f...

Embodiment 3

[0044] (1) Dissolve 2.7g of NaOH solid in 20ml of deionized water, then slowly add 10g of acrylic acid in an ice-water bath to prepare a 50mol% neutralized acrylic acid aqueous solution; take 3ml of the above solution and mix it with 1g of acrylamide and 2ml of deionized water , stir until the solution is clear; then add 1ml 1wt% ammonium persulfate solution and 300μl 1wt% N,N'-methylenebisacrylamide solution in turn, stir until the solution is clear; pour the mixed solution into a plastic hose, seal it, ASH was prepared by reacting at 60°C for 4h.

[0045] (2) The ASH prepared in step (1) was swelled in a large amount of deionized water for 48 hours, then frozen at -18°C for 12 hours, and then thawed at room temperature for 4 hours to obtain a porous copolymer hydrogel.

[0046] (3) The porous copolymer hydrogel prepared in step (2) was placed in 30ml of 0.2mol / l aniline hydrochloride solution, stored in a vacuum environment for 3 hours, and then placed in an environment of 0...

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Abstract

The invention belongs to the field of flexible electronic material, and more specifically relates to a preparation method of a high-stretchability polyaniline-based flexible electrically conductive hydrogel. The preparation method comprises following steps: firstly, acrylamide and acrylic acid at an appropriate neutralization degree are taken as monomers, ammonium persulfate and N, N'-methylene-bisacrylamide are added, and synthesis of poly(acrylamide-co-sodium acrylate)copolymer hydrogel (ASH) is carried out; then swelling-freeze thawing processing is adopted to prepare porous ASH, aniline monomer immersion is carried out, and in-situ polymerization is carried out to obtain a finished product. The flexible electrically conductive hydrogel preparation process is simple; operation is convenient; aniline permeability problem is solved without introducing any template into hydrogel medium; hydrogel pH responsiveness is capable of improving product electrochemical performance greatly; theobtained flexible electrically conductive hydrogel possesses excellent electric conductivity and electrochemical performance, and excellent stretchability, and can be widely used in manufacturing of wearable flexible electronic devices.

Description

technical field [0001] The invention belongs to the field of flexible electronic materials, relates to a conductive functional polymer hydrogel, and more particularly relates to a preparation method of a highly stretchable polyaniline-based flexible conductive hydrogel. Background technique [0002] With the development of new energy alternatives to traditional fossil fuels and the rise of wearable technology, the development of new and efficient flexible energy storage electronic devices has become a current research hotspot. Conductive materials often determine the performance of the entire electronic device. Commonly used conductive materials include conductive polymers, carbon materials, and metal oxides. Conductive polymers have the advantages of high electrical conductivity, good processability, and large capacitance, and have been widely used in the preparation of batteries, supercapacitors, and sensors. However, conductive polymers (such as polyaniline, polypyrrole,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08J9/28C08L79/02C08L33/02C08G73/02C08F220/06C08F220/56C08F222/38
CPCC08F220/06C08G73/0266C08J3/075C08J9/28C08J2333/02C08J2379/02C08J2433/02C08J2479/02C08F220/56C08F222/385
Inventor 李晓陈立樟张卫英董岳峰欧阳万军英晓光
Owner FUZHOU UNIV
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