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Preparation method of bionic hydrophobic association conductive hydrogel with high resilience and high sensitivity

A conductive hydrogel, high-sensitivity technology, applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of slow response, low sensitivity, poor resilience, etc., to achieve high resilience, high sensitivity, The effect of excellent mechanical properties

Active Publication Date: 2021-06-04
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of poor resilience, obvious hysteresis, slow response speed and low sensitivity of existing conductive hydrogel materials, and to provide a biomimetic hydrophobic association conductive hydrogel with high resilience and high sensitivity Preparation

Method used

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  • Preparation method of bionic hydrophobic association conductive hydrogel with high resilience and high sensitivity
  • Preparation method of bionic hydrophobic association conductive hydrogel with high resilience and high sensitivity
  • Preparation method of bionic hydrophobic association conductive hydrogel with high resilience and high sensitivity

Examples

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Embodiment 1

[0032] A method for preparing a biomimetic hydrophobic association conductive hydrogel with high resilience and high sensitivity, the steps are as follows:

[0033] Step 1) preparation of nucleobase monomer (BA-A)

[0034] Step 1.1) Take 2g of adenine (A), 0.12g of 2,6-di-tert-butyl-p-cresol (BHT) and 0.08g of potassium carbonate (K 2 CO 3 ) into a single-necked flask, add 20ml dimethyl sulfoxide (DMSO), raise the temperature to 50°C, and stir for 1h to make it completely dissolved.

[0035] Step 1.2) Add 4ml of 1,4-butanediol diacrylate to the above solution and react at 50°C for 4h until the solution becomes clear.

[0036] Step 1.3) After the reaction, put into 200ml deionized water for precipitation, extract with 100ml n-hexane, remove the organic phase, extract with 50ml dichloromethane, remove the water phase, dry over anhydrous magnesium sulfate, rotary evaporate, and dry to obtain Double bonded nucleobase monomer (BA-A).

[0037] Step 2) Preparation of biomimetic h...

Embodiment 2

[0042] A method for preparing a biomimetic hydrophobic association conductive hydrogel with high resilience and high sensitivity, the steps are as follows:

[0043] Step 1) preparation of nucleobase monomer (BA-A)

[0044] Step 1.1) Take 2g of adenine (A), 0.12g of 2,6-di-tert-butyl-p-cresol (BHT) and 0.08g of potassium carbonate (K 2 CO 3 ) into a single-necked flask, add 30ml dimethyl sulfoxide (DMSO), raise the temperature to 50°C, and stir for 2h to make it dissolve completely.

[0045] Step 1.2) Add 5ml of 1,4-butanediol diacrylate to the above solution and react at 50°C for 5h until the solution becomes clear.

[0046] Step 1.3) After the reaction, put into 300ml deionized water for precipitation, extract with 120ml n-hexane, remove the organic phase, extract with 60ml dichloromethane, remove the water phase, dry over anhydrous magnesium sulfate, rotary evaporate, and dry to obtain Double bonded nucleobase monomer (BA-A).

[0047] Step 2) Preparation of biomimetic hy...

Embodiment 3

[0052] A method for preparing a biomimetic hydrophobic association conductive hydrogel with high resilience and high sensitivity, the steps are as follows:

[0053] Step 1) preparation of nucleobase monomer (BA-A)

[0054] Step 1.1) Take 2g adenine (A), 0.12g 2,6-di-tert-butyl-p-cresol (BHT), and 0.08g potassium carbonate (K 2 CO 3 ) into a single-necked flask, add 40ml dimethyl sulfoxide (DMSO), raise the temperature to 50°C, and stir for 3h to make it completely dissolved.

[0055] Step 1.2) Add 5.5ml of 1,4-butanediol diacrylate to the above solution and react at 50°C for 6h until the solution becomes clear.

[0056] Step 1.3) After the reaction, put into 400ml deionized water for precipitation, extract with 150ml of n-hexane, remove the organic phase, extract with 80ml of dichloromethane, remove the water phase, dry over anhydrous magnesium sulfate, rotary evaporate, and dry to obtain Double bonded nucleobase monomer (BA-A).

[0057] Step 2) Preparation of biomimetic h...

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Abstract

The invention relates to a preparation method of bionic hydrophobic association conductive hydrogel with high resilience and high sensitivity. The bionic hydrophobic association conductive hydrogel is prepared from the following raw materials: BA-A, AM, ACG and the like. The preparation method comprises the following steps: 1) preparing a nucleic acid base monomer (BA-A); and 2) preparing the bionic hydrophobic association conductive hydrogel. The bionic hydrophobic association conductive hydrogel has the advantages that a hydrophobic association network structure of the bionic hydrophobic association conductive hydrogel contains hydrogen bond interaction of nucleic acid bases and interaction between macromolecular chains, and the bionic hydrophobic association conductive hydrogel has excellent mechanical properties and high resilience; wherein the oriented movement of ions in the system enables the system to have rapid stretching and compression strain responsiveness, and application of deformation, pressure sensing, voice recognition and the like can be achieved. The gel preparation method is excellent in performance and novel in design; besides, compared with traditional conductive hydrogel, the gel has the advantages of high resilience, high sensitivity, quick response and the like, and has potential application value in the fields of tissue engineering, medical electrodes, flexible electronic skin, intelligent sensors and the like.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, in particular to a method for preparing a bionic hydrophobic association conductive hydrogel with high resilience and high sensitivity. Background technique [0002] Hydrogel is a soft and wet material with a three-dimensional network structure formed by hydrophilic polymer chains embedded in the water environment, similar to human tissue, with adjustable physical and chemical properties, and is widely used in soft robots, flexible Research on electronic skin and smart sensors. However, traditional conductive gel materials often have problems such as obvious hysteresis, slow response speed, and low sensitivity in signal transmission in strain sensing, which cannot meet the application in the field of new wearable devices. [0003] The multiple hydrogen bond structure of nucleic acid bases in living organisms has rapid self-healing properties and bioadhesion, and is widely used to impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/58C08F220/60G01N3/08
CPCC08F220/56G01N3/08C08F220/58C08F220/60
Inventor 孙平川邸祥伍国琳
Owner NANKAI UNIV
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