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High-strength and high-toughness hyperbranched polymer hydrogel and preparation method thereof

A hyperbranched polymer, high-strength and high-toughness technology, used in the field of biomedical materials to achieve the effects of good toughness, improved mechanical properties, and good long-term stability

Inactive Publication Date: 2020-04-14
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, for polymer hydrogels, it has been difficult to balance its strength and toughness, so it is necessary to develop a hydrogel with high strength and high toughness.

Method used

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  • High-strength and high-toughness hyperbranched polymer hydrogel and preparation method thereof
  • High-strength and high-toughness hyperbranched polymer hydrogel and preparation method thereof
  • High-strength and high-toughness hyperbranched polymer hydrogel and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0022] N-acryloyl glycinamide (NAGA) is dissolved in dimethyl sulfoxide according to the solid content of 10%, and then the initiator benzophenone (BP) is added to the above solution, and the consumption of the initiator is N-propylene 0.0% of the mass of acylglycinamide (NAGA), use inert gas (such as nitrogen, argon or helium) to remove oxygen in the reaction system, the mold is irradiated in a UV curing box for 60 minutes to ensure sufficient initiation of free radical polymerization, followed by Open the mold and take out the gel, soak it in deionized water for 36 hours to reach a swelling equilibrium, and replace the deionized water every 12 hours to obtain a high-strength and high-tough hyperbranched polymer hydrogel (HB-PNAGA).

Embodiment 2

[0024] N-acryloyl glycinamide (NAGA) is dissolved in tetrahydrofuran according to the solid content of 40%, and then the initiator benzophenone (BP) is added to the above solution, and the consumption of the initiator is N-acryloyl glycinamide. (NAGA) 3% of the mass, use inert gas (such as nitrogen, argon or helium) to remove oxygen in the reaction system, the mold is irradiated in a UV curing box for 20 minutes to ensure sufficient initiation of free radical polymerization, and then open the mold to take out the condensation The gel was soaked in deionized water for 72 hours to reach a swelling equilibrium, and the deionized water was replaced every 12 hours to obtain a high-strength and high-tough hyperbranched polymer hydrogel (HB-PNAGA).

Embodiment 3

[0026] N-acryloyl glycinamide (NAGA) was dissolved in N,N-dimethylformamide according to the solid content of 20%, and then the initiator benzophenone (BP) was added to the above solution, and the amount of the initiator was It is 1% of the mass of N-acryloyl glycinamide (NAGA), using inert gas (such as nitrogen, argon or helium) to remove oxygen in the reaction system, and the mold is irradiated in a UV curing box for 40 minutes to ensure sufficient initiation freedom Then, the mold was opened to take out the gel, soaked in deionized water for 48 hours to reach the swelling equilibrium, and the deionized water was replaced every 12 hours to obtain a high-strength and high-tough hyperbranched polymer hydrogel (HB-PNAGA).

[0027] from image 3 It can be seen that the characteristic hydrogen peaks of a, b, c, d, e, and f all exist, and the characteristic peaks (c+f) in the high-strength and high-tough hyperbranched polymer hydrogel (HB-PNAGA): e=1 :1, description-NH 2 Scale r...

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Abstract

The invention provides high-strength and high-toughness hyperbranched polymer hydrogel and a preparation method thereof. N-acryloylglycine amide (NAGA) is used as a monomer, carbon-carbon double bondson the monomer are initiated, free radical polymerization is performed to prepare the high-strength and high-toughness hyperbranched polymer hydrogel, molecules of the high-strength and high-toughness hyperbranched polymer hydrogel have carbon-carbon main chains, side chains of the high-strength and high-toughness hyperbranched polymer hydrogel are bisamide groups, and a hydrogen bond structure is formed between the bisamide groups. The hyperbranched polymer hydrogel has the beneficial effects that the hyperbranched polymer hydrogel has relatively high swelling property and excellent mechanical property, and the preparation method is simple and feasible.

Description

technical field [0001] The invention relates to the technical field of biomedical materials, in particular to a high-strength and high-toughness hyperbranched polymer hydrogel and a preparation method thereof. Background technique [0002] Hydrogel is a three-dimensional network structure with high water content formed by the physical combination of non-covalent bonds or cross-linking of covalent bonds, which has good biocompatibility and excellent mechanical properties. . These characteristics make hydrogels have broad application prospects in biomedicine, sensors, self-healing materials, water retention and drought resistance. [0003] High-strength and high-toughness hydrogels have similar structures and properties to biological tissues, and are widely used in tissue engineering, drug delivery, and wound dressings. They have broad application prospects and have become a research focus in recent years. Among them, for polymer hydrogels, it has been difficult to balance b...

Claims

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Application Information

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IPC IPC(8): C08F120/54C08F2/48C08J3/075
CPCC08F2/48C08F120/54C08J3/075
Inventor 刘文广李佳
Owner TIANJIN UNIV
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