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High-transparency, adhesive and self-healing hydrogel film and preparation method thereof

A polymer hydrogel and film technology, applied in the field of materials, can solve the problems of self-healing, mechanical strength and other comprehensive properties and structures that cannot be improved together, and achieve simple and easy preparation methods, mild reaction conditions, and excellent mechanical properties Effect

Active Publication Date: 2022-04-26
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the shortcomings that the self-healing, mechanical strength and other comprehensive properties and structures of polymer hydrogels cannot be improved together, and provide A kind of highly transparent, adhesive, self-healing hydrogel film and its preparation method
[0008] In view of the problem that the self-healing, mechanical strength and other comprehensive properties and structures of the endogenous healing mechanism mentioned in the background technology cannot be improved together, the research team of the present invention Provide a self-healing hydrogel based on quadruple hydrogen bond, anion-cation interaction and chain entanglement and its preparation method

Method used

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  • High-transparency, adhesive and self-healing hydrogel film and preparation method thereof
  • High-transparency, adhesive and self-healing hydrogel film and preparation method thereof
  • High-transparency, adhesive and self-healing hydrogel film and preparation method thereof

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Embodiment 1

[0050] Following the above-mentioned technical solution, this embodiment provides a method for preparing a highly transparent, adhesive, and self-healing hydrogel film, which includes the following steps:

[0051] 1) 1126.17 mg of 2-amino-4-hydroxy-6-methylpyrimidine (2-Amino-4-hydroxy-6-methylpyrimidine, UPy) and 27 mL of dimethyl sulfoxide (Dimethyl sulfoxide, DMSO) were placed in In a 100mL eggplant-shaped bottle, stir in an oil bath at 100°C until completely dissolved, take it out, and return to room temperature. Place 1656 μL of 2-Isocyanatoethyl methacrylate (2-Isocyanatoethyl methacrylate) and 1170 μL of dimethyl sulfoxide (DMSO) in a 20 mL sample bottle, shake until completely mixed, and drop them into eggplant-shaped In the bottle, stir and react at room temperature for 10 h, centrifuge at 7000 rpm for 10 min, absorb the supernatant liquid with a plastic dropper, disperse the bottom product in acetone and transfer it to a No. F 60 mL sand core funnel, and remove it by...

Embodiment 2

[0065] A method for preparing a highly transparent, adhesive, self-healing hydrogel film, comprising the following steps:

[0066] 1) 1126.17 mg of 2-amino-4-hydroxy-6-methylpyrimidine (2-Amino-4-hydroxy-6-methylpyrimidine, UPy) and 27 mL of dimethyl sulfoxide (Dimethyl sulfoxide, DMSO) were placed in In a 100mL eggplant-shaped bottle, stir in an oil bath at 100°C until completely dissolved, take it out, and return to room temperature. Place 1435 μL of 2-Isocyanatoethyl methacrylate (2-Isocyanatoethyl methacrylate) and 1170 μL of dimethyl sulfoxide (DMSO) in a 20 mL sample bottle, shake until completely mixed, and drop them into eggplant-shaped In the bottle, stir and react at room temperature for 8 hours, centrifuge at 7000rpm for 10 minutes, absorb the supernatant with a plastic dropper, disperse the bottom product in acetone and transfer it to a No. F 60mL sand core funnel, and remove it by suction filtration. For unreacted substances and by-products, place the sand core f...

Embodiment 3

[0070] A method for preparing a highly transparent, adhesive, self-healing hydrogel film, comprising the following steps:

[0071] 1) 1126.17 mg of 2-amino-4-hydroxy-6-methylpyrimidine (2-Amino-4-hydroxy-6-methylpyrimidine, UPy) and 27 mL of dimethyl sulfoxide (Dimethyl sulfoxide, DMSO) were placed in In a 100mL eggplant-shaped bottle, stir in an oil bath at 100°C until completely dissolved, take it out, and return to room temperature. Place 1104 μL of 2-Isocyanatoethyl methacrylate (2-Isocyanatoethyl methacrylate) and 1170 μL of dimethyl sulfoxide (DMSO) in a 20 mL sample bottle, shake until completely mixed, and drop them into eggplant-shaped In the bottle, stir and react at room temperature for 5 h, centrifuge at 7000 rpm for 10 min, absorb the supernatant with a plastic dropper, disperse the bottom product in acetone and transfer it to a No. F 60 mL sand core funnel, and remove it by suction filtration. For unreacted substances and by-products, place the sand core funnel ...

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Abstract

The invention provides a high-transparency, adhesive and self-healing hydrogel film and a preparation method thereof. Wherein the addition of the 4-dihydropyrimidine-2-ylureido ethyl methacrylate (UPyMA) monomer endows the hydrogel with good adhesion performance, the hydrogel can be adhered to the surfaces of various substrate substances including glass, metal, animal tissues, plastics and the like, and meanwhile, due to the existence of a quadruple hydrogen bond structure in the UPyMA monomer, the hydrogel has good self-healing ability. An acrylic acid (AA) monomer and a dimethylaminoethyl acrylate (DMAEA) monomer can be respectively used as an anionic monomer and a cationic monomer to form an ionic crosslinking dynamic network through the interaction of anions and cations. In addition, the methoxy polyethylene glycol acrylate (PEGA) monomer can also provide a macromolecular chain entanglement network, so that the structural stability of the hydrogel is further improved.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a highly transparent, adhesive, self-healing hydrogel film and a preparation method thereof. Background technique [0002] Hydrogel refers to a solid or semi-solid material formed by chemical or physical cross-linking to form a three-dimensional network polymer structure, which can maintain a high water content through polymer swelling, soft texture, and its mechanical properties are similar to those of biological body tissues. Similar, and has good biocompatibility, it has a wide range of application prospects in the field of biomedicine, such as tissue adhesives, drug controlled release systems, wound dressings and wearable biosensors. However, most traditional polymer hydrogels have weak mechanical strength and insufficient toughness due to their high water content, and are easily damaged by external forces, liquids or chemical substances, thus affecting their st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/28C08F220/34C08F220/36C08L33/02C08J3/075C08J5/18
CPCC08J3/075C08J5/18C08F220/06C08J2333/02C08F220/286C08F220/34C08F220/36
Inventor 王腾蛟王雷周倩朱致君王坤李鹏黄维
Owner NORTHWESTERN POLYTECHNICAL UNIV