Tear-resistant high-strength shape memory aquagel and preparation method thereof

A tear-resistant, high-strength technology, applied in the field of hydrogel and preparation, can solve the problems of reduced water content of gel and difficult entry of water molecules

CN104387538AInactive Publication Date: 2015-03-04TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-03-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a tear-resistant high-strength shape memory aquagel and a preparation method thereof. The tear-resistant high-strength shape memory aquagel is prepared by carrying out random copolymerization on acrylonitrile, acrylamide and 2-acrylamido-2-methylpropanesulfonic acid in the presence of a crosslinking agent and an initiator. The tear-resistant high-strength shape memory aquagel has the advantages of high stretching resistance, high resistance to compression, tear resistance and notch resistance, and has the shape memory function under the stimulation of body temperature. The preparation method is simple; and the product is easy for long-term storage and long-distance transportation.
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Description

technical field

[0001] The present invention relates to a kind of hydrogel and preparation method, relate to a kind of acrylonitrile, acrylamide and 2-acrylamide-2-methyl propanesulfonic acid copolymer (PAN-co-PAM-co-PAMPS ) hydrogel and a preparation method thereof, which have good tear resistance, high strength 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. Because of the physical crosslinking and chemical crosslinking between polymer chains, it will not dissolve in water, but can only swell and maintain a certain shape. At the same time, it also has good water permeability and biocompatibility. It can be used as a human implant Can reduce adverse reactions. Therefore, hydrogels have been widely used as excellent biomedica...

Examples

Embodiment Construction

[0016] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0017] Monomer acrylonitrile (120 mg, about 120 μl, Jieerzheng Company), acrylamide (70 mg, TCI), 2-acrylamide-2-methylpropanesulfonic acid (10 mg, sigma) and cross-linking agent polyethylene glycol Diacrylate (12.5mg, number average molecular weight 575, about 12.5μl, sigma) was added to a 1.5ml centrifuge tube, after dissolving the monomer and cross-linking agent with 787.5μl of dimethyl sulfoxide (DMSO), add photoinitiated Irgacure 2959 (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 a UV curing box (XL-1000UV, Spectronics Corporation) for 20min to fully initiate free radical polymerization. Then the mold was opened to take out the gel, rinsed several times with deionized water...