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Novel high-strength microgel composite hydrogel

A composite hydrogel, high-strength technology, used in prosthesis, medical science, etc., can solve problems such as poor mechanical properties, limited practical application, loss of gel hydrophilicity, transparency or permeability, etc. The effect of water absorption and high mechanical strength

Active Publication Date: 2013-03-13
临沂市高新汽车租赁服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor mechanical properties of most traditional hydrogels, their practical applications in various fields are limited.
At present, although a series of methods can be used to improve the strength of the gel, such as increasing the crosslink density, fiber reinforcement, and forming a copolymer gel with monomers with better mechanical properties, these methods often lose gelatinous properties. Some properties such as hydrophilicity, transparency or permeability, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Prepare the raw materials according to the following proportions: 2-acrylamide-2-methylpropanesulfonic acid: acrylamide: N-methylolacrylamide: deionized water: lithium diatomaceous earth: ammonium persulfate: N, N, N ', N'-tetramethylethylenediamine:polyethylene glycol:initiator v-50=500:100:100:200:20:2:5:20:;

[0020] (2) Mix and stir deionized water, acrylamide and N-methylolacrylamide for 30 minutes, then add initiator v-50, continue to blow nitrogen, initiate polymerization for 1 hour, and then keep warm in a 60°C water bath for 2 hours to complete the polymerization;

[0021] (3) After adding 2-acrylamide-2-methylpropanesulfonic acid, potassium persulfate, N,N,N',N'-tetramethylethylenediamine and polyethylene glycol, stir for 2 hours under nitrogen gas, add Stir for 30 min after lithium algae, and place it under airtight conditions at 30° C. for 48 h to obtain a hydrogel.

[0022] The prepared hydrogel contained the following components: 2-acrylamide-2-methyl...

Embodiment 2

[0024] (4) Prepare raw materials according to the following proportions: 2-acrylamide-2-methylpropanesulfonic acid: acrylamide: N-methylolacrylamide: deionized water: nano-montmorillonite: ammonium persulfate: N, N, N', N'-tetramethylethylenediamine: polyethylene glycol: initiator v-50=800:150:120:300:40:3:6:30:2;

[0025] (5) Mix and stir deionized water, acrylamide and N-methylolacrylamide for 30 minutes, then add initiator v-50, continue to blow nitrogen to initiate polymerization for 1 hour, and then keep warm in a water bath at 60°C for 2 hours to complete the polymerization;

[0026] (6) After adding 2-acrylamide-2-methylpropanesulfonic acid, potassium persulfate, N,N,N',N'-tetramethylethylenediamine and polyethylene glycol, stir with nitrogen for 2h, add After the nano-montmorillonite was stirred for 30 minutes, it was placed under airtight conditions at 30° C. for 48 hours to obtain a hydrogel.

[0027] The prepared hydrogel contained the following components: 2-acryl...

Embodiment 3

[0029] (7) Prepare raw materials according to the following proportions: 2-acrylamide-2-methylpropanesulfonic acid: acrylamide: N-methylolacrylamide: deionized water: nano-montmorillonite: ammonium persulfate: N, N, N', N'-tetramethylethylenediamine: polyethylene glycol: initiator v-50=1000: 200: 200: 400: 60: 5: 10: 40: 2;

[0030] (8) Mix and stir deionized water, acrylamide and N-methylolacrylamide for 30 minutes, then add initiator v-50, continue to blow nitrogen, initiate polymerization for 1 hour, and then keep warm in a 60°C water bath for 2 hours to complete the polymerization;

[0031] (9) After adding 2-acrylamide-2-methylpropanesulfonic acid, potassium persulfate, N,N,N',N'-tetramethylethylenediamine and polyethylene glycol, stir for 2 hours under nitrogen gas, add After the nano-montmorillonite was stirred for 30 minutes, it was placed under airtight conditions at 30° C. for 48 hours to obtain a hydrogel.

[0032] The prepared hydrogel contains the following compo...

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PUM

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Abstract

The invention discloses a novel high-strength microgel composite hydrogel which comprises the following components in percentage by weight: 30-70% of 2-acrylamido-2-methylpropanesulfonic acid, 5-20% of acrylamide, 5-10% of N-hydroxymethyl acrylamide, 10-50% of water and 2-5% of nano clay. The composite hydrogel has the advantages of higher mechanical strength and high water absorptivity; the strength and water content of the composite hydrogel are similar to those of the human body cartilaginous tissue; and thus, the composite hydrogel is a replaceable material for cartilaginous tissue repair.

Description

technical field [0001] The invention relates to a hydrogel, in particular to a high-strength composite novel hydrogel. Background technique [0002] Gels (gels) refer to polymers with a three-dimensional network structure and their swelling bodies that are insoluble in any solvent. They are soft and moist and look like solid materials, but they can deform with changes in the environment. [0003] This is very different from dry hard materials such as traditional steel and plastic. Gels can be divided into three types according to the solvent contained [0004] Classes: Hydrogels with water as solvent, lipogels with non-aqueous organic substances as solvent, and aerogels. Among them, hydrogels are the most common. [0005] Hydrogel is a three-dimensional network polymer formed by cross-linking linear polymer chains, which can swell in water and retain a large amount of water without dissolving. Because the molecular structure contains a large number of hydrophilic groups,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/10C08F220/58C08F220/56C08L51/00C08K3/34C08J3/24C08J3/075A61L27/16A61L27/02A61L27/52
Inventor 高润宝
Owner 临沂市高新汽车租赁服务有限公司
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