Preparation method of double-decker viscose hydrogel

A double-layer structure, hydrogel technology, applied in the field of polymer hydrogel, can solve the problem that hydrogel cannot have excellent viscosity and toughness at the same time, and achieve the effects of good strength and toughness, simple preparation method and easy operation.

Inactive Publication Date: 2017-09-08
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the hydrogel cannot have excellent viscosity and toughness at the same time, the purpose of the present invention is to form a second layer of viscous hydrogel on the surface of the tough hydrogel under the condition that the tough hydrogel is used as the base plate. Glue, strong hydrogel and viscous hydrogel rely on the interpenetration and entanglement of polymer chains to form a good link

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] a. Preparation of tough hydrogel

[0017] Add 0.2g sodium chloride (NaCl) and 0.5g surfactant sodium dodecyl sulfate (SDS) into 10mL deionized water, stir at room temperature until completely dissolved; then add 0.1mL hydrophobic group hexadecyl methacrylate , and continue to stir until the solution is clear and transparent; then add 2g of hydrophilic monomer acrylamide and 0.02g of initiator potassium persulfate, and stir until the solution is clear and transparent, and the mass concentrations of the above substances in the solution are 20g / L, 50g / L, 10g / L, 200g / L, 2g / L. Finally, pour the prepared solution into a reaction mold with a size of 100mm×20mm×3mm, and place the reaction mold in an oven at 65°C for 7 hours to obtain a tough hydrogel; sodium chloride: surfactant twelve The mass ratio of sodium alkyl sulfate: hydrophobic group hexadecyl methacrylate: hydrophilic monomer acrylamide: photoinitiator 2959 is 0.2:0.5:0.1:2:0.02.

[0018] b. Modification of bases ...

Embodiment 2

[0026] a. Preparation of tough hydrogel

[0027]Add 0.3g of sodium chloride (NaCl) and 0.7g of surfactant sodium dodecyl sulfate (SDS) into 10mL of deionized water, stir at room temperature until completely dissolved; then add 0.3mL of hexadecyl methacrylate, a hydrophobic group , and continue to stir until the solution is clear and transparent; then add 2g of monomeric acrylamide and 0.02g of initiator potassium persulfate, and stir until the solution is clear and transparent, and the mass concentrations of the above substances in the solution are 30g / L, 70g / L, 30g / L, 200g / L, 2g / L. Finally, pour the prepared solution into a reaction mold with a size of 100mm×20mm×3mm, and place the reaction mold in an oven at 70°C for 6 hours to obtain a tough hydrogel; sodium chloride: surfactant twelve The mass ratio of sodium alkyl sulfate: hydrophobic group hexadecyl methacrylate: hydrophilic monomer acrylamide: photoinitiator 2959 is 0.3:0.7:0.3:2:0.02.

[0028] b. Modification of base...

Embodiment 3

[0034] a. Preparation of tough hydrogel

[0035] Add 0.4g sodium chloride (NaCl) and 1.0g surfactant sodium dodecyl sulfate (SDS) to 10mL deionized water, stir at room temperature until completely dissolved; then add 0.5mL hydrophobic group hexadecyl methacrylate , and continue to stir until the solution is clear and transparent; then add 2g of hydrophilic monomer acrylamide and 0.02g of initiator potassium persulfate, and stir until the solution is clear and transparent, and the mass concentrations of the above substances in the solution are 40g / L and 100g respectively / L, 50g / L, 200g / L, 2g / L. Finally, pour the prepared solution into a reaction mold with a size of 100mm×20mm×3mm, and place the reaction mold in an oven at 75°C for 5 hours to obtain a tough hydrogel; sodium chloride: surfactant twelve The mass ratio of sodium alkyl sulfate: hydrophobic group hexadecyl methacrylate: hydrophilic monomer acrylamide: photoinitiator 2959 is 0.4:1:0.5:2:0.02.

[0036] b. Modificati...

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Abstract

The invention discloses a preparation method of a double-decker viscose hydrogel. The preparation method includes the steps of 1), preparing tough-type hydrophobic association hydrogel; 2), placing a viscose hydrogel precursor solution on the surface of the tough-type hydrogel well prepared, directly performing ultraviolet radiation on the surface of the hydrogel to trigger a monomer to perform in-situ polymerization on the surface of the tough-type hydrogel to form the second-layer to prepare the double-decker viscose hydrogel finally. The tough-type hydrogen and the viscose hydrogel form a good chain by relying on crossing and winding action of a polymer chain, and viscosity and toughness of the hydrogel are realized; the application range of the tough-type hydrogel and the viscose hydrogel is expanded, and the difficulty that good viscosity and toughness of the hydrogel cannot be achieved simultaneously is broken through. The preparation method is simple, easy to operation and applicable to perfect combination of the most tough-type hydrogels and viscose hydrogels, and certain universality is achieved.

Description

technical field [0001] The invention belongs to the technical field of polymer hydrogel, and relates to a preparation method of a double-layer structure viscous and tough hydrogel. Background technique [0002] Because hydrogel contains a lot of water and has a perfect three-dimensional network structure, it is endowed with the characteristics of "soft matter". This structure is similar to biological tissue. Hydrogel is used in tissue engineering, medical dressings and drug controlled release, etc. This field has great research significance and development prospects. The toughness and viscosity of hydrogels have been the important properties that people have been pursuing, and these two properties are of great significance for practical applications. Tough hydrogels are widely used in tendons, artificial muscles, artificial organs, and hydrogel scaffolds due to their excellent stretchability and fatigue resistance. However, due to the high cohesion of the strong hydrogel, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08F220/56C08F265/10C08F220/60C08F220/22C08F2/48
CPCC08F2/48C08F220/56C08F265/10C08J3/075C08J2351/00C08F220/22C08F220/60
Inventor 高光辉刘鑫张钦许健宇
Owner CHANGCHUN UNIV OF TECH
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