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Shape memory anti-tear hydrogel with carbon dioxide responsibility, as well as preparation method and application of shape memory anti-tear hydrogel

A carbon dioxide, responsive technology, applied in the field of hydrogel and preparation, can solve the problems of low water content of gel and difficult entry of water molecules, and achieves simple preparation method, easy long-term storage and long-distance transportation, and strong tensile strength. and the effect of compression resistance

Active Publication Date: 2015-08-26
鑫通家空间(天津)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, strong hydrogen bonding makes it difficult for water molecules to enter the cross-linked pure poly 2-vinyl-4,6-diamino-1,3,5-triazine network, so the water content of the gel is extremely low

Method used

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  • Shape memory anti-tear hydrogel with carbon dioxide responsibility, as well as preparation method and application of shape memory anti-tear hydrogel
  • Shape memory anti-tear hydrogel with carbon dioxide responsibility, as well as preparation method and application of shape memory anti-tear hydrogel
  • Shape memory anti-tear hydrogel with carbon dioxide responsibility, as well as preparation method and application of shape memory anti-tear hydrogel

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Embodiment Construction

[0018] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0019] The monomer 2-vinyl-4,6-diamino-1,3,5-triazine (100 mg, Tokyo Kasei Kogyo), N,N-dimethylacrylamide (40 mg, about 40 μl, sigma), and The cross-linking agent polyethylene glycol diacrylate (14 mg, number average molecular weight 4000, sigma) was added to a 1.5ml centrifuge tube, and after dissolving the monomer and cross-linking agent with 611 μl of dimethyl sulfoxide (DMSO), add light Initiator Irgacure 2959 (4.6 mg, 1-[4-(2-hydroxyethoxy)-phenylene]-2-hydroxy-2',2'-dimethylethanone, sigma). The solvent containing monomer, cross-linking agent and initiator was injected into the airtight mold, and the mold was irradiated in an ultraviolet curing box (XL-1000UV, Spectronics Corporation) for 40min to fully initiate free radical polymerization. Then the mold was opened to take out the gel, rinsed several times with phosphate buffer solution, so...

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Abstract

The invention discloses a shape memory anti-tear hydrogel with carbon dioxide responsibility and a preparation method. The preparation method comprises the following steps: taking 2-vinyl-4,6-diamino-1,3,5-triazine and N,N-dimethyl acrylamide as monomers, taking polyethylene glycol acrylate as a cross-linking agent, and preparing the shape memory anti-tear hydrogel through copolymerization under an initiator, wherein the mass ratio of 2-vinyl-4,6-diamino-1,3,5-triazine to N,N-dimethyl acrylamide is (3:2)to(3:1). The hydrogel has strong stretch resistance, compression resistance, tearing resistance and notching resistance, meanwhile, the hydrogel has stimulative-responsibility on CO2, and has a shape memory function under the stimulation of CO2. The preparation method is simple, and the shape memory anti-tear hydrogel is easy to store for a long time and transport for a long distance.

Description

technical field [0001] The present invention relates to a kind of hydrogel and preparation method, more specifically, relate to a kind of 2-vinyl-4,6-diamino-1,3,5-triazine, N,N-dimethylacrylamide Copolymer (PVDT-co-PDMA) hydrogel and preparation method thereof, with high strength, tear resistance, CO 2 Responsiveness and shape memory function. Background technique [0002] Hydrogel is a polymer material with cross-linked structure, which is hydrophilic but water-insoluble and can absorb a large amount of water (usually the water content is greater than 50% of the total mass) with water as the dispersion medium. Environmentally sensitive hydrogels or smart hydrogels refer to the corresponding changes in volume and mechanical properties when subjected to changes in the external environment (such as pH, temperature, light, electricity, magnetic field, biomolecules, etc.). Smart hydrogels are widely developed as biomedical materials, soft wet actuators, and drug carriers. Ho...

Claims

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Application Information

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IPC IPC(8): C08F226/02C08F220/54C08F220/28C08F2/48
CPCC08F2/48C08F267/06C08F226/02
Inventor 刘文广许兵
Owner 鑫通家空间(天津)科技有限公司
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