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High-adhesiveness conducting self-healing hydrogel as well as preparation method and application thereof

A self-healing, hydrogel technology, applied in the direction of adhesive types, starch adhesives, ester copolymer adhesives, etc. It can easily control the conditions, strong adhesion and simple preparation method.

Active Publication Date: 2018-05-01
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the above adhesives are conductive and the adhesion is not sufficient for practical applications
[0005] In addition, the commonly used methods of preparing hydrogels all use chemical methods or thermally initiated free radical polymerization, which requires the addition of additional initiators and preparation under heating conditions, resulting in low purity, difficult product post-processing, and difficult preparation process. Disadvantages such as high energy consumption and difficult production process control

Method used

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  • High-adhesiveness conducting self-healing hydrogel as well as preparation method and application thereof
  • High-adhesiveness conducting self-healing hydrogel as well as preparation method and application thereof
  • High-adhesiveness conducting self-healing hydrogel as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1, preparation cationic monomer

[0041]

[0042] Add 250mL of acetone to a 500mL round bottom flask, add dimethylaminoethyl methacrylate (0.21mol) and n-bromobutane (0.28mol) to the system respectively, pump and change the gas 3 times, and replace the solution system with a nitrogen atmosphere , under full stirring, reflux at 50°C for 6 hours. Most of the acetone solvent was removed, and anhydrous ether was added to precipitate the product. After suction filtration, it was fully dried in an oven at 40°C to obtain a white powder product (N-(2-(methacrylic acid acyloxy)ethyl)- N,N-dimethylbutane-1-ammonium bromide, about 90% yield).

Embodiment 2

[0043] Embodiment 2, preparation graphene oxide dispersion liquid

[0044] 15 mg of graphene oxide was added to 5 mL of purified water, and after stirring for 30 minutes, the cell crusher was crushed for 2 hours to obtain a uniformly dispersed graphene oxide aqueous dispersion.

Embodiment 3

[0045] Embodiment 3, preparation self-healing hydrogel

[0046] Self-healing hydrogels (3GO-P(NaSS-co-MOBAB)-15kGy) were prepared by γ-ray irradiation technique. The details are as follows: 100 mg of soluble starch, 1 mol / L of sodium styrene sulfonate and 1 mol / L of (N-( 2-(methacrylic acid acyloxy)ethyl)-N,N-dimethylbutane-1-ammonium bromide, after mixing evenly, a black viscous solution is formed. After γ-ray irradiation, at the dose rate Under the conditions of 80Gy / min and an absorbed dose of 15kGy, the polymerization of the system was initiated to form a self-healing hydrogel (3GO-P(NaSS-co-MOBAB)-15kGy).

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Abstract

The invention discloses high-adhesiveness conducting self-healing hydrogel as well as a preparation method and application thereof. A gamma ray or electron beam initiation polymerization method is used; cationic monomers shown as a formula I and polymerizable hydrophilic anion monomers are polymerized in an inorganic filler aqueous dispersion dissolved with polysaccharides; the physical crosslinking self-healing hydrogel is obtained. The self-healing hydrogel has the excellent characteristics of high response and self healing capability; the repeated use can be realized; high ionic conductivity, good biocompatibility and high adhesiveness are realized; the adhesive force on a conducting copper sheet can reach 60.5MPa. The gamma ray or electron beam irradiation method is used, so that the preparation method is simpler; safety and environment protection are realized; the energy consumption is low; the preparation method is very suitable for industrial production. The high-adhesiveness conducting self-healing hydrogel related by the invention is hopeful to be used in the fields of electronic device bonding agents, medical device bonding agents, tissue repair and the like.

Description

technical field [0001] The invention relates to a self-healing hydrogel, in particular to a high-adhesive conductive self-healing hydrogel, its preparation method and its application in the adhesive field. Background technique [0002] The safety and durability of self-healing hydrogels have been widely improved due to the properties of healing, repairing damage and restoring their original properties. Among them, self-healing hydrogels designed and prepared based on reversible non-covalent bond interactions have been widely studied, mainly because of their excellent fast response and autonomous self-healing properties, that is, they can achieve rapid self-healing without any external stimulation. combine. [0003] However, the common hydrogels prepared based on reversible non-covalent interactions greatly limit their applications due to their poor mechanical properties and thermodynamic instability. To address this problem, one of the effective solutions is to dope inorga...

Claims

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Application Information

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IPC IPC(8): C08F212/14C08F220/34C08F220/06C08F2/46C08F2/54C08K3/04C08K3/34C09J125/18C09J133/14C09J103/02
CPCC08F2/46C08F2/54C08F212/14C08F220/06C08F220/34C08K3/04C08K3/346C09J103/02C09J125/18C09J133/14
Inventor 翟茂林王艺蒙彭静李久强
Owner PEKING UNIV
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