Preparation method of hydrogel with high self-repairing capacity and high electric conductivity

A technology of self-healing and conductivity, applied in the field of hydrogel, can solve the problems of long time-consuming polymerization method, etc., and achieve the effect of excellent mechanical properties, high ionic conductivity, and strong self-healing ability

Active Publication Date: 2017-05-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the patent document does not characterize its mechanical properties, and the polymerization method used takes a long time

Method used

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  • Preparation method of hydrogel with high self-repairing capacity and high electric conductivity
  • Preparation method of hydrogel with high self-repairing capacity and high electric conductivity
  • Preparation method of hydrogel with high self-repairing capacity and high electric conductivity

Examples

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Effect test

Embodiment 1

[0036] A method for preparing a hydrogel with strong self-repair ability and high conductivity, comprising the following steps:

[0037] (1) Synthesis of 3‐(4‐vinyl‐1‐pyridine)propanesulfonate (ZIW)

[0038] Dissolve 6.31g of 4-vinylpyridine in an appropriate amount of acetone solution, then dissolve 7.33g of 1,3-propane sultone in an appropriate amount of acetone and slowly add it dropwise to 4-ethylene at 0°C under nitrogen protection base pyridine in acetone solution; after the dropwise addition, stirred and reacted at 25°C for 5 days; after the reaction was complete, filtered, and the filter cake was washed 3 times with acetone; then vacuum-dried to obtain 3‐(4‐vinyl‐1‐pyridine ) propanesulfonate. The 3‐(4‐vinyl‐1‐pyridine)propanesulfonate (ZIW) is a white solid belonging to an amphoteric salt, with 1HNMR (400M, D 2 O) for purity characterization.

[0039] (2) Synthesis of hydrogel

[0040]Dissolve 0.45g 3‐(4‐vinyl‐1‐pyridine)propanesulfonate (ZIW) and 0.41g sodium p-s...

Embodiment 2

[0042] A method for preparing a hydrogel with strong self-repair ability and high conductivity, comprising the following steps:

[0043] Same as (1) in Example 1,

[0044] (2) Synthesis of hydrogel

[0045] Dissolve 0.45g 3‐(4‐vinyl‐1‐pyridine)propanesulfonate (ZIW) and 0.41g 2‐acrylamide‐2‐methylpropanesulfonic acid (AMPS) in 0.5mL water, then add 0.0031g crosslinker Agent N,N‐methylenebisacrylamide (MBAA) and 0.017g photoinitiator 1173 were used to initiate polymerization under 365nm wavelength ultraviolet light irradiation for 1h to obtain a hydrogel. The hydrogel is a polyionic liquid hydrogel.

Embodiment 3

[0047] A method for preparing a hydrogel with strong self-repair ability and high conductivity, comprising the following steps:

[0048] Same as (1) in Example 1,

[0049] (2) Synthesis of hydrogel

[0050] Dissolve 0.45g of 3‐(4‐vinyl‐1‐pyridine)propanesulfonate (ZIW) and 0.14g of acrylic acid (AAC) in 0.5mL of water, then add 0.0031g of crosslinker N,N‐methylenebispropene Amide (MBAA) and 0.012g photoinitiator 1173 were irradiated with 365nm wavelength ultraviolet light to initiate polymerization for 1h to obtain a hydrogel. The hydrogel is a polyionic liquid hydrogel.

[0051] Example 4-6

[0052] The preparation method of the hydrogel with strong self-healing ability and high conductivity as shown in Example 1, the difference is:

[0053] In step (2), the addition amount of cross-linking agent N, N-methylenebisacrylamide (MBAA) is 0.0015g, 0.0046g, 0.0062g (that is, the addition amount of cross-linking agent is 3-(4-vinyl 0.5mol%, 1.5mol%, 2mol% of ‐1‐pyridine) propan...

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Abstract

The invention relates to a preparation method of hydrogel with high self-repairing capacity and high electric conductivity. The method comprises steps as follows: (1) 4-vinylpyridine is dissolved in an acetone solution, and then 1,3-propane sultone is dissolved in acetone and slowly dropwise added to the acetone solution of 4-vinylpyridine at 0-30 DEG C under the protection of nitrogen; the mixture is subjected to a stirring reaction for 3-5 d after addition; after the complete reaction, filtration is performed, a filter cake is washed with acetone; 3-(4-vinyl-1-pyridine)allyl sulfonate is obtained after vacuum drying; (2) 3-(4-vinyl-1-pyridine)allylsulfonate, sodium p-styrenesulfonate and 2-acrylamide-2-methyl allyl sulfonate or acrylic acid are dissolved in water, then a crosslinking agent and a photoinitiator are added, polymerization is initiated under ultraviolet irradiation, and hydrogel is prepared. The polyion liquid gel shows excellent electrochemical performance, has ion electric conductivity as high as 1.53 Sm<-1> at the room temperature and has excellent mechanical properties, and the electrochemical performance can be kept stable under different deformation conditions.

Description

technical field [0001] The invention relates to a hydrogel, in particular to a preparation method of a hydrogel with strong self-repair ability and high conductivity. Background technique [0002] In recent years, elastic electronic devices have attracted extensive attention due to their broad application prospects and excellent performance, such as wearable electronic devices, smart mobile devices, and implantable biosensors. Compared with traditional electronic devices, elastic electronic devices have the advantages of being portable, light, bendable, wearable and even implantable. As an important part of elastic electronic devices, the demand for high-performance elastic energy storage and conversion devices is also increasing, and related research has made some progress, including supercapacitors, lithium-ion batteries, solar cells, and fuel cells. In practical applications, each component of these elastic energy storage and conversion devices must have mechanical stabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F226/06C08F212/14C08F222/38C08F220/58C08F220/06C08F2/48
CPCC08F2/48C08F226/06C08F220/585C08F222/385C08F212/14
Inventor 郑利强乔宣宣周涛孙娜高新培
Owner SHANDONG UNIV
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